TallyGenicom 34ppm Installation Instruction
Nov 04
Publication No. GEG-99203
RS232/422 Installation Guide for the 34ppm Laser Printer
2-7
RS-422 Serial Cable Pin Assignments
RS-422 Serial Cable Pin Assignments
Five pins of the 25-pin serial cable are utilized for the RS-422 standard:
◆ ◆ ◆
Pin No.
Signal
Direction
Description
1
GND
Frame Ground
15
RXD -
In
Receive Data +
17
RXD +
In
Receive Data -
19
TXD -
Out
Transmit Data -
25
TXD +
Out
Transmit Data +