Appendix, Rs-232 connector technical information, Interconnecting to dte devices – Zebra Technologies S400 User Manual
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NOTE: When XON/XOFF handshaking is selected, data flow is
controlled by the ASCII control codes DC1 (XON) and DC3
(XOFF). The DTR control lead has no effect.
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The printer is configured as data terminal equipment (DTE). To connect
the printer to other DTE devices (such as the serial port of a personal
computer), use an RS-232 null modem (crossover) cable. Figure 31 shows
the required cable connections.
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When the printer is connected via its RS-232 interface to data
communication equipment (DCE) such as a modem, a STANDARD
RS-232 (straight-through) interface cable must be used. Figure 32 shows
the connections required for this cable.
RS-232 Connector Pinouts
Pin. No.
Description
1
Not used
2
RXD (receive data) input to the printer
3
TXD (transmit data) output from the printer
4
DTR (data terminal ready) output from the printer — controls when the host
may send data
5
Chassis ground
6
DSR (data set ready) input to the printer
7
RTS (request to send) output from the printer — always in the ACTIVE
condition when the printer is turned on
8
Not used
9
5 V Fused