PLC Shift Release Notes

November 15, 2025

PLC Shift Manager version 2.27
- Add Gas Flow v1.15 and Liquid Flow v1.8.
PLC Shift core app runtime version 2.27
- Add Gas Flow v1.15 and Liquid Flow v1.8.
- Fix a bug where if the OPC-UA PLC driver is connected and the Node ID is changed, the configuration change doesn't get picked up in the driver until the driver enable is changed or a disconnect occurs.
Gas Flow config version 1.15, app version 1.0
- Add status values to show the actual input values to the flow computer regardless of where the input values come from.
Liquid Flow config version 1.8, app version 1.0
- Add status values to show the actual input values to the flow computer regardless of where the input values come from.

November 11, 2025

PLC Shift Manager version 2.26
- Add units to the Modbus server export.
- In the core log, log the free disk space, used disk space and percentage disk used every hour.
- Improve error handling in the web app. Handle some unexpected occurences in a better way.
- Target net 8.0.21 instead of net 6, which is obsolete. For installations where the computer has internet access, the installer will download and install net 8 automatically if it's not already installed. For offline installations, net 8.0.21 x64 can be found here.
- Update NetMQ library to version 4.0.2.2. This library is used for communications when online with a runtime.
- Add Gas Flow v1.14.
PLC Shift core app runtime version 2.26
- Improve logging in the IO task. Slow down logging in some cases so that log files don't get flooded.
- In the IO task, when the protocol is Modbus TCP in RTU or Modbus TCP, try to connect every 60 seconds instead of once per second.
- Update NetMQ library to version 4.0.2.2. This library is used for communications when online with PLC Shift Manager.
- Add Gas Flow v1.14.
Gas Flow config version 1.14, app version 1.0
- When polling a sensor directly, allow the user to select what happens when a sensor reports a bad reading. This is useful in the case where it's known that sensors can temporarily enter an overrange condition, like on a plunger arrival.

October 29, 2025

PLC Shift Manager version 2.25
- Add Plunger Lift v1.11.
PLC Shift core app runtime version 2.25
- Update all PLC drivers (Modbus, EtherNET/IP, OPC-UA and SCADAPack 47xi) to prevent floating point NaN (not a number) and INF (positive or negative infinity) values from being passed to apps.
- Update IO driver, which polls devices like MVS sensors or Coriolis meters, to prevent floating point NaN and INF values from being passed to apps.
- Add Plunger Lift v1.11.
- Add Gas Flow v1.13 app version 1.2.
- Add Liquid Flow v1.7 app version 1.2.
Plunger Lift config version 1.11, app version 1.0
- Add arrival history tags. These new tags will be reset daily at local time midnight and are also persistent across app restarts.
- Add arrival history table. This table holds daily arrival history. A new record will be created a midnight local time every day.
Gas Flow config version 1.13, app version 1.2
- Add checks to set inputs to invalid if floating point values are NaN or INF.
- Improve the way that turbine inputs are handled when determining the counts per minute, hour, day and batch.
- Improve the calculation for batch elapsed time.
Liquid Flow config version 1.7, app version 1.2
- Add checks to set inputs to invalid if floating point values are NaN or INF.
- Improve the way that turbine inputs are handled when determining the counts per minute, hour, day and batch.
- Improve the calculation for batch elapsed time.

October 21, 2025

PLC Shift Manager version 2.24
- Add additional validation for Data Logger apps. The 'Sync with PLC' option must be checked when a tag name is not empty, regardless of whether the value is enabled.
PLC Shift core app runtime version 2.24
- With Logix PLCs at version 20.019 when reading the tag structure from the PLC tag names can sometimes be truncated or otherwise corrupted. The EIP driver can now handle more cases where the tag names are not correct.

October 16, 2025

PLC Shift Manager version 2.22
- Add Well Test v1.2.
PLC Shift core app runtime version 2.22
- Add Well Test v1.2.
Well Test config version 1.2, app version 1.0
- Add 'End Purge' command to allow a user to immediately end purge and move to the next state.
Liquid Flow config version 1.7, app version 1.1, config version 1.6, app version 1.2
- Fix a bug where accumulated values in table history were sometimes incorrect.

October 15, 2025

PLC Shift Manager version 2.21
- Add additional error handling when loading log files. Corrupt log files are now loaded with missing lines instead of not being loaded at all.
PLC Shift core app runtime version 2.21
- Allow multiple connections to the PLC when the PLC communications protocol is Modbus TCP. One connection will be created for each eight apps. Using multiple connections makes polling faster.
Well Test config version 1.1, app version 1.2
- Fix a bug where the 'Asset ID' status tag in the 'Current Test' group wasn't populated correctly.
- Set the asset ID on flow runs correctly during configuration. This sometimes did not get set correctly.
- Do not allow the 'Well On Test Input' control parameter value to change when in manual mode when a test is underway.

October 9, 2025

PLC Shift Manager version 2.20
- Add Well Test v1.1.
PLC Shift core app runtime version 2.20
- Add Well Test v1.1.
Well Test config version 1.1, app version 1.0
- Add Asset ID parameter to current test group and test history groups.

October 2, 2025

PLC Shift Manager version 2.18
- Fix a bug with Remote Connect export where user defined tags that contain a uint32 value were exported as uint16 values.
- Add a GUI to automate changing Modbus PLC Settings for all apps on a device. This can be found under the new 'Device' menu at the top of the PLC Shift Manager window.
PLC Shift core app runtime version 2.18
- Fix a bug with the SP47xi driver where updates would sometimes not be sent to internal tag database.
Gas Flow config version 1.13, app version 1.1
- Add additional checks when converting some double values to uint32 values.

