Intermec EasyCoder 501 XP Service Manual page 121

Chapter 16 Interfaces
16.5 Industrial Inter-
face Board, cont.
No circuit on IC2
Fit RS-485 circuit on IC4
Fit strap on S4
if end of cable
Fit strap on S3 only
120
RS-485
IC15
R26
R30
R31
IC14
R33
REL1 REL2
P4
R50
F10
F11
R6
F12
R7
F13
F14
R4
F9
R5
F8
R51
F6
F5
F4 S4
F3
F7
F2
F1
P3
Connector Confi guration
The serial interface for "uart2:" uses a female DB-25pin connec-
tor.
Pin Signal Name
1
2 TxD
3 RxD
4 RTS
5 CTS
6 DSR
7 GND
8–14
15 +RS422I
16 +5V
17 -RS422I
18
19 +RS422O/+RS485
20 DTR
21 -RS422O/-RS485
22 RI
23 Shield
24–25
Intermec EasyCoder 501 XP – Service Manual Ed. 4
IC16
IC8
R34
IC10
IC13
R35
R36
R37
R38
R39
R40
R41
REL3 REL4
IC12
IC7
R3
R2
R1
C3
R55
+
+
+
+
IC18
S3
C11
S2
IC4 IC3 S1
IC2
RP1
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
+RS-422 Receive
5 Volt for external use (max. 200 mA)
-RS-422 Receive
Not connected
+RS-422 Transmit/+RS-485
RS-232 Data Terminal Ready
-RS-422 Transmit/-RS-485
RS 232 Ring Indicator
Optional shield for RS-422 and RS-485
Not connected
1-971606-01.P01
IC17
IC9
IC11
P2
C10
C7
C2
C1
R53
R56
R54
R8
IC6
C5
IC5
P1
1