User`s manual

108
FX3U Series Programmable Controllers
User’s Manual - MODBUS Serial Communication Edition
12 Troubleshooting
12.6 MODBUS Error Code List
0210
Invalid Device Address
The selected MODBUS Device Address or
the Device Address + Device Count exceeds
the supported range of this slave
Slave See above
Verify that the
MODBUS Device
Address Allocation of
the Slave is set
correctly.
Ensure master data is
in a valid range for a
selected command.
Confirm that the
master is accessing
valid device ranges.
0211
Communication Timeout
Timeout occurred after the set number of
retries failed
Master See above
Verify that the Slave
Node Address and
communication
parameters are setup
correctly.
0212
Exception Response Error
Slave answers by exception response
(See Exception Code List at the end of this
Section)
Details:
H-Byte: Abnormal function code
L-Byte: Exception code
Master See above
Verify that the
command and
command parameters
used is within the
Master and Slave
specifications.
0213
Slave Node Address Mismatch
The Slave Node address of the response
does not match the Slave Node address of
the request
Details:
H-Byte: requested Slave Node address
L-Byte: received Slave Node address
Master See above
See Corrective
Actions for Error
Code 207.
0214
Function Code Mismatch
The function code of the response does not
match the function code of the request
Details:
H-Byte: requested function code
L-Byte: received function code
Master See above
See Corrective
Actions for Error
Code 207.
0215
Illegal Broadcast Command
Slave receives broadcast request for
command unsupported by broadcast function
Details:
Slave See above
Verify that the
command is within
the Slave
Specifications and
that broadcasting is
applicable
(Chapter 7).
MODBUS
Error
Code
Error Name and Details
Master
/ Slave
Related Devices:(M & D) Corrective Action
Non-Diagnosis
Commands
Diagnosis
Commands
H-Byte 0
Command Code
(08H)
L-Byte Command Code
Sub-Command
Code