Huawei PLC CCO01A User Manual page 28

PLC CCO01A
User Manual
Figure 4-5 Connector
Table 4-3 Pin definitions
No.
1
2
3
4
5
6
7
8
Procedure
Step 1 Connect the RS485 communications cable to the PLC CCO, as shown in
Issue 02 (2016-01-10)
Pin Definition
Reserved
Reserved
12 Vin, power
RS485+, RS485 differential
signal +
RS485-, RS485 differential
signal -
Reserved
Reserved
PGND

The PLC CCO supports only the Modbus RTU protocol.

Connect the RS485 communications cable to A4 (RS485+) and B4 (RS485-) on X2 terminal block.

Ensure that the RS485 communications cable is securely and reliably connected.
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4 Electrical Connections
Description
N/A
N/A
N/A
Connects to the COM + port on
the SmartLogger1000 through
the A4 wiring terminal.
Connects to the COM - port on
the SmartLogger1000 through
the B4 wiring terminal.
N/A
N/A
N/A
Figure 4-6.
22