September 30, 2025

PLC Shift Manager version 2.17
- Fix an issue with the license request feature.
- Add Well Test v1.0.
PLC Shift core app runtime version 2.17
- Update systemd unit files with a startup timeout of 180 seconds. This will prevent the runtime from being killed when starting on slow hardware.
- Add Well Test v1.0.
Well Test config version 1.0, app version 1.0
- Initial production release.
- Fix bugs when a flow run does not exist or is at the wrong version.
- Improve diagnostic logging when a flow run does not exist.

September 23, 2025

PLC Shift Manager version 2.16
- Add Well Test v0.1, Liquid Flow v1.7 and Gas Flow 1.13.
- Mark the following app versions are obsolete. These app versions will be removed in a future release and users should migrate off them soon.
PLC Shift core app runtime version 2.16
- Add Well Test v0.1, Liquid Flow v1.7 and Gas Flow 1.13.
- Internal changes to support Well Test v0.1.
- Remove the following plug ins from the deployment budles. If you are using app runtimes at this version do not upgrade the runtime system.
Well Test config version 0.1, app version 1.0
- Beta release for this application. Use this for bench testing, but breaking changes might be introduced in a version 1.0 release.
Gas Flow config version 1.13, app version 1.0
- Add some purely internal changes to support Well Test v0.1. There are no external changes compared to v1.12.
Liquid Flow config version 1.7, app version 1.0
- Disable the Modbus Server setting on some string values. These should not have been allowed.
- Add some purely internal changes to support Well Test v0.1

September 17, 2025

PLC Shift Manager version 2.15
- Add Gas Lift v1.6.
PLC Shift core app runtime version 2.15
- Add Gas Lift v1.6.
Gas Flow config version 1.12, app version 1.1
- Fix an issue where table values for accumulated volumes were off by exactly a factor of 1000 due to a units conversion issue.
- When directly polling a 3095, 4102 or 4088 MVS it's possible that the DP low range would not be read correctly. If an alarm occured, an NaN value could be entered into an alarm record, and this would prevent export to MS SQL Server.
Liquid Flow config version 1.6, app version 1.1
- Allow the live denisty to be below the configured base denisty oil or above the configured base density water. The calculated water cut will no longer error out when this occurs, and the water cut will be clipped to 0% water or 100% water.
Gas Lift config version 1.5, app version 1.1
- When control is disabled, set the injection PID output to zero scale and indicate that the injection valve should be closed. This would sometimes go to the previously input manual override value.
- When using variable injection mode, when the manual override state was enabled, if the injection flow rate was zero then the injection PID output would go to zero scale and the injection valve would be closed. The injection PID output now goes to the user's manual override value.
- When in automated modes, write the actual PID output to the 'Injection Valve Override Position' control parameter. When manual mode is enagaged, the manual position will reflect the current PID output instead of jumping to the value in the override parameter. Note that this means that the override parameter cannot be written to by the user until manual override is enabled, because whatever value that the user writes will be clobbered by the output from the app. The override position can only be written once override is actually enabled.
- Write defaults values of user defined output tags on app startup. This prevents issues with the OPC-UA driver.
Gas Lift config version 1.6, app version 1.0
- Contains the fixes in Gas Lift v1.5, v1.1.
- Add additional status parameters that are useful when using the variable injection mode. Add the well flow averaged value, the critical flow averaged value, and the critical flow averaged value times the critical flow multiplier. This last value is the setpoint to the injection PID.

August 22, 2025

PLC Shift Manager version 2.14
- Fix a bug where device level server settings in PLC Shift Manager were not always updated when uploading from a remote device.
PLC Shift core app runtime version 2.14
- No changes.

July 25, 2025

PLC Shift Manager version 2.13
- Fix deployment on Xeta. When adding Opto 22 version 4.x, a bug was introduced that prevented deployment on Xeta.
PLC Shift core app runtime version 2.13
- No changes.

July 22, 2025

PLC Shift Manager version 2.12
- Fix an issue with the bulk edit feature where not all tags for an app would appear in the exported file.
- Add a deployment option for Opto 22 groov EPIC PR1/PR2 and RIO controllers that have version 4.0.1 firmware or newer. This fimrware was released by Opto 22 in June 2025 and includes a newer Linux kernal as well as various other improvements that mean that we can now run the latest version of PLC Shift without issues.
PLC Shift core app runtime version 2.12
- No changes.

July 17, 2025

PLC Shift Manager version 2.11
- Add Data Logger v1.4.
PLC Shift core app runtime version 2.11
- Update Modbus server to support writes to user defined output tags.
Data Logger config version 1.4, app version 1.0
- Update all user defined tags in all output groups to allow the 'Modbus Server' option on the tag to be selected. This allows the value to be updated in the PLC via PLC Shift's Modbus server.

July 15, 2025

PLC Shift Manager version 2.10
- Add ClickHouse export settings. Table creation scripts are only supplied for Data Logger v1.3 in this release.
PLC Shift core app runtime version 2.10
- Fix a bug with the new OPC-UA library where writes would sometimes fail.
- Add tabular data export to ClickHouse.

