Pzem-004t 4.0 110V/220V Single-Phase AC Power Meter 10A/32A/63A/100A Ttl AMP Voltmeter Analyzer Modbus Energi Kwh Energy Monitoring

Product Description

PZEM-004T 4.0 Power Meter 110V/220V 10A/32A/63A/100A TTL AC Single Phase Amp Voltmeter Analyzer Modbus Energi Meter Power Kwh Energy Monitoring

This document describes the specification of the PZEM-004T AC communication module, the module is mainly used for measuring AC voltage, current, active power, frequency, power factor and active energy, the module is without display function, the data is read through theTTL interface.

Product Type	PZEM-004T 4.0v
Function	This module is mainly used for measuring AC voltage, current, active power, frequency, power factor and active energy,without display, the data is read through the TTL interface.
Voltage Range	AC 80-260V
Current Range	10A(only host) 32A/100A(with split CT) 32A/63A/100A(with coil CT)
Active Power	0-23KW
Energy Range	Energy Range
Power Factor	0.00~1.00
Frequency	45Hz~65Hz
Weight	133g
Communication Port	TTL interface
Physical layer protocol	Baud rate is 9600, 8 data bits, 1 stop bit, no parity

1. Communication protocol 
   1. Physical layer protocol

Physical layer use UART to RS485 communication interface
Baud rate is 9600, 8 data bits, 1 stop bit, no parity

1. 1. 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.

1. 1.  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)

1. 0x01,Illegal function
2. 0x02,Illegal address
3. 0x03,Illegal data
4. 0x04,Slave error

FAQ
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?
 
    T/T, ****** trade assurance etc,we can talk all the possibilities.

Q: Is your product in good quality?