SCADAmetrics EtherMeter EM-100 - Page 55

53
Master (Request):
04 03 00 00 00 04 44 5C
EtherMeter (Response):
04 03 08 E0 F3 05 F5 00 9E 00 00 A4 F2
TARGET ADDRESS
FUNCTION CODE
STARTING REGISTER
ADDRESS – 40001
NUMBER OF 16-BIT
REGISTERS
CRC ERROR CHECK
TARGET ADDRESS
FUNCTION CODE
NUMBER OF DATA BYTES
1
ST
16-BIT UNSIGNED INT
2
ND
16-BIT UNSIGNED INT
3
RD
16-BIT UNSIGNED INT
4
TH
16-BIT UNSIGNED INT
CRC ERROR CHECK
Example MODBUS Request/Response.