jonHar
Hi.
I sniffer the data that OpenPLC sends to a slave of digital 8 inputs with address 1 with Modbus RTU, and there are some bytes that I don't know its function?
plot captured:
DI-> 001 002 000 000 000 008 121 204
byte 0->address
byte 1->function
byte 2, 3 and 4 ->know its function
byte 5 size
byte 6 and 7 CRC
Quote 0 0
thiagoralves
http://www.simplymodbus.ca/FAQ.htm

http://www.simplymodbus.ca/FC02.htm
Quote 0 0
jonHar
Thanks Thiagor 😊
Quote 0 0