Hi,
i'm back. I tried and tried a lot of codes a none of them worked.
So what i have done is to connect my raspberry to the MR-J4-40A-RJ through an RS232 to RS485 converter, the UC-232A (this one https://www.aten.com/it/it/products/sol ... ri/uc232a/ ). Then this UC-232A is connected to my SC-FRPC cable (this one https://mitsubishi-electric-eshop.mee.c ... 0000088426 ) that is connected to the Mitsubishi.
I tried again with some code but i still can't get something work. Looking at this sliced documentation (attached to this reply, i had to place it in a zip file) at the page 6, it makes an example of how to make a package communication to get the first alarm in the alarm history.
So i tried this but still doesn't work because it prints a null value, meanwhile in the alarm history there are some allarms:
i'm back. I tried and tried a lot of codes a none of them worked.
So what i have done is to connect my raspberry to the MR-J4-40A-RJ through an RS232 to RS485 converter, the UC-232A (this one https://www.aten.com/it/it/products/sol ... ri/uc232a/ ). Then this UC-232A is connected to my SC-FRPC cable (this one https://mitsubishi-electric-eshop.mee.c ... 0000088426 ) that is connected to the Mitsubishi.
I tried again with some code but i still can't get something work. Looking at this sliced documentation (attached to this reply, i had to place it in a zip file) at the page 6, it makes an example of how to make a package communication to get the first alarm in the alarm history.
So i tried this but still doesn't work because it prints a null value, meanwhile in the alarm history there are some allarms:
Code:
import serial# Create a serial objectser = serial.Serial( port='COM7', # Replace with your port baudrate=115200, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_TWO, bytesize=serial.EIGHTBITS, timeout=1)# Define control charactersSTX = '\x02' # Start of TextETX = '\x03' # End of TextSOH = '\x01' # Start of HeaderEOT = '\x04'# Define command componentsstation_no = '00' # Station numbercommand = '33' # Command codedata_no = '10' # Data number# Construct commandcommand_to_send = station_no + command + STX + data_no + ETX# Calculate checksumchecksum = sum(bytearray(command_to_send, 'utf-8')) & 0xFF# Add checksum to commandcommand_to_send += '{:02X}'.format(checksum)command_to_send = SOH + command_to_send + EOT# Send commandser.write(command_to_send.encode())# Receive responseresponse = ser.readall()print(response)Statistics: Posted by Tiziano Faver — Tue Jun 04, 2024 9:40 am