July 7, 2025

PLC Shift Manager version 2.9
- Add Gas Flow v1.12
- Add Bulk Edit feature. This allows an app configuration to be exported to MS Excel, modified in Excel, and then be loaded into PLC Shift Manager. This allows users to make many changes quickly.
PLC Shift core app runtime version 2.9
- Update the OPC-UA PLC driver to use a different library. This reduces latency spikes when reading and writing to a PLC when using the OPC-UA protocol.
- The Modbus server will no longer respond with an exception code when the station ID does not exists. It will now not respond.
Gas Flow config version 1.12, app version 1.0
- Add configurable turbine rollover.

June 18, 2025

PLC Shift Manager version 2.6
- Remove configuration parameters for gRPC interface configuration and switch to a JSON configuration blob.
PLC Shift core app runtime version 2.6
- Enable plunger cycle history tables to be exported.
- Allow the gRPC interface to be secured using an API key or Microsoft Azure Entra Single Sign On (SSO).
- Add a RESTful API to the gRPC interface. This allows the interface to be accessed using REST semantics and with a human readable JSON payload.

June 4, 2025

PLC Shift Manager version 2.5
- No changes.
PLC Shift core app runtime version 2.5
- Fix a bug with the EIP driver where an index out of range exception would be thrown during the initial tag read when the controller has no tags.
- In some cases, when using a normal forward open, write packets would be too large and cause the PLC to ignore the write. This is fixed and write payloads were made smaller to account for the overhead with UDT write requests.

May 21, 2025

PLC Shift Manager version 2.4
- Fix a bug where Modbus server exports could not be generated for the latest app versions.
PLC Shift core app runtime version 2.4
- No changes.

May 19, 2025

PLC Shift Manager version 2.3
- No changes.
PLC Shift core app runtime version 2.3
- The EtherNET/IP driver will try a normal forward open if a large forward open fails. When using a system that only supports normal forward open, any UDT can only contain around 50 tags due to the smaller packet size. See the PLC Shift Reference Manual for details.
Plunger Lift config version 1.10, app version 1.1
- Improve how cycle stats are generated when advance commands are issued by the user.
- Fix a bug where if an 'Advance to After Plunger Arrival' command was issued in a cycle after the plunger had already arrived the arrival information wouldn't be cleared and the app would immediately exit the 'Waiting for Plunger Arrival' state. The program will now correctly wait for plunger arrival.

May 15, 2025

PLC Shift Manager version 2.1
- Add Gas Flow v1.11.
- Add Liquid Flow v1.6
PLC Shift core app runtime version 2.1
- Improve how parameters are displayed in the web app. Parameters will now appear in the same order as PLC Shift Manager.
Data Logger config version 1.3, app version 1.1
- Fix a bug with how the default values for output tags are written. Previously, a value was only written if the 'gRPC Write' option on the parameter was enabled. The value is now written if it's enabled without checking for the 'gRPC Write' option.
Gas Flow config version 1.11, app version 1.0
- Add support for direct polling of Oleumtech HMVS multivariable sensors.
Liquid Flow config version 1.6, app version 1.0
- Allow the 'Modbus Server', 'gRPC Read' and 'gRPC Write' options to be selected on some parameters.

May 13, 2025

This is a major release. We reccommend taking a copy of your database file and also exporting all configurations before updating so that you have a backup. PLC Shift Manager will transparently apply migrations to some application and device configurations.

PLC Shift Manager version 2.0
- Add gRPC interface configuration settings.
- Add HMI (web app) configuration settings.
- Remove Opto 22 EPIC and RIO as deployment options. This is temporary until we validate .net 8 on Opto 22.
- When migrating an app to a new version, the 'Logging Level', 'Disable Modbus Server' and 'Modbus Server Unit ID' parameters in an app's 'Overall Settings' group may not be migrated correctly and will be set to the default value in the new version. When this happens, if the 'Sync PLC Option' is unchecked for the 'Logging Level' parameter, it may become checked in the migrated app, because this is the default setting.
PLC Shift core app runtime version 2.0
- Add gRPC interface.
- Add HMI (web app).
- Remove net 5 and net 6 builds. Only net 8 is supported.
- Increase the timeout on OPC-UA reads.
Plunger Lift config version 1.10, app version 1.0
- Add gRPC support.
Gas Flow config version 1.10, app version 1.0
- Add gRPC support.
Gas Lift config version 1.5, app version 1.0
- Add gRPC support.
Data Logger config version 1.3, app version 1.0
- Add gRPC support.
- Add user defined output tags and groups. This allows values to be written from the app to the PLC.
- Convert logged data to use the PLC Shift Tables API.
- Reduce the number of logging groups from 16 to 4.
- Make the tag value type configurable for numeric logging types. Previously the type was fixed and could not be changed. This makes logging groups much more flexible.
Liquid Flow config version 1.5, app version 1.0
- Add gRPC support.
- Fix units conversion issues with mass flow.
- Improve handling of the case where mass flow or volume values input values are negative.

April 15, 2025

PLC Shift Manager version 1.75
- No changes.
PLC Shift core app runtime version 1.75
- No changes.
Plunger Lift config version 1.9, app version 1.1
- Fix a bug with optimization when using fixed increments when the 'Advance to After Flow Delay' command is used before any plunger arrival.

April 9, 2025

PLC Shift Manager version 1.74
- No changes.
PLC Shift core app runtime version 1.74
- No changes.
Liquid Flow config version 1.4, app version 1.2
- Fix a bug with batch history where the Net Standard Volume Water tag was being overwritten by the Water Cut tag value and the Water Cut value was not populated correctly.

April 2, 2025

PLC Shift Manager version 1.73
- Fix a bug where Modbus server indexes were not incremented correctly when an app was imported from file.
- Add Plunger Lift v1.9.
PLC Shift core app runtime version 1.73
- No changes.
Plunger Lift config version 1.9, app version 1.0
- Allow the optimization algorithm to adjust timer conditions using fixed increments.

