Operating Manual

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7. External interface specification
7.1. External connector
Signal lines of the connector connected to the construction machine are shown.
Table 7.1 Signal line chart
IT side
Terminal
number
Pin name Remarks
1 Power supply External power input 10V to 32V
2 Earth Ground
3 Hour meter
signal
Hour meter signal 0 V to 32 V
Non-operation: Less than 4 V (typ), Operation: 4 V (typ)
or more(Threshold 3.32 V (min) to 4.77 V (max))）
4 Serial RxD RS232C Input signal (to this equipment)
5 Serial TxD RS232C Output signal (from this equipment)
Hour
meter
signal
GND
Power
supply
Cavity
plug
Serial
RxD
Serial
TxD
Excavator
Side
1
2
3
5 4
Blue/Black
Blue/Red
Red
Black
Power
supply
GND
Hour
meter
signal
Cavity
plug
Serial
RxD
Serial
TxD
ＩＴ
Side
Green/Yellow
※The colors in squares indicates the wire color
Figure 7.1 Connector Pin Assign