Hello all,
I have a MPPT 100/50 controller
I want to use the HEX protocol to talk to the controller
I always get
Invalid frame (checksum wrong)
:452
:4AAAAFD
Error response
here are the 2 messages I send:
1st one:
0x3A-0x34-0x51-0x0A
2nd one:
0x3A-0x33-0x52-0x0A
can you please tell me where I am wrong?
thanks very much
best regards
Kurt