Modbus/TCP – Diagnostics 111
0x71 Parameter group
ended
An attempt to write to multiple
parameter groups
0x72 MSB is not zero An attempt to write a 16-bit
parameter with a 32-register
address and the MSB bytes are
not zero
0x73 LSB query start An attempt to access only the
LSB register of the 32-bit
parameter
0x74 MSB query end An attempt to access only the
MSB register of the 32-bit
parameter
Error code Description Situation