Intermec EasyCoder 501 XP Installation & Operation Manual page 114

Double Serial
Interface Board,
cont'd.
Intermec EasyCoder 501 XP – Installation & Operation Ed. 4
"uart3:" Serial Port
The communication ports "uart3:" uses a male DB 25 connector.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
"uart3:"
14
15
16
17
18
19
20
21
22
23
24
25
1
/. The external 5V is automatically turned off at overload.
Signal Name Description
Not connected
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
GND 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)
+RS422I +RS 422 Receive
+5V 5 Volt for external use (max. 200 mA)
-RS422I -RS 422 Receive
+RxD +TXD 20 mA current loop
+RS422O/+RS485 +RS 422 Transmit/+RS 485
DTR RS 232 Data Terminal Ready
-RS422O/-RS485 -RS 422 Transmit/-RS 485
RI RS 232 Ring Indicator
Shield Optional shield for RS 422 and RS 485
Not connected
-RxD -TXD 20 mA current loop
Appendix 3 Interfaces
1
113