[Device] OpcUa Extender Server fetch Power meter PM-3133

[OpcUa Support]

Description:
Using the OpcUa Extender server to fetch information from the Power meter via the Modbus RTU interface and display it on UaExpert.
OpcUa Extender server serves as an OpcUa server, fetching information from power meter and transfer it to client UaExpert.
System block:

Power meter_OpcUa Extender Server_UaExpert.png (54.19 KiB) Viewed 1055 times

Environment:

• Power meter: PM-3133-100P
• RS485 to USB adapter
• Working machine: NIFE-105

System architecture:

硬體配置圖.png (85.68 KiB) Viewed 1055 times

Operating step:
Step1:
Hardware connection:
Install clip-on CT onto the power cable, and according to the user manual, connect the L and N terminals of the power meter in parallel with the corresponding terminals of the cable(1P2W-1CT).

power meter wiring.png (22.5 KiB) Viewed 1055 times

Also connect PM-3133 to working machine NIFE-105 with USB to RS485 adapter.

Step2:
OpcUa Extender Server setting:
Look up the registers for voltage, current and power in the user manual, and configure the register addresses in the OpcUa Extender Server.

Modbus register of PM3133:

Register.png (54.73 KiB) Viewed 1055 times

Configuration of OpcUa Extender Server:

Code: Select all

Va	Va	Powermeter_Rtu	FLOAT		34353	1
Ia	Ia	Powermeter_Rtu	FLOAT		34355	1
kWa	kWa	Powermeter_Rtu	FLOAT		34357	1

Upload the configuration .csv file to OpcUa Extender Server:

OpcUa Ext add modbus RTU_config file.png (47.2 KiB) Viewed 1055 times

We will obtain the float format values for voltage, current, and power from addresses 34353, 34355, and 34357 respectively.

Step3:
UaExpert connect to OpcUa Extender Server:

UaExpert connect to OpcUa Ext server.png (21.12 KiB) Viewed 1055 times

The values for voltage, current, and power can be found under the path 'Protocols > ModbusRtu':

UaExpert Protocol Modbus Rtu.png (7.3 KiB) Viewed 1055 times