Intermec EasyCoder 601 XP Service Manual page 133

Chapter 16 Interfaces
16.6 Double Serial
Interface Board, cont'd.
132
Connector Configuration
The serial interface for "uart3:" uses a male DB 25 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/+RS 485
20 DTR
21 -RS422O/-RS485
22 RI
23 Shield
24
25 -RxD
1
/. The external 5V is automatically turned off at overload.
1-971613-25 Double Serial Interface pcb.: Components
UART3
F32 R35
F24
RP2
F20
F23
P4
F31
IC14
F34
F15
F16
F17
F18
F25 IC13
F19
F21
F26
F28
F22
IC12
F27
F29
F33
F30
RS232: IC2
RS485: IC4, S3, S4*
RS422isolated: IC3, S2, S4
UART2
RS422nonisol.: IC18, S1,S4
* Term. if end of cable
R11
F10
F11
R6
R7
F12
F13
R4
F14
R5
F9
F8
F6 R10
F5
JP2
F4 S4
F3
IC4
F7
F2
F1
P3
Intermec EasyCoder 601 XP – Service Manual Ed. 3
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 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
-TXD 20 mA current loop
RS232: IC11
RS422nonisol.: IC12, S5
20mA CL: IC13, IC14, S6
R30
C8
R20
IC10
R21
IC11
R23
R22
S5
S6
R3
R2
IC7
R1
C3
R15
+
+
+
IC18
+
IC2
S3
IC3
S2
S1
C11
1
1-971613-00.A01
P2
C10
C7
C2
IC1
C1
R13
R12
R14
R8
IC5
IC6
P1