Komatsu ecot3 PC300LC-8 Shop Manual page 296

SEN01998-05
Input and output signals
CN-CM01
Pin No. Signal name
Battery power (+24V con-
1
stantly)
Battery power (+24V con-
2
stantly)
3 Battery power GND
4 Battery power GND
5 Wake-up
6 Relay output
7 —
8 NC(*)
9 Fuel level
10 NC(*)
11 Charge amount
12 Chassis analog signal GND
13 Light switch
14 Key switch (ACC)
15 Key switch (C)
16 Preheating
17 NC(*)
18 NC(*)
*: Never connect to NC or malfunctions or failures
will occur.
CN-CM02
Pin No. Signal name
1 NC(*)
2 Engine oil level sensor
3 Coolant level sensor
4 Air cleaner clogging sensor
5 Swing lock
6 NC(*)
7 NC(*)
8 CAN terminating resistance
9 CAN_H
10 CAN_L
11 NC(*)
12 NC(*)
*: Never connect to NC or malfunctions or failures
will occur.
38
10 Structure, function and maintenance standard
CN-CM03
Pin No.
Input/
1
output
Input
2
Input
3
—
4
—
Input/
5
Output
Output
6
—
—
7
Input
—
8
Input
—
9
Input
Input
10
Input
Input 11
—
12
—
13
14
Input/
15
output
—
16
Input
Input
17
Input
Input
18
—
—
—
CN-CM04
Input/
Output
Pin No.
Input/
1
Output
2
Input/
Output
3
Input/
4
Output
5
6
7
8
9
10
11
12
*: Never connect to NC or malfunctions or failures
will occur.
Signal name
RS232C CD for communica-
tion terminal
RS232C RXD for communica-
tion terminal
RS232C SG for communica-
tion terminal
Signal GND for communication
terminal control
Communication terminal selec-
tion signal
RS232C RTS for communica-
tion terminal
RS232C TXD for communica-
tion terminal
RS232C DTR for communica-
tion terminal
RS232C DSR for communica-
tion terminal
RS232C CTS for communica-
tion terminal
RS232C RI for communication
terminal
Power GND for communication
terminal
Input CH1 for communication
terminal status
Output for communication ter-
minal power control
Output CH1 for communication
terminal control
Output CH2 for communication
terminal control
Input CH2 for communication
terminal status
Electric power supply for com-
munication terminal
Signal name
NC(*)
NC(*)
NC(*)
NC(*)
NC(*)
NC(*)
NC(*)
NC(*)
NC(*)
NC(*)
NC(*)
NC(*)
Input/
output
Input
Input
—
—
Input
Output
Output
Output
Input
Input
Input
—
Input
Output
Output
Output
Input
Output
Input/
output
—
—
—
—
—
—
—
—
—
—
—
—
PC300, 350-8