Interfaces; Standard Interface "Uart1 - Intermec EasyCoder 501 E Installation & Operation Manual

Interfaces

Standard Interface
"uart1:"
UART is an abbreviation for Uni-
versal Asynchronous Receiver
and Transmitter
"uart1:"
Intermec EasyCoder 501 E – Installation & Operation Ed. 1
All EasyCoder 501 printer models are fi tted with a DB25pin male
interface connector on their rear plates (communication port
"uart1:"). This connector can be used for an RS-232, an RS-422, or
a 20 mA current loop interface depending on how the CPU board is
strapped. In the latter two cases, additional circuits must be fi tted. The
confi guration of the connection cable is also important.
0
230V
If the printer is ordered without any connection cable, a suitable cable
can be procured locally and, if necessary, be modifi ed according to
the pinout descriptions in this chapter.
A shielded communication cable is required in order to comply
with the FCC/DOC approval and to avoid the risk of interference
to radio communications.
14
-20 mA CL 2
15
+RS-422 In
16
+5V Ext.
17
-RS-422 In
18
+RXD
19
+RS-422 Out
20
DTR out
21
-RS-422 Out
22
23
24
-RXD 25
Signals on the printer's
communication port "uart1:"
IMPORTANT!
Appendix 4
GNDC
1
GNDC
2 TXD out
3
RXD in
4 RTS out
5 CTS in
6 DSR in
7 GNDI
8
+20 mA CL 1
9
10 -20 mA CL 1
11 +TXD
-TXD
12
13 +20 mA CL 2
GNDC
137