March 19, 2025

PLC Shift Manager version 1.72
- Fix a bug where Modbus server settings would not be copied when migrating an app from one version to another.
PLC Shift core app runtime version 1.72
- No changes.

March 19, 2025

PLC Shift Manager version 1.71
- Add Plunger Lift v1.8.
PLC Shift core app runtime version 1.71
- Add Plunger Lift v1.8.
Plunger Lift config version 1.8, app version 1.0
- Add additional cycle history status parameters.
- Add cycle history tables. Multiple days worth of cycle history will be stored on the device and can be retrieved and displayed in PLC Shift Manager.
- Load stored cycle data into plunger cycle history parameters when the application starts. Previously, cycle history was lost on a power cycle.

March 16, 2025

PLC Shift Manager version 1.70
- Fix a bug where an exception would sometimes be thrown when copying values from one app to another using the Compare tab.
PLC Shift core app runtime version 1.70
- Fix a bug with the Modbus PLC driver where writes would sometimes not occur properly when a group of registers ended on a 32 bit value.
Gas Lift config version 1.4, app version 1.0
- Modbus server support.
- Logging is controlled with a configuration parameter instead of a control parameter. This makes the setting persistent over restarts.

February 26, 2025

PLC Shift Manager version 1.69
- No changes
PLC Shift core app runtime version 1.69
- No changes.
Plunger Lift config version 1.7, app version 1.1
- Fix a bug where advance commands were not processed correctly.
Plunger Lift config version 1.6, app version 1.2
- Fix a bug where advance commands were not processed correctly.

February 22, 2025

PLC Shift Manager version 1.67
- Fix a bug where the user defined tags tab would not appear when an appp was created from an upload. The tab would not appear on the initial upload but would appear when going online.
- Fix an issue where the history tab would not be shown for Gas Flow v1.9 and Liquid Flow v1.4.
PLC Shift core app runtime version 1.67
- No changes.

February 19, 2025

PLC Shift Manager version 1.66
- Fix a bug with the Modbus server Ignition export. When a user defined value is a 32 bit value a duplicate tag was included in the export file. This caused the address to be incorrect.
PLC Shift core app runtime version 1.66
- Add support for licensing on Weidmuller UC20-M3000/M4000 devices.
Liquid Flow config version 1.4, app version 1.0
- Add Modbus server support.

Februrary 11, 2025

PLC Shift Manager version 1.65
- Add support for Modbus server. Read and write tag values using the Modbus protcol without mapping tags to the PLC.
PLC Shift core app runtime version 1.65
- Add support for Modbus server. Read and write tag values using the Modbus protcol without mapping tags to the PLC.
Gas Flow config version 1.8, app version 1.3
- Add additional logging to pinpoint app slowdowns.
- Change the way that table data is cleaned up to reduce file system pressure.
Gas Flow config version 1.9, app version 1.0
- New version that supports the Modbus server feature. Unchanged from v1.8 otherwise.
Liquid Flow config version 1.3, app version 1.3
- Add additional logging to pinpoint app slowdowns.
- Change the way that table data is cleaned up to reduce file system pressure.
Plunger Lift config version 1.6, app version 1.0
- New version that supports the Modbus server feature. Unchanged from v1.5 otherwise.

January 26, 2025

PLC Shift Manager version 1.59
- No changes.
PLC Shift core app runtime version 1.59
- Explicitly specify locations for the certificate stores used by the OPC-UA driver. This prevents issues with the driver trying to write to unwriteable locations, especially when running in a container.
Gas Flow config version 1.8, app version 1.1
- Do not vacuum the internal sqlite database after deleting records. On certain target devices with slow filesystems this action can take a very long time and cause the system to hang.
Liquid Flow config version 1.3, app version 1.1
- Do not vacuum the internal sqlite database after deleting records. On certain target devices with slow filesystems this action can take a long time and cause the system to hang.

January 21, 2025

PLC Shift Manager version 1.58
- Add Gas Flow v1.8 and Liquid Flow v1.3.
PLC Shift core app runtime version 1.58
- Update tables API code to support new features in Gas Flow v1.8 and Liquid Flow version 1.3
Gas Flow config version 1.8, app version 1.0
- Allow the user to configure the amount of flow history that is saved in the local database.
- Add status information that shows the size of the local database file on disk and how many records are stored in the database.
Liquid Flow config version 1.3, app version 1.0
- Allow the user to configure the amount of flow history that is saved in the local database.
- Add status information that shows the size of the local database file on disk and how many records are stored in the database.

January 8, 2025

PLC Shift Manager version 1.57
- Fix a bug with the Remote Connect export where uint32 values were sometimes exported as int32 (analog) values. Uint32 values are now always exported as Remote Connect counter (UDINT) objects.
PLC Shift core app runtime version 1.57
- No changes.

January 5, 2025

PLC Shift Manager version 1.56
- No changes.
PLC Shift core app runtime version 1.56
- Fix a bug where sensor polling using the Modbus RTU in TCP protocol would not restart correctly after the TCP connection was dropped.
- Fix a bug where i16, ui16 and i32 values would sometimes not be written correctly from the PLC Shift runtime to an SP47xi device.
Gas Flow config version 1.7, app version 1.1
- Fix a bug where MVS events were not generated correctly.
Liquid Flow config version 1.2, app version 1.1
- Fix a bug where sensor events were not generated correctly.

