Signal Board for Modbus RS485 Communication with SIMATIC S7-1200

Hello everyone,

I own a Siemens 1214C DC/DC/DC PLC (model number: 6ES7 214-1AG40-0XBO) and am looking to establish Modbus communication using an RS485 cable. I am seeking advice on selecting the appropriate signal board that would enable this connection.

Could anyone recommend a specific signal board or provide advice on what features to look for to ensure effective and reliable Modbus RS485 communication? Any help or shared experiences would be greatly appreciated.

Thank you very much for your time and assistance!

Hello karl_smith77!

For setting up a Modbus communication, Siemens has a FAQ dealing with this subject. I'm sure it will help you a lot. I have attached it below.

https://support.industry.siemens.com/cs/ww/es/view/47756141/en

Hello and thank you for your response!

I appreciate the link to the Siemens FAQ on Modbus communication. I have already viewed this resource, and while it provides good general information, I'm particularly interested in personal recommendations or experiences with specific signal boards that would be most compatible with my Siemens 1214C DC/DC/DC PLC (model number: 6ES7 214-1AG40-0XBO).