Zebra 105 SL - Appendix A: DB25 Connectors

Zebra 105SL User’s Guide 99
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The connections for these standard interfaces are made through the DB25S
connector on the rear panel. For all RS-232 input and output signals, the
printer follows both the Electronics Industries Association’s (EIA) RS-232
specifications and the Consultative Committee for International Telegraph
and Telephone (CCITT) V.24 standard signal level specifications.
Table 2 shows the pin configuration and function of the rear panel serial
data connector on the printer.
Table 2
Pin No. Description
1 FG (frame ground) for cable shield
2 TXD (RS-232 transmit data) output from printer
3 RXD (RS-232 receive data) input to printer
4 RTS (RS-232 request to send) output from printer
6 DSR (data set ready) input to printer
7 SG (signal ground) for RS-232
9 +5 VDC source output (1 Amp maximum)
11 SGR (signal ground reference) for RS-422/RS-485
13 Data input B(-); RS-422/RS-485
14 Data output B(-); RS-422/RS-485
16 Data input A(+); RS-422/RS-485
19 Data output A(+); RS-422/RS-485
20 DTR (RS-232 data terminal ready) output from printer
NOTE: Pins 5, 8, 10, 12, 15, 17-18, 21-25 are unused and unterminated.