mcspr
commented
5 years ago Closing per https://gitter.im/tinkerman-cat/espurna?at=5d4c8a56c87a0963e737b876 The board in question is PZEM004T V3.0, which is not supported by the library used here: https://github.com/olehs/PZEM004T
However, there is working example of how to talk to the new board: https://github.com/mandulaj/PZEM-004T-v30 https://innovatorsguru.com/pzem-004t-v3/ https://innovatorsguru.com/wp-content/uploads/2019/06/PZEM-004T-V3.0-Datasheet-User-Manual.pdf Since I am not familiar with modbus thing used there, it is unclear how to use this with multiple PZEMs
And https://github.com/xoseperez/espurna/wiki/Sensor-PZEM004T would need a note that it is only applicable to the old V1 board
Hello,
I flashed the espurna firmware on a wemos d1 mini pro, everything according to instructions in the Sensor.h changed so:
ifndef PZEM004T_SUPPORT
define PZEM004T_SUPPORT 0
endif
ifndef PZEM004T_USE_SOFT
define PZEM004T_USE_SOFT 0 // Software serial is not working atm, use hardware serial
endif
ifndef PZEM004T_RX_PIN
define PZEM004T_RX_PIN 13 // Software serial RX GPIO (if PZEM004T_USE_SOFT == 1)
endif
ifndef PZEM004T_TX_PIN
define PZEM004T_TX_PIN 15 // Software serial TX GPIO (if PZEM004T_USE_SOFT == 1)
endif
ifndef PZEM004T_HW_PORT
define PZEM004T_HW_PORT Serial // Hardware serial port (if PZEM004T_USE_SOFT == 0)
endif
ifndef PZEM004T_ADDRESSES
define PZEM004T_ADDRESSES "1.1.1.1 2.2.2.2 3.3.3.3" // Device(s) address(es), separated by space, "192.168.1.1 192.168.1.2 192.168.1.3"
endif
ifndef PZEM004T_READ_INTERVAL
define PZEM004T_READ_INTERVAL 1500 // Read interval between same device
endif
ifndef PZEM004T_MAX_DEVICES
define PZEM004T_MAX_DEVICES 3
endif
I have now according to instructions soldered the BAT diodes and resistance to circuit diagram, because I later want to have 3 PZEM004T in a bus. TX from Wemos to RX PZEM004t, RX from Wemos to TX PZEM and ground to ground.
Now this error comes and I can not assign a pzem004t address.
[039629] [WEBSOCKET] Requested action: dbgcmd [040319] [SENSOR] PZEM004T [040323] Device 0/1.1.1.1 [040325] Device 1/2.2.2.2 [040329] Device 2/3.3.3.3 [040331] +OK [045859] [SENSOR] Error reading data from PZEM004T @ HwSerial (error: 3)Can someone help me ?