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CANopen PDO Write

RoyMartinezRoyMartinez
in PLCnext Technology & PLCnext Controls

Hello everyone,


I am working on establishing communication between an Invertek VFD and the AXC F 2152 PLC using the AXL F CAN module and the CAN Basic library. My current code is designed to send a start command to the VFD.

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I have followed the examples provided in the library documentation, but I cannot figure out how to handle writing to specific CANopen indices (e.g., 2000h or 2001h for the VFD).

The issue I’m facing is that the CAN_CO_PDO_Write block from the library only asks for the Node ID and COB ID, but it does not allow me to specify an Index or Subindex for the data I want to write.

According to the VFD manual, SDOs (Service Data Objects) are only used for changing parameters, so they are not applicable for my current use case

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Additionally, I have some doubts about the software configuration for the AXL F CAN module in PLCnext Engineer. I have connected the CAN_H, CAN_L, and GND lines physically, but I want to confirm if there are specific settings or mappings required in the software to ensure the module is properly initialized and functioning as expected.

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Does anyone have suggestions or experience handling this situation?




Thank you in advance for your help!

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