PLC IDE 1.1.0 2026.2.25

• Update over Modbus TCP (reintroduced and correctly implemented)
• Hide the 2nd debug COM port
• Add OSCAT libraries
• GUI for Ethernet and Wifi
• Access directly I/O variables in sketch
• Read/write RTC clock
• TON/TOFF with TIME interval
• Watchdog Support
• New partitioning scheme aligned with Provisioning 2.0

PLC IDE 1.0.8 2024.2.6

[fixes]

• Fix issues with the new JScript engine shipped with Windows 11 release 24H2.
• Automatically update the Arduino Library Index when PLC IDE starts.
• Fix minor issues.

[security]

• Implement critical security updates in response to Arduino Cloud certificate authority incident (ASEC-25-001).

PLC IDE 1.0.7 2024.9.17

[fixes]

• Always use the Arduino CLI provided with the installer.
• Fixed shared variables type string.

[ide]

• Added EULA.

• Added the support for Analog Expansion. A firmware update of the Analog Expansion device is required.

• Added the watchdog.

PLC IDE 1.0.6 2024.4.30

[ide]

• Support for External OPTA Digital Expansions.

• Single installer for Tools and Software.

• Support for array and string type shared variables, exchanged between the runtime PLC and the sketch.

• GenericModbus TCP type added.

• Cyclic task Fast, removed option to force cycle below 10ms - turned to 10- 20- 50ms options drop-down menu.

• Fixed the Opta tag from “Button inputs” to “Button Inputs” and label tag for the local variables from: “Relay outputs mapping” to “Button input”.

• New Flash Partitioning implementation + WiFi firmware upload.

• Integration with the Arduino IoT Cloud added.

• Added the possibility to specify the Node ID Modbus for Modbus TCP Master communications.

• Sketch template modified for the ETH class modification used in the new config.

• GUI for specifying inter-frame timings in Modbus RTU.

• Addition of sysMbMRtu_SetPostDelay function, to be called in the setup() of the Sketch.

• Modifications implemented on tasks and priorities to enable the use of Arduino classes for network use.

• Install Arduino USB drivers during setup of Arduino PLC IDE Tools.

• Updated ArduinoCore-mbed to 4.1.1.

• Updated AlPLC libraries to 1.1.0

[security]

• Removed access to PLC Runtime remote-control Modbus registers (Modbus address > 65000).
• Removed debugging symbols from PLC runtime libraries.
• Fixed IDE licensing bypass.
• Removed unsupported PLC program upload methods: GDB, Modbus TCP.

PLC IDE 1.0.4 2023.8.7

[ide]

• Support for array and string type shared variables, exchanged between the runtime PLC and the sketch.

• GenericModbus TCP type added.

• Cyclic task Fast, removed option to force cycle below 10ms - turned to 10- 20- 50ms options drop-down menu.

• Fixed the Opta tag from “Button inputs” to “Button Inputs” and label tag for the local variables from: “Relay outputs mapping” to “Button input”.

• New Flash Partitioning implementation + WiFi firmware upload.

• Integration with the Arduino IoT Cloud added.

• Added the possibility to specify the Node ID Modbus for Modbus TCP Master communications.

• Sketch template modified for the ETH class modification used in the new config.

• GUI for specifying inter-frame timings in Modbus RTU.

• Addition of sysMbMRtu_SetPostDelay function, to be called in the setup() of the Sketch.

• Modifications implemented on tasks and priorities to enable the use of Arduino classes for network use.

• Install Arduino USB drivers during setup of Arduino PLC IDE Tools.

PLC IDE 1.0.3 2023.3.22

[fixes]

• Simulation grayed out.

• Separate selection of RS485/RS422/RS232 for Portenta Machine control.

[ide]

• Support for Opta added.

• Version control.

• Arduino Environments separation.

• Download project from target.