5 MODBUS ASCII Protocol
FY400/600/700/800/900 COMMUNICATION MANUAL
9
Response from slave controller in abnormal status (Assumed as illegal data value)
Header
(3AH)
ID Number
(30H 31H)
Function
Code
(38H 36H)
Error Code
(30H 33H)
LRC
(37H 36H)
Delimiter
(0DH 0AH)
1 is set to the MSB of function code in abnormal status (86H).
The abnormal code (03H) is returned as contents of error.
5.7.2
Setting (Set SV = 10.0 and OUTL=100.0 to slave controller 1)
Request message from master instrument:
Header
(3AH)
ID Number
(30H 31H)
Function
Code
(31H 30H)
Register Address
(30H 30H 30H 30H)
Data Count
(30H 30H 30H 32H)
BYTE
Count
(30H 34H)
Data1
(30H 30H 36H 34H)
Data2
(30H 33H 45H 38H)
LRC
(39H 41H)
Delimiter
(0DH 0AH)
Response message from slave controller in normal status (When SV = 10.0 and
OUTL=100.0)
Header
(3AH)
ID Number
(30H 31H)
Function
Code
(31H 30H)
Register Address
(30H 30H 30H 30H)
Data Count
(30H 30H 30H 32H)
LRC
(45H 44H)
Delimiter
(0DH 0AH)
Response from slave controller in abnormal status (Assumed as illegal register
address)
Header
(3AH)
ID Number
(30H 31H)
Function
Code
(39H 30H)
Error Code
(30H 32H)
LRC
(36H 44H)
Delimiter
(0DH 0AH)
