hi … i just buy a mppt solar charge controler from ivt . that controler have a serial port to be remote read it … i have the comunication protocol … can anybody help me with a very simple script for rb433ah?
Electrical specification
Pin description (RJ/12)
6.GND
5.GND
4.RX (open collector input)
3.TX (open collector output)
2.+12V
1.+12V
USART serial port: 9600 bit/s, 1 start bit, 8 data bit ,1 stop bit
Read data from Solar charger:
Send data to charger: ASCII (“R”) - minimal repetition time 500 ms
Response:
- byte ASCII (“D”)
- byte BIN (U_batt_H)
- byte BIN (U_batt_L)
- byte BIN (I_batt_H)
- byte BIN (I_batt_L)
- byte BIN (U_solar_H)
- byte BIN (U_solar_L)
- byte BIN (1)
- byte BIN(0)
- byte BIN(0)
- byte BIN(0)
- byte BIN(0)
- byte BIN(0)
- byte BIN(0)
- byte BIN(0)
- byte ASCII (“O”) - solar voltage OK
ASCII (“S”) - solar voltage low