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UsingModbusRTU_éCOCKPIT.md

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Using Modbus RTU with the é!COCKPIT runtime

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This page describes adding a modbus RTU device using the é!COCKPIT runtime. In case a function block for your specific device is not present yet in this project. Please consider reading the RS485 tips and tricks page if this is your first time connecting a RS485 device.

Assign the PLC serial port to the PLC runtime

In order use the onboard PLC serial port from the PLC runtime this needs to be configured from the web based management tool:

Note that it's necessary to reboot the controller after a change to this setting.

Required libraries

Make sure the following libraries are present in the project:

WagoAppPlcModbus

Using code to access the RS485 serial port

A specific implementation example can be found inside the project in the 'PLC_PRG_RS485' program.