December 12, 2024

PLC Shift Manager version 1.55
- No changes.
PLC Shift core app runtime version 1.55
- Change the way that the machine ID that is used for licensing in generated for Sensia HCC2 devices. The machine ID is now more stable. Previously the machine ID could sometimes change on a power cycle.
- Sign the runtime build image for Sensia HCC2 using Reverity's private key. An SDK license is no longer required to run PLC Shift on the HCC2.

December 10, 2024

PLC Shift Manager version 1.54
- No changes.
PLC Shift core app runtime version 1.54
- Improve the SCADAPack 47xi tag DB driver to reduce update times on write and make writes from the app to the RTU more reliable. In previous versions, when many tags were synced with the RTU, writes were very rarely lost.

December 5, 2024

PLC Shift Manager version 1.53
- No changes.
PLC Shift core app runtime version 1.53
- Downgraded the bundled version of the internationalization library (libicu) to version 63.1 from 67.0.1.7 for arm32 builds. This allows the runtime to start on Xetawave devices.

Novemember 28, 2024

PLC Shift Manager version 1.52
- Add a GUI to configure Ezurio BLE654 USB Bluetooth dongles.
- Use an Ezurio BLE654 dongle to communicate with, configure and collect data from TE Connectivity BLE (Bluetooth Low Energy) wireless sensors, including M5601 pressure sensors and D5601 differential pressure sensors.
PLC Shift core app runtime version 1.52
- No changes.
Plunger Lift config version 1.5, app version 1.2
- When a plunger exists and the plunger doesn't arrive, move to the 'End of Cycle' state and then the 'Waiting for Flow State' immediately without evaluating shut in conditions.
- When a plunger exists and the plunger arrives, move to the 'After Flow Delay' state.

Novemember 14, 2024

PLC Shift Manager version 1.51
- No changes.
PLC Shift core app runtime version 1.51
- Fix a bug with the Modbus tag DB driver which affected Gas Flow v1.7 and Liquid Flow v1.2. The Modbus driver would sometimes not poll the PLC when using these two apps.

Novemember 4, 2024

PLC Shift Manager version 1.50
- Update Rockwell Logix L5X export to clip data type names to 40 characters. Export files with names longer than 40 characters cannot be imported into Studio 5000.
PLC Shift core app runtime version 1.50
- Fix a bug where the Log Level control parameter, which was removed for some apps and replaced with a configuration parameter, was improperly included in Tag DB driver exports.

October 22, 2024

PLC Shift Manager version 1.49
- Update the way that tabular data is retrieved, stored, displayed and exported for Gas v1.7 and Liquid Flow v1.2.
- Bundle .sql files that contain T-SQL that allow the user to create tables in MS MSQL Server for Gas Flow v1.7 and Liquid Flow v1.2 data.
PLC Shift core app runtime version 1.48
- Optionally allow the export of tabular data directly to MS SQL Server.
- Make the logging level at the device level a configuraiton parameter. This makes the logging level sticky over restarts.
Gas Flow config version 1.7, app version 1.0
- Change the way that flow computer history is handled internally within the app.
- Make the logging level a configuration parameter. This makes the logging level sticky over restarts.
Liquid Flow config version 1.2, app version 1.0
- Change the way that flow computer history is handled internally within the app.
- Make the logging level a configuration parameter. This makes the logging level sticky over restarts.

October 2, 2024

PLC Shift Manager version 1.48
- Update Sensia HCC2 Modbus export for newer firmware versions. Optionally allow dictionary parameters to be converted to HCC2 ENUM types.
PLC Shift core app runtime version 1.48
- Update the SCADAPack 47xi driver to fix a memory leak. All SCADAPack 47xi customers should update to this version to avoid a failure after months of uptime.

September 18, 2024

PLC Shift Manager version 1.47
- No changes
PLC Shift core app runtime version 1.47
- Fix an issue with the Modbus driver where reads of 32 bit values would sometimes not get the second register.

September 9, 2024

PLC Shift Manager version 1.46
- No changes
PLC Shift core app runtime version 1.46
- No changes
Liquid Flow config version 1.1, app version 1.1
- Fix an issue when configured for water measurement and when the volume flow rate is 0.
Plunger Lift config version 1.5, app version 1.1
- Allow the recovery mode time to be changed when in recovery mode. Previously, this value was cached at the moment that recovery mode was entered and could not be changed until recovery mode was exited.

August 30, 2024

PLC Shift Manager version 1.45
- Add an export for Sensia HCC2 that contains tag and Modbus register information.
- Add an export for Inductive Automation Ignition that contains tag names and Modbus addresses.
- Allow the user to assign a prefix to all user defined tags for a single app at once.
- Allow PLC Shift Manager to connect to the PLC Shift core app runtime directly without creating an SSH tunnel. This will require ports to be opened in the firewall on the remote device.
- Do not use SFTP to retrieve log files for runtime version 1.45 and newer. This is useful for devices that do not support SFTP.
PLC Shift core app runtime version 1.45
- Relax the limits on the Modbus station address for the PLC driver. The new range is from 0 to 255.
- Allow PLC Shift Manager to retrieve log files through the runtime instead of using SFTP.
- Fix a bug in the Modbus PLC driver where an unused register at the end of a block of regsiters was sometimes written.
Liquid Flow config version 1.1, app version 1.0
- Change the data type for pulse inputs from int32 to uint32.
- Add configuration parameters for rollover values for mass and volume pulse inputs.Previously the rollover was implicit in the underlying data type (int32 = 2147483647). This lets the user set the rollover value explicitly.
- Allow the zero flow cutoff for pulse inputs to be 0, effectively disbaling zero flow detection. When the cutoff is set to 0 counts, detect 0 flow when the counts are 0 for 60 seconds. Allowing the setting to be 0 prevents the flow computer from constantly entering and exiting the zero flow state when the counter inputs are updated at less than once per second.

