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Pin assignment of 7188E4:
Pin Name
Description
1
CTS1
CTS pin of COM1 (RS-232)
2
RTS1
RTS pin of COM1 (RS-232)
3
RXD1
RXD pin of COM1(RS-232)
4
TXD1
TXD pin of COM1(RS-232)
5
INIT*
Initial pin for enable/disable AUTOEXEC.BAT
6
D2+
Data+ pin of COM2 (RS-485)
7
D2-
Data- pin of COM2 (RS-485)
8
VS+
V+ of power supply (+10 to +30VDC unregulated)
9
GND
GND of power supply
10 CTS3
CTS pin of COM3 (RS-232)
11 RTS3
RTS pin of COM3 (RS-232)
12 TXD3
TXD pin of COM3 (RS-232)
13 RXD3
RXD pin of COM3 (RS-232)
14 GND3
GND pin of COM3 (RS-232)
15 GND4
GND pin of COM4 (RS-232)
16 RXD4
RXD pin of COM4 (RS-232)
17 TXD4
TXD pin of COM4 (RS-232)
18 RTS4
RTS pin of COM4 (RS-232)
19 CTS4
CTS pin of COM4 (RS-232)
20 DSR4
DSR pin of COM4 (RS-232)
21 DTR4
DTR pin of COM4 (RS-232)
22 DCD4
DCD pin of COM4 (RS-232)
23 RI4
RI pin of COM4 (RS-232)
E1: 10BaseT connector
Note:
1. 7188E4/7188E4D does not support I/O Expansion Bus. So you cannot
install any X???? into 7188E4/7188E4D.
2. The GND-signal of COM1 is shared with pin-9, GND.
3. Refer to Sec. 5.2 for wire connection of CA0910 to PC & 7188E.
4. Refer to Sec. 5.5 for application wiring.
7188E Series Hardware User’s Manual, 2004, v2.2, 7MH-016-22 ----- 64