Xon / Xoff; Standard Connection - PSI Matrix PP 803 Benutzerhandbuch

Appendix A System Interface Description
A.1.2.2

XON / XOFF

This protocol requires all signal lines.
Pin 1 Protective Ground (PG)
2 Transmit Data (TXD)
3 Receive Data (RXD)
7 Signal Ground (SG)

Standard Connection

For local connections RTS with CTS can be connected and likewise DTR with DSR.
A-6
4 Request to Send (RTS)
5 Clear to Send (CTS)
6 Data Set Ready (DSR)
20 Data Terminal Ready (DTR)