May 8, 2024

PLC Shift Manager version 1.44
- Support Modbus RTU (serial) and Modbus RTU in TCP protocols for the tag DB (PLC) driver.
PLC Shift core app runtime version 1.44
- Support Modbus RTU (serial) and Modbus RTU in TCP protocols for the tag DB (PLC) driver.

April 24, 2024

PLC Shift Manager version 1.43
- Update ARM32 deployment scripts to detect whether the init system is systemd or SysV. When SysV is detected, install into the SysV init system instead of systemd.
PLC Shift core app runtime version 1.43
- No changes.

April 24, 2024

PLC Shift Manager version 1.43
- Update ARM32 deployment scripts to detect whether the init system is systemd or SysV. When SysV is detected, install into the SysV init system instead of systemd.
PLC Shift core app runtime version 1.43
- No changes.

April 3, 2024

PLC Shift Manager version 1.42
- No changes.
PLC Shift core app runtime version 1.42
- When using a Codesys soft PLC and the OPC-UA protocol, when a complete download or a warm restart of the Codesys program happens, tag values in the soft PLC are initialized to zero values. If a read is not occuring at exactly the same moment, the OPC-UA connection is not dropped and no errors occur, however, the 0 values are transferred from the PLC into the app.
  A fix was implemented to detect this situtation and to disconnect from the PLC so that zerotag values do not get moved into an app.
- Small improvements in the OPC-UA driver.

March 28, 2024

PLC Shift Manager version 1.41
- Fixed a bug where CFX export parameters were hidden incorrectly for apps that were not Gas Flow, which in turn caused problems with generating PLC export files.
PLC Shift core app runtime version 1.41
- No changes.

March 25, 2024

PLC Shift Manager version 1.40
- Add Plunger Lift config version 1.5.
PLC Shift core app runtime version 1.40
- No changes.
Plunger Lift config version 1.5, app version 1.0
- Change the data type for the 'Off Time' flow condition, 'Off Time Recovery Mode' parameter and 'On Time' shut in condition to int32.
- Increase the limits for the 'Off Time' flow condition, 'Off Time Recovery Mode' parameter and 'On Time' shut in condition to 10 000 000.

March 21, 2024

PLC Shift Manager version 1.39
- Make communications timeout and refresh rate settings on the 'Synchronize' tab persistent.
- Add deployment support for generic 64 bit architecture ARM devices (aarch64) that run Debian 11 (Bullseye).
- Update the view in the parameters grid after a parameter value is changed and a filter is active. This allows the values to be re-filtered.
PLC Shift core app runtime version 1.39
- No changes.

March 13, 2024

PLC Shift Manager version 1.38
- Modify Codesys DUT export to remove illegal characters from tag names.
PLC Shift core app runtime version 1.38
- Modify the way that tag names are generated when using OPC-UA to remove illegal characters. This matches the change that was made in the DUT export from PLC Shift Manager.
- Fix a bug where if direct polling of a sensor was enabled in an app, then disabled, input tag values changes from PLC Shift Manager would not be written to the app correctly.
- Revert some dependencies to older versions so that the app runtime executes correctly on Moxa Industrial Linux (MIL) v1.
Liquid Flow config version 1.6, app version 1.4
- Fix a bug where the atmospheric pressure value was sometimes not subtracted correctly from the static pressure value when configured for absolute pressure input when using the MPMS 11 (Oil) algorithm.

March 7, 2024

PLC Shift Manager version 1.36
- Prevent rows in data grids from being deleted by pressing the 'delete' key.
PLC Shift core app runtime version 1.36
- Fix a regression where runtime execution on Opto-22 devices would fail because the latest version of SQLite was not supported. This bug was introduced in version 1.33.

March 5, 2024

PLC Shift Manager version 1.35
- No changes.
PLC Shift core app runtime version 1.35
- Fix a bug where the Modbus TCP connection to a gas MVS or liquid Coriolis meter was reinitialized on a complete download even though no configuration changes occured.
Gas Flow config version 1.6, app version 1.3
- Mark the static pressure input value as invalid when it is equal to or less than 0. Previously the value was only marked invalid when it was less than 0.
- Fix a bug where the atmospheric pressure value was sometimes not added correctly to the static pressure value when configured for gauge pressure input.

February 27, 2024

PLC Shift Manager version 1.34
- Update descriptions of Raspberry Pi variants in the deployment section to clarify whether operating systems and architectures are 32 bits or 64 bits.
- Allow the user to configure the refresh rate when online. In previous versions this was hardcoded to 250 ms, which created a noticeable load on remote devices when there were many apps. CPU usage on the remote device can be reduced considerably when online by increasing the refresh rate.
PLC Shift core app runtime version 1.34
- No changes.

February 15, 2024

PLC Shift Manager version 1.33
- No changes.
PLC Shift core app runtime version 1.33
- Update to .NET 8 from .NET 6. .NET 8 is a long term support version with numerous bug fixes, security patches and performance enhancements.
  Redeployment of the PLC Shift runtime is required to upgrade to this version. The update scripts cannot be used.
  To upgrade on non SCADAPack devices, run the remove script, deploy the new runtime files, then run the install script. To upgrade SCADAPack devices, download and install the version 3 overlay file system as described in the user manual.
  Data on the remote device, including configurations, flow computer data and log files will be deleted when the removal script runs, so make sure to take backups before upgrading.
- Update all dependencies to the latest stable versions. Newer versions incorporate many feature enhancements, security patches and bug fixes.

