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Pin assignment of 7188EX:
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
User define pin 10
11
User define pin 11
12
User define pin 12
13
User define pin 13
14
User define pin 14
15
User define pin 15
16
User define pin 16
17
User define pin 17
18
User define pin 18
19
User define pin 19
20
User define pin 20
21
User define pin 21
22
User define pin 22
23
User define pin 23
E1: 10BaseT connector
Note:
1. The 7188EX/7188EXD is designed to add an X???? to I/O Expansion Bus.
2. The GND-signal of Com1 is shared with pin-9, GND.
3. Refer to Sec. 5.2 7188E1 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 ----- 72