Intermec EasyCoder 501 E Installation & Operation Manual page 146

Serial Interface
Board, cont.
"uart3:"
Intermec EasyCoder 501 E – Installation & Operation Ed. 1
"uart3:" Serial Port
The communication port "uart3:" uses a DB-25pin male connector.
Pin
1
2
3
4
0
5
230V
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21–24
25
1
/. Enabled by a strap being fi tted on P-6.
2
/. DTR permanently high.
Refer to the installation instructions for the Serial Interface Board
for further information.
Signal Name Description
GNDC Cable Shield
TXD RS-232 Transmitter
RXD RS-232 Receiver
RTS RS-232 Request To Send
CTS RS-232 Clear To Send
DSR RS-232 Data Set Ready
GNDI Signal Ground
Not connected
+20M1 +20 mA current loop
-20M1 -20 mA current loop
+TXD +TXD 20 mA current loop
-TXD -TXD 20 mA current loop
+20M2 +20 mA current loop
(printer active receiver)
-20M2 -20 mA current loop
(printer active receiver)
Not connected
+5VEXT 5 VDC for external use (max. 200 mA)
Not connected
+RxD +TXD 20 mA current loop
Not connected
DTR RS-232 Data Terminal Ready
Not connected
-RxD -TXD 20 mA current loop
Appendix 4 Interfaces
1
2
145