February 13, 2024

PLC Shift Manager version 1.32
- Allow the user to optionally skip validation of the remote device operating system and architecture for deployment.
- Fix a bug where device level control parameters could not be updated when online.
- Update deployment for SCADAPAck to put files onto the NAND partition at '/mnt/data/user_data' instead of in the user's home directory, which is on the SD Card. This speeds up file system operations, like unpacking the archives, considerably.
PLC Shift core app runtime version 1.32
- Improve the way that tags are read from SCADApack. Aggregate reads for all apps into a single set of transactions, instead of reading each app one by one. This greatly reduces CPU usage by Redis on the SCADAPack Linux processor.
- Reduce the time before log files are deleted for SCADAPack from 14 days to 7. This results in less disk space being used for logs on SCADAPack.
Gas Flow config version 1.6, app version 1.1
- Reduce the amount of logging on SCADAPack by raising limits for warning messages regardling slow execution.
Liquid Flow config version 1.0, app version 1.3
- Reduce the amount of logging on SCADAPack by raising limits for warning messages regarding slow execution.

February 8, 2024

PLC Shift Manager version 1.31
- No changes.
PLC Shift core app runtime version 1.31
- Fix an issue with licensing on RevPi where power cycling the RTU would sometimes cause a previously valid app license to become invalid. Again.

February 5, 2024

PLC Shift Manager version 1.27
- Add additional logging during deployment step.
PLC Shift core app runtime version 1.27
- Fix an issue with licensing on RevPi where power cycling the RTU would sometimes cause a previously valid app license to become invalid.

January 27, 2024

PLC Shift Manager version 1.26
- No changes.
PLC Shift core app runtime version 1.26
- Fix an issue with licensing on SCADAPack 47xi where power cycling the RTU would sometimes cause a previously valid app license to become invalid.

January 25, 2024

PLC Shift Manager version 1.25
- Add Gas Flow v1.6 with Flowcal CFX format file generation and export.
PLC Shift core app runtime version 1.25
- Add generation and export of Flowcal CFX files.
Gas Flow v1.6
- Changes to support Flowcal CFX file generation.

January 3, 2024

PLC Shift Manager version 1.24
- Add Liquid Flow v1.0. This is the first production release.
PLC Shift core app runtime version 1.24
- No changes.
Liquid Flow version 1.0
- Initial production release.

December 28, 2023

PLC Shift Manager version 1.23
- Render app diagnostic logs lazily in the GUI. This prevents a UI freeze when loading very large log files.
PLC Shift core app runtime version 1.23
- Improve gas and liquid flow history export and add additional information.
Gas Flow version 1.5, app version 1.1
- Fix a bug where batch alarms counts were sometimes not cleared correctly when a new batch was started.
- Make sure that the Batch User ID is attached to alarm records only when a batch is active.
- Prevent the Batch User ID from being attached to the partial record that is created when a new batch is started.
Liquid Flow version 0.7, app version 1.2
- Fix a bug where batch alarms counts were sometimes not cleared correctly when a new batch was started.
- Make sure that the Batch User ID is attached to alarm records only when a batch is active.
- Prevent the Batch User ID from being attached to the partial record that is created when a new batch is started.
- Fix issues with calculating two phase flow time when in batch mode.
- This is a pre-release version and cannot be deployed to the field. Most features should work, but measurement accuracy cannot be guaranteed with this version.

December 17, 2023

PLC Shift Manager version 1.22
- Fix a bug with retrieving large amounts of flow computer history.
PLC Shift core app runtime version 1.22
- When using the OPC-UA protocol to communicate with a PLC, write all tags to the PLC once per minute to ensure that everything stays in sync, rather than only writing changes.
Liquid Flow version 0.7, app version 1.1
- Fix a bug where pulse inputs for water runs weren't handled correctly.
- This is a pre-release version and cannot be deployed to the field. Most features should work, but measurement accuracy cannot be guaranteed with this version.

December 12, 2023

PLC Shift Manager version 1.21
- Fix a bug where an app that was created from an upload sometimes did not go online correctly.
- Allow the user to choose whether to include the 'Edge Access Column' in an Remote Connect export file.
- Remove 'Sequence Number' column from Remote Connect export file.
- Add support for Opto-22 EPIC firmware version 3.5.
- Allow spaces in the 'OPC UA Node ID' parameter at the device level.
- Fix a bug with the Gas Flow units wizard where not all parameters were updated correctly.
- Add Gas Flow v1.5.
- Add Liquid Flow v0.7.
- Add Plunger Lift v1.4.
- Add Gas Lift v1.3.
- Mark older versions of apps as obsolete.
PLC Shift core app runtime version 1.21
- Internal changes to support the latest versions of apps.
- Change the way the 'Row Key' column is generated for Azure table exports. This will lead to fewer collisions under certain conditions when apps that export tablular data are deleted and recreated.
Gas Flow Version 1.5
- Add 'Day User Id', 'Batch User ID' and 'Asset ID' values to history records. This makes reporting much easier by tying records together using these indexes, instead of timestamps.
- Add 'MQTT Alias Prefix' status parameter to make it easier to calculate the MQTT alias for tags.
- Rename 'Rosemount 4088B' to 'Rosemount '4088A'. This was a mistake previously.
- Allow all differential pressure values to select kPa units.
Liquid Flow version 0.7
- This is a pre-release version. Measurement accuracy cannot be guaranteed.
- Add 'MQTT Alias Prefix' status parameter.
Plunger Lift version 1.4
- Add 'MQTT Alias Prefix' status parameter.
Gas Lift version 1.3
- Add 'MQTT Alias Prefix' status parameter.

