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Printer Interface Technical Information
Serial Data Communications
The following table illustrates the pin connections on the DB-25 connector at the rear
of the printer.
Zebra Z4M Printer User’s Guide 85
Pin No. Description
1
Chassis ground
2
TXD (transmit data) output from the printer
3
RXD (receive data) input to the printer
4
RTS (request to send) output from the printer
5
Not used
6
DSR (data set ready) input to the printer
7
RS-232 signal ground
8
Not used
9
+5V @ 1A source
10
Not used
11
RS-485 signal ground
12
Not used
13
RS-485 input A(–)
14
RS-485 output A(–)
15
Not used
16
RS-485 input B(+)
17 and 18
Not used
19
RS-485 output B(+)
20
DTR (data terminal ready) output from the printer
21-25
Not used
Appendix