Serial Interface Rs-232C / Rs-422 - PSI Matrix PP 803 Benutzerhandbuch

Appendix A System Interface Description
A.1 Serial Interface RS-232C / RS-422
A.1.1. Interface Characteristics
PG Protective Ground
TXD Transmit Data (from printer to host)
RXD Receive Data (from host to printer)
RTS Request to Send (printer is requesting data transfer from host)
Clear to Send (host is ready to receive data from printer)
CTS
Data Set Ready (host is requesting data transfer from printer,can not
DSR
be used for flow control, internaly set to "1")
SG Signal Ground
Data Terminal Ready (printer is ready to receive - see also on the
following pages the data communication protocols for detail
DTR
meaning
PG Protective Ground
RDA Receive Data (from host to printer)
SDA Send Data (from printer to host)
SDB Not Send Data (from printer to host)
RDB Not Receive Data (from host to printer)
A-2
Signal Description RS-232C
Signal Description RS-422
Pin No. Direction
1 -
2 OUTPUT
3 INPUT
4 OUTPUT
5 INPUT
6 INPUT
7 -
20 OUTPUT
Pin No. Direction
1
-
3
INPUT
9
OUTPUT
10
OUTPUT
18
INPUT