December 6, 2023

PLC Shift Manager version 1.20
- Improve communications reliability when online with remote devices and apps.
- Add Liquid Flow v0.6.
PLC Shift core app runtime version 1.20
- Internal changes to support Liquid Flow app
Liquid Flow version 0.6
- Initial release.
- This is a pre-release version and cannot be deployed to the field. Most features should work, but measurement accuracy cannot be guaranteed with this version.

June 29, 2023

PLC Shift Manager version 1.13
- No changes.
PLC Shift core app runtime version 1.13
- Fix a bug with the EtherNET/IP driver on startup where it would go into an infinite loop when there were a large number of tags in the controller.

June 13, 2023

PLC Shift Manager version 1.11

Fix a bug where hidden parameters were sometimes included in the Codesys DUT export.

PLC Shift core app runtime version 1.11

Fix bugs in Opto22 update scripts.

Fix a bug where the OPC-UA client library could not be started under certain conditions.

May 29, 2023

PLC Shift Manager version 1.10

Add support for Schneider Electric SCADAPack 470i and 474i devices.

PLC Shift core app runtime version 1.10

Add support for Schneider Electric SCADAPack 470i and 474i devices.

May 18, 2023

PLC Shift Manager version 1.9

Add support for app export to CODESYS DUT (data unit type).

Add OPC-UA configuration options to latest versions of apps.

PLC Shift core app runtime version 1.9

Add support for OPC-UA as a PLC communications protocol.

May 3, 2023

PLC Shift Manager version 1.8

No changes.

PLC Shift core app runtime version 1.8

Fix a bug where a Rosemount 3095 MVS wasn't supported properly when polling using the Modbus RTU protocol.

Improve how tag values are handled when polling an MVS directly and the connection to the MVS drops. This applies to all protocols: Modbus RTU, Modbus TCP and Modbus RTU in TCP.

May 1, 2023

PLC Shift Manager version 1.6

Support tiered licenses and additional license features.

Display log files in a lazy way. When the user scrolls to the bottom of the display area, render more lines if lines are available. This makes is easier to work with large log files.

Suppress upload when there are no remote apps.

Update install and release scripts to use .net version 6.0.16.

Add the ability to mark app versions as pre-release or obsolete. Mark older app versions as obsolete.

Add PLC Shift blob connection string. Rename existing connection string to queue connection string.

Support Rasbian 64 bit OS (aarch64).

PLC Shift core app runtime version 1.6

Update all apps to new versions to support tiered licensing.

Update .net version to 6.0.16.

Add PLC Shift Cloud export functionality for streaming values, log records, tabular data and configuration backups.

Gas Flow version 1.4

Fix a bug where a momentary connection disruption when polling a multivariable sensor directly using Modbus TCP would cause the input values to be marked as bad, but not be marked as good when the connection is restored. This issue only arises during testing because values are static and never change.

March 17, 2023

PLC Shift Manager version 1.5

No changes

PLC Shift core app runtime version 1.5

Update the MQTT task so that if a subscribed MQTT value does not have an alias the system will try to match by topic and tag name instead. This makes intergation with other systems easier, because we don't need to keep a map of aliases to tag names in that other system. This map is only sent in a DBIRTH message.

March 1, 2023

PLC Shift Manager version 1.4

Add Gas Flow version 1.3.

PLC Shift core app runtime version 1.4

Update the way that app plug-ins are loaded to prevent an exception on startup with Gas Flow version 1.3.

Update the IO task to use additional configuration options from Gas Flow 1.3 for serial port parity and stop bits settings.

Gas Flow version 1.3

Add support for Rosemount 3095 multivariable sensor. Many other sensors, like ABB 266, can emulate this sensor.

Allow configuration of parity and the number of stop bits when polling a multivariable sensor directly using the Modbus RTU protocol and a serial port.

February 26, 2023

PLC Shift Manager version 1.3

Do not read all tags for an app when going online unless the app's tab is visible. Wait to connect and read until the app's tab is made visible by the user. This reduces communications load when going online with a device that has many apps.

PLC Shift core app runtime version 1.3

Improve the EIP driver and implement workarounds for bugs in Rockwell V20 firmware.

Add additional logging when a EIP CIP status exception is thrown.

February 15, 2023

PLC Shift Manager version 1.2

Change the way that the manager disconnects when online and number of consecutive timeouts occur. Improve logging when this happens.

PLC Shift core app runtime version 1.2

No changes

February 14, 2023

PLC Shift Manager version 1.1

When online, disconnect from a remote device after a number of consecutive communications timeouts.

PLC Shift core app runtime version 1.1

Allow multiple sensors to be polled sequentially when the protocol is Modbus RTU in TCP. Multiple sensors can now be connected on the serial side of a terminal server (TCP to serial converter.) No app changes were required for this feature.

Add some logic to recover gracefully when PLC Shift Manager is running in a virtual machine and the machine is suspended. Time out the connections on the app side when this happens.

February 12, 2023

PLC Shift Manager version 1.0
Initial release

PLC Shift core app runtime version 1.0
Initial release