Parallel Port Connections; Serial Port Connections - Datamax A-Class A-4212 Operator's Manual

2.2.2.1 Parallel Port Connections

The parallel interface requires a Centronics
Bi-directional mode is IEEE 1284 compliant, allowing data to be returned to the host.

2.2.2.2 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
Port A and COM C Connections
A-Class
®
RS-422 & RS-485 Function
RX
TX
DTR
Ground
---
RTS
CTS
---
10101010
IEEE 1284 cable with a 36 pin male connector.
Port A, only
---
RXD +
TXD –
RXD –
Ground
---
RTS
CTS
TXD +
COM D (J3)
RS-232 Function
+5V (@ .5 amps)
RTS
Ground
TX
RX
Ground
CTS
DTR
---
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