4 MODBUS RTU Protocol
6
FY400/600/700/800/900 COMMUNICATION MANUAL
Response from slave controller in abnormal status (Assumed as illegal data value)
ID Number
(01H)
Function Code
(86H)
Error Code
(03H)
CRC
(0261H)
1 is set to the MSB of function code in abnormal status (86H).
The abnormal code (03H) is returned as contents of error.
4.7.3
Setting (Set SV = 10.0 and OUTL=100.0 to slave controller 1)
Request message from master instrument:
ID
Number
(01H)
Function
Code
(10H)
Register
Address
(0000H)
Data
Count
(0002H)
Byte
Count
(04H)
Data1
(0064H)
Data2
(03E8H)
CRC
(B2CEH)
Response message from slave controller in normal status (When SV = 10.0 and
OUTL=100.0)
ID
Number
(01H)
Function
Code
(10H)
Register
Address
(0000H)
Data
Count
(0002H)
CRC
(41C8H)
Response from slave controller in abnormal status (Assumed as illegal register
address)
ID Number
(01H)
Function Code
(90H)
Error Code
(02H)
CRC
(C001H)
1 is set to the MSB of function code in abnormal status (90H).
The abnormal code (02H) is returned as contents of error.
