Features
- The power meter can communicate with the meter reader by carrier wave or wireless mode. The transmission is transparent and not be interfered by the user.
- The power meter (Modebus RTU) supports 485 interface, and it can work without the meter reader. The split core transformer is also provided for easy installation.
- Mode1 for meter reading: the carrier wave data are output by serial port (CH340). The meter reading is realized by reading serial port data through PC or Openwrt.
- Mode2 for meter reading: Built-in ESP12 module, which can be programmed directly, and through ESP12 to realize meter reading by carrier wave.
Sigle-phase power meter
Interface type：1 RS-485 interface；1 carrier wave；1 wireless
Communication protocol: MODBUS-RTU specifications;
Data format: 8, N, 1";
Power Meter MODBUS RTU Key Parameters
| Register | Description |
|---|---|
| 0048H （Read-only） | Voltage，Unsigned number，Value=DATA/100, Unit V |
| 0049H （Read-only） | Current，Unsigned number，Value=DATA/100,Unit A |
| 004AH （Read-only） | Active power，Unsigned number，Value=DATA，Unit W |
| 004BH-004CH（Read-only） | Forward active energy，Unsigned number，Value=DATA/3200，Unit kWh |
Test patyway &Protocols by 485
It is recommended to test 485 pathway and protocols by connecting the power meter with 485 and PC.
1 USB-485 dongle is needed, such as the one in the following picture.
Select the time zone
- Please select the power meter type and slaveID in the meter settings. Currently JSY-149 is supported or you can customize by yourself. Please just select JSY-149 if you use the power meter and the supporting reader.
Select the meter type
- If you use the power meter of other manufacturers, you can choose customize, and then set the settings according to the actual content of the register.
The custom meters need to be configured by yourself
Congratulations! If everything is OK, you can see the data on DeviceBit energy platform.
Congratulations!
Other working modes of meter reader
In addition to ZB-WIFI mode, there is also ZB-USB transparent transmission mode. This mode can be used to evaluate whether the carrier communication is successful or not. The ZB-USB working mode is as follows:
Step1：Plug the meter reader into a socket and adjust the jumper to mode 1 (ZB-USB, the middle position on the jumper picture above).
Note: the meter reader and the power meter can not be separated by transformer, and should be in phase (If the power meter is not three-phase, there is no need to consider this problem.)
ZB-USB Mode
Step 2：Connect Micro USB to PC
If you need to install the driver, install it by yourself (CP2102).
Then, open the serial port software, send data, and see the results as below.
Serial port software
The difference is the data are returned not as quickly as with 485 when click on Send, because carrier communication is very slow.
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