Version description: The product name classification indicates the maximum peak range that can be measured. The MODBUS version has an RS485 communication interface. You can use the host computer software to collect data, or you can communicate with PLC, DCS, smart meters and other devices Other than that, the other functions are the same
Calibration instructions: The meter has a calibration function, don&x27;t worry about the inaccurate measurement display, if you find that the display is inaccurate, you can use the following methods to calibrate. After receiving the baby, it is recommended to perform a calibration according to the following method
Calibration method: first use the multimeter to measure the exact value of the measured voltage, and then connect the measured voltage to the meter head, press both buttons at the same time to enter the calibration mode, add the key minus key to adjust the display voltage to match the voltage measured by the multimeter That is, for example: if the multimeter measures 12.65V, you can adjust the displayed voltage to 12.65V by pressing the button, and automatically save and exit after three seconds.
Measurement description: Please read it The measurement voltage can be set to independent power supply and non-independent power supply mode. There is a black jumper cap on the module. Plug in to indicate non-independent power supply, and unplug to indicate independent power supply The wiring method is different, please understand the wiring and then start We are not responsible for burning the wrong wire Non-independent power supply means that the module supply voltage is the measured voltage (5-30V). Independent power supply means that the module power supply and the measured voltage are separated. At this time, the module supply voltage is 5-24V, and the maximum voltage measured is the purchased voltage Value (standard 30V is 0-30V, 100V is 0-100V), Note: 10A100V version can only use the independent power connection method
Product parameters:
◆ Simultaneous measurement of voltage, current and ambient temperature
◆Voltage range: 0-100V
◆Current range: 0-10A (please strengthen the heat dissipation when the high current temperature exceeds 60 degrees)
◆Temperature range: -10-100 degrees (accuracy 1%)
◆Accuracy: 1% (±1 digit, the greater the voltage and current range, the lower the accuracy)
◆Support standard Modbus RTU protocol, communication mode RS485
◆ Voltage and temperature are switched to display (the display voltage and temperature can be switched by pressing the back button)
◆ With protocol function, 1-255 device addresses can be set, which can be set through the host computer software;
◆ Product size: 47.8*28.8*30MM
◆Installation opening: 45*25.5MM
◆ Weight: 24G
Interface Description:
◆Mark A and B terminals as RS485 interface, used for Modbus communication
◆ Negative voltage of GND, negative electrode of current load measured by IIN, positive power supply under test when VCC is not independent power supply, positive power supply for module when independent power supply, VIN positive positive voltage under test and positive load.
Wiring diagram for measuring voltage and current:
Wiring diagram for non-independent power supply:
Independent power supply wiring diagram:
Modbus test instructions:
1. Connect the hardware
Connect the RS485 serial port, A connects to A, B connects to B, and connect the measured voltage.
2. Software settings:
Set the serial port number in "Communication Settings" and open the serial port.
Set the module address in the "Analog Collection" item (the default address is "1". If the module address is not clear, you can change the module address in the "Module Address Change" item)
Click "Acquire" command in "Analog Collection".
If a "communication error" occurs, confirm whether the A and B terminals of the RS485 interface are reversed.