Intermec EasyCoder F4 Installation & Operation Manual page 109

Appendix 3 Interfaces
Double Serial
Interface Board,
cont.
108
"uart3:" Serial Port
The communication ports "uart3:" uses a DB-25pin male connec-
tor.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
"uart3:"
15
16
17
18
19
20
21
22
23
24
25
1
/. The external 5V is automatically switched 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 +RS-422 Transmit
DTR RS 232 Data Terminal Ready
-RS422O -RS-422 Transmit
RI RS-232 Ring Indicator
Shield Optional shield for RS-422
Not connected
-RxD -TXD 20 mA current loop
Intermec EasyCoder F4 – Installation & Operation Ed. 3
1