PEZM-003 DC 0-10A 0-300V Electric Solar Power Meter With RS485 Modbus

1.   Function description

1.1   Voltage

1.1.1   Measuring range:0.05-300V. (when the test voltage is <7V, please use the independent power supply mode)  

1.1.2   Resolution:0.01V.

1.1.3   Measurement accuracy:1%.

1.2   Current

1.2.1   Measuring range:0.01-10A(PZEM-003);0.02-300A(PZEM-017;can be matched with 50,100,200,300A four kinds of shunt).

1.2.2   Resolution:0.01A

1.2.3   Measurement accuracy:1%

1.3   Power

1.3.1   Measuring range:0.1-3kW(PZEM-003);0.2-90kW(PZEM-017)

1.3.2   Resolution: 0.1W

1.3.3   Measurement accuracy:1%

1.4   Energy Consumption

1.4.1   Measuring range: 0-9999kWh

1.4.2   Resolution: 1Wh

1.4.3   Measurement accuracy:1%

1.4.4   Reset energy: use software to reset.

1.5 Over Voltage alarm

Voltage threshold can be set, divide into high voltage and low voltage threshold, when the measured voltage exceeds the threshold, it can alarm

The default high voltage threshold is 300V, the default low voltage threshold is 7V.

1.6 Communication interface

RS485 interface.

2.Communication protocol

2.1 Physical layer protocol

Physical layer use UART to RS485 communication interface.

Baud rate is 9600, 8 data bits, 2 stop bit, no parity.

2.2 Application layer protocol

The application layer use the Modbus-RTU protocol to communicate. At present, it only supports function codes such as 0x03 (Read Holding Register), 0x04 (Read Input Register), 0x06 (Write Single Register), 0x41 (Calibration), 0x42 (Reset energy).etc.

0x41 function code is only for internal use (address can be only 0xF8), used for factory calibration and return to factory maintenance occasions, after the function code to increase 16-bit password, the default password is 0x3721.

The address range of the slave is 0x01 ~ 0xF7. The address 0x00 is used as the broadcast address, the slave does not need to reply the master. The address 0xF8 is used as the general address, this address can be only used in single-slave environment and can be used for calibration etc.operation.

2.3 Read the measurement result

The command format of the master reads the measurement result is(total of 8 bytes):

Slave Address + 0x04 + Register Address High Byte + Register Address Low Byte + Number of Registers High Byte + Number of Registers Low Byte + CRC Check High Byte + CRC Check Low Byte.

The command format of the reply from the slave is divided into two kinds:

Correct Reply: Slave Address + 0x04 + Number of Bytes + Register 1 Data High Byte + Register 1 Data Low Byte + ... + CRC Check High Byte + CRC Check Low Byte

Error Reply: Slave address + 0x84 + Abnormal code + CRC check high byte + CRC check low byte

Abnormal code analyzed as following (the same below)

l  0x01,Illegal function;

l  0x02,Illegal address;

l  0x03,Illegal data;

l  0x04,Slave error

The register of the measurement results is arranged as the following table

Q: Can I get better price?
A: Prices are different for different order quantity and specific demands. We would like to offer you very good price to help you enlarge

    the market share.

Q: Are factory or only company?
A: We are factory of AC DC digital panel meter .

Q: How about the shipping cost?
A: If your goods is small for LCL, we can send goods to you via counier, such as FEDEX,TNT,there is good rate from our side.
    If your goods is FCL, it need be sent via sea, we can send you frieght quotations DDU or FOB,CIF, you can choose whether use our

    forwarder or yours.

Q: How about the sample time? What is the payment?
A: You can come to my official store in aliexpress to place the sample order, we will ship it out with in 3-5 days after the payment.
    T/T,30% deposit, 70% against bill of lading copy, LC at sight, alibaba trade assurance etc,we can talk all the possibilities.

Q: Is your product in good quality?
A: The quality is depended on the price.And it is better to purchase the sample to test the quality first,then place an order.

Q: Could you make OEM with our logo?
A: Yeah,we have factory to produce the goods to you with your own logo..It depend on your quantity.

Q: Why do I choose you?
A: 1): Reliable---we are the real company, we dedicate in win-win
    2): Professional---we offer the newest digital panel meter.
    3): Factory---we are the manufacturer, so we have the Stable product source,reliable technical support and reasonable price

Q: Where is your Loading Port?
A: Ningbo,China
    Shanghai, China
    Other China port is accepted.

Q: How to control Quality of Mass?
A: We have our own QC Team (5 workers). Every step of mass production will be inspected in time.

Q: How long will you guarantee the mass quality?
A: We will be responsible for our mass even the mass are in your warehouse. We Trust our Quality.
    Almost more than 95% clients will cooperated with us for long time from 1st order.

Q: Is there any tracking Number for my order?
A: Yes, after we ship the cargo, we will provide the tracking number for your order to you, and
    you can view the shipment status on the corresponding shipping company website.

Q: Do you offer retail service?
A: Yes, we have an official store on aliexpress, If you need retail service you can come here.

Q: Can we visit your factory?
A: Sure, our factory is in Ningbo. Pls let us know when you come, we will pick up you at airport.