Description - Intermec EasyCoder 501 Service Manual

Chapter 21
21. RS-422/485 Interface Board

21.1 Description

164
The RS- 422/485 Interface Board adds two more serial communi-
cation ports ("uart2:" and "uart3:") to the standard serial commu-
nication port ("uart1:").
The RS-422/485 interface is galvanically insulated from the printer
in order to avoid electrical interference.
The RS-422/485 Interface Board may either be bought separately
as a kit complete with installation instructions, or be factory
installed.
With the RS-422/485 Interface Board installed, the following
types of interfaces can be selected:
"uart1:"
RS-232
RS-422 or 20 mA CL
"uart2:"
RS-422/RS 485
"uart3:"
RS-232
0
230V
Fitted on printer's CPU board.
Standard.
Option. Additional circuits required.
Fitted on RS-422/485 interface pcb.
Type selected by straps and cable confi guration
Fitted on RS-422/485 interface pcb.
Intermec EasyCoder 501 – Service Manual Ed. 7
"uart3:"
"uart2:"
"uart1:"