ATEIS DIVA8G2 - Manual (Page 47)

Product Features 47
© 2012 ATEÏS
To learn more about how to perform a monitorable contact, please read this.
4.1.1.5.3 C) RS232 Connector
Wiring
There are several ways of using DIVA serial port. Here are a few examples.
Remember to always cross Tx and Rx, means that Tx from DIVA goes to Rx from a master.
With IDA4M(XM,SW):