IAI America ROBO Cylinder Series - Manual (Page 312)

7. T
roubleshooting
304
Modbus
Example) Query function code “02
H
” (00000010b)
o Exception response function code “82
H
” (10000010b)
„ Exception codes
The table below lists the exception codes that may generate in RC Series controllers, as well as the
contents of respective codes.
Code
[Hex]
Exception code Function Remarks
01
H
Illegal Function Indicates that the function is invalid. The query cannot be executed
because a major error has
occurred on the slave side due to
function errors.
02
H
Illegal Data Address Indicates that the data address is
invalid.
Use of the data address value is
not permitted.
03
H
Illegal Data Value Indicates that the data is invalid. Use of the data value is not
permitted.
04
H
Slave Device Failure Indicates that the query cannot be
executed because an irremediable
error occurred in the slave.
The query cannot be executed
because a major error has
occurred on the slave side.