Intermec EasyCoder 501 XP Service Manual page 154

Chapter 16 Interfaces
16.6 Double Serial
Interface Board, cont.
Remove RS-232 circuit on IC2
Fit RS-485 circuit on IC4
Fit strap on S4
if end of cable
Fit strap on S3 only
152
"uart2:" RS-485
F32
UART3
F24
RP2
IC14
F20
F23
F31
F34
F15
F16
F17
F18
F25
IC13
IC12
F33
F30
R27 R29
RS232: IC2
P4
RS485: IC4, S3, S4*
RS422isolated: IC3, S2, S4
UART2
RS422nonisol.: IC18, S1,S4
* Term. if end of cable
R11
F10
F11
R6
F12
R7
F13
F14
R4
F9
R5
F8
R10
F6
F5
F4 S4
F3
F7
F2
F1
P3
Connector Confi guration
The serial interface "uart2:" has a DB-25pin female connector.
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/+RS 485
20 DTR
21 -RS422O/-RS485
22 RI
23 Shield
24–25
1 /. The external 5V is automatically switched off at overload.
Intermec EasyCoder 501 XP & 601 XP – Service Manual
RS232: IC11
RS422nonisol.: IC12, S5
20mA CL: IC13, IC14, S6
R30 +
IC10
C8
+
+
R20
R21
R23
S5
R22
S6
IC11
IC15
IC7
R3
R2
R1
C3
R15
+
+
+
+
IC18
S3
C11
S2
IC4 IC3 S1
IC2
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
1-971613-00.A01
C10
P2
C7
C2
C1
R13
R12
R14
R8
IC6
C5
IC5
P1
1