Parallel Port Connections; Serial Port Connections - Datamax a-class mark ii Operator's Manual

2.3.1 Parallel Port Connections

The parallel interface requires a Centronics IEEE 1284 cable with a 36 pin male connector. Bi-
directional mode is IEEE 1284 compliant, allowing data to be returned to the host.

2.3.2 Serial Port Connections

Serial Port A supports RS-232C and RS-422/RS-485 communications; COM C and COM D support
RS-232 (see Appendix D for exceptions). Pin-outs are given below. The port baud rate, word
length, parity, stop bits, and protocol must be configured to match the host's settings; see Section
4.2.5.
Port A, and COM C (J4)
Pin
Number
RS-232 Function
1 +5V (@ .5 amps)
2
3
4
5
6
7
8
9
For proper data exchange, the serial interface requires specific cable pin-outs. Serial cable
part numbers and wiring diagrams are shown below.
Part # 32-2300-01
*Printer serial ports A & C require a DB9 male connector (e.g., Startech C9PSM).
12
RS-422 & RS-485 Function
RX
TX
DTR
Ground
---
RTS
CTS
---
RS-232 Cables*
Port A, only
---
RXD +
TXD –
RXD –
Ground
---
RTS
CTS
TXD +
Part # 32-2301-01
COM D (J3)
RS-232 Function
+5V (@ .5 amps)
RTS
Ground
TX
RX
Ground
CTS
DTR
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A-Class