3 Peripheral Devices and Options
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124
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Terminal ID Terminal Name Function description Terminal Layout
CN9
+24V/
COM
External 24 VDC 
power supply
24 VDC power supply for 
the corresponding CANbus 
communication module
CAN2+/
CAN2-
CANbus 
communication 
terminal
CANbus communication between 
the GCB and the MCB of elevator 2 
in group control
CN8
+24V/
COM
External 24 VDC 
power supply
24 VDC power supply for 
the corresponding CANbus 
communication module
CAN3+/
CAN3-
CANbus 
communication 
terminal
CANbus communication between 
the GCB and the MCB of elevator 3 
in group control
CN10
+24V/
COM
External 24 VDC 
power supply
24 VDC power supply for 
the corresponding CANbus 
communication module
CAN4+/
CAN4-
CANbus 
communication 
terminal
CANbus communication between 
the GCB and the MCB of elevator 4 
in group control
3.3.6 I/O Expansion Board (MCTC-KZ-G1)
The expansion board (MCTC-KZ-G1) has one RS458 interface, one CANbus communi-
cation interface, ten DI and ten DO terminals. The expansion board is connected to the 
CAN1 bus of the control board via the CANbus interface to implement I/O terminal ex-
pansion. The CAN1 bus supports up to two expansion boards, one of which is placed 
in the equipment room and the other at the top of the car. The DIP switch on the 
expansion board is used to set an address. When all switches are OFF, this board is at 
the top of the car. When switch 1 is in 1 position, this board is in the equipment room. 
The terminals of the expansion board are allocated with functions in FD-11 to 50.
1  Appearance and dimensions
J11
CN1
J5
COM X10
X1
J12 J1
COM MOD+
MOD- M24
X9 X7 X5
X3 X1
X10 X8 X6
X4 X2
Y10 Y9 Y8 Y7
Y6 Y5 Y4 Y3
Y2 Y1
Y10
Y1
COM CAN+
CAN- M24
ON 
OFF
OFF
ON
485 CAN
J6
J7 J10
ON    OFF
J3
 
ON
1
2
 
ON
1
2
 
ON
1
2
K6
K5
K4
K3
K2
K1
J9
88
74
162
178
Φ3*4
Y6
...
YM1
...
YM2
...
S3
S2
S1
MCTC-KZ-G1
Appearance and dimensions of the MCTC-KZ-G1 (unit: mm)