Intermec EasyCoder 501 XP Service Manual page 134

16.6 Double Serial
Interface Board, cont.
Intermec EasyCoder 501 XP – Service Manual Ed. 4
Connector Confi guration
The serial interface "uart3:" has a DB-25pin male connector.
Pin Signal Name
1
2 TxD
3 RxD
4 RTS
5 CTS
6 DSR
7 GND
8
9 +20M1
10 -20M1
11 +TXD
12 -TXD
13 +20M2
14 -20M2
15 +RS422I
16 +5V
17 -RS422I
18 +RxD
19 +RS422O
20 DTR
21 -RS422O
22 RI
23 Shield
24
25 -RxD
1
/. The external 5V is automatically switched off at overload.
Chapter 16 Interfaces
Description
Not connected
RS-232 Transmitter
RS-232 Receiver
RS-232 Request To Send
RS-232 Clear To Send
RS-232 Data Set Ready
Ground
Not connected
+20 mA current loop
-20 mA current loop
+TXD 20 mA current loop
-TXD 20 mA current loop
+20 mA current loop (printer active receiver)
-20 mA current loop (printer active receiver)
+RS-422 Receive
5 Volt for external use (max. 200 mA)
-RS-422 Receive
+TXD 20 mA current loop
+RS-422 Transmit
RS-232 Data Terminal Ready
-RS-422 Transmit
RS-232 Ring Indicator
Optional shield for RS 422
Not connected
-TXD 20 mA current loop
1
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