GE Industrial Solutions Entellisys 4.0 Integrator's Guide - Manual (Page 31)

Supported function codes 31
2
Master and Slave Device Packet Transmission Example
MASTER TRANSMISSION
PACKET FORMAT EXAMPLE (HEX)
SLAVE ADDRESS 11
FUNCTION CODE 04
DATA STARTING ADDR - hi 40
DATA STARTING ADDR - lo 50
NUMBER OF REGISTERS - hi 00
NUMBER OF REGISTERS - lo 03
CRC - lo A7 DATA #2 - lo A7
CRC - hi 4A DATA #3 - hi 4A
SLAVE RESPONSE
PACKET FORMAT EXAMPLE (HEX)
SLAVE ADDRESS 11
FUNCTION CODE 04
BYTE COUNT 06
DATA #1 - hi 00
DATA #1 - lo 28
DATA #2 - hi 01
DATA #2 - lo 2C
DATA #3 - hi 00
DATA #3 - lo 00
CRC - lo 0D
CRC - hi 60