PSI Matrix PP 806 Benutzerhandbuch Seite 126

Additional Information
After Power-ON DTR is activated and the printer is ready to receive data.
DTR is deactivated when the interface buffer has only space left for 256 more characters. Further
incoming data will be stored until the interface buffer is full. All data sent in addition will get lost.
DTR is activated again if there is a free interface buffer space of 512 characters.
DTR is immediately deactivated, if local mode is entered.
It is activated again, if local mode is left and a minimum of 512 bytes interface buffer is available.
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
4 Request to Send (RTS)
5 Clear to Send (CTS)
6 Data Set Ready (DSR)
20 Data Terminal Ready (DTR)
Appendix A-4