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Appendix C
Overview
RS-232 Serial Interface Connector Pin Assignments
The printer provides a 25-pin DB-25S connector inside the lower
cabinet for connection of a serial interface cable. This connector is
also used for the RS-422 serial interface. Selection of the desired
interface is determined by the position of the RS-232/422 switch
located inside the lower cabinet of the printer.
The following table lists the pin assignments of the RS-232
interface connector.
Pin
11, 14
250
Signal
1
Chassis Ground
2
Transmit Data (TxD)
3
Receive Data (RxD)
4
Request To Send (RTS)
5
Clear To Send (CTS)
6
Data Set Ready (DSR)
7
Signal Ground
8
Carrier Detect (CD)
Reverse Channel (RC)
20
Data Terminal Ready (DTR)
Direction
Not applicable
From printer
To printer
From printer
To printer
To printer
Not applicable
To printer
From printer
From printer
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