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Connecting a keyboard cable
KEYBOARD
1
2
3
4
5
6
7
8
9
10 11 12
13 14
Pin No.
1
Power
supply
2
On/Off
3
GND
4
Unused
5
6
7
Data
8
Unused
9
Data
10
Unused
11
+12V
12
13
GND
14
Appearance of connection cable
Cable length: 5m
Connector diameter: 25mm
or less
Cable diameter: 8mm or less
Keyboard cable: Install in NCH-748
Name
SW1
Signal for turning on/off the power supply
SW2
Processing unit Operation unit
TXD232
Processing unit Operation unit
RXD232
Power supplied from the processing unit to the
operation unit
3-9
Description
Section 3 Installation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
付録
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