Connect a Delta HMI to WAGO 750-653 via ModBus

Hi everybody!

Has anyone connected a WAGO PLC to another device using a 750-653 Serial Interface?

You see, I'm using eCOCKPIT and the 'FbMbSimpleServerSerial' function block to try to conect the WAGO 750-8100 to a Delta HMI via RS485. I'm using the DOP-B03S211 Delta HMI, and the pins 1,5 and 6 of the COM1, and I have connected them to the 750-653 Serial Interface.

https://ae01.alicdn.com/kf/HTB13JmyXIfrK1RjSszcq6xGGFXa0.jpg
https://www.wago.com/media/images/h70/h05/9559519723550.jpg

The problem is: the WAGO PLC is not connecting to the HMI using the function block.
My configuration is the next one:
https://ibb.co/7pd091J
https://ibb.co/GtWxxNp

And I’m getting ERROR when the program is running; I don't know why.
 
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