Error Code List - Mitsubishi Electric MELSEC iQ-R Series User Manual

27.4

Error Code List

This section explains the error codes, error contents, and corrective actions for errors may occur during data communication
and when using the modem function.
The signal name in the table shows the LED lighting status and communication error status stored in the 'CH side LED
lighting status, communication error status' (Un\G513/514) when error occurs.
The CH side LED lighting status and communication error status can be checked with the System Monitor function or the
Intelligent Function Module Monitor function of Engineering tool.
Note that "NAK" turns ON for errors which occur by the MC protocol communication and the signal name is not indicated.
For the error code when communicating using 1C frame, refer to the following manual.
MELSEC-L Serial Communication Module User's Manual (Basic)
Error code Error
(hexadecima
l)
2242H Module
parameter error
2250H Module extended
parameter error
20E0H Invalid module
3C00H System error
7102H System error
7103H PLC access error
7104H System error
Description Signal
name
• Incorrect setting value ERR.
was set to the module
parameter.
■The written module
CHn
extended parameter setting ERR.
is any of the following:
• The module extended
parameter for other
module was written to the
CPU module.
• The predefined protocol
setting has an error.
• The data for the set item
is corrupted.

• C24 cannot communicate
with the CPU module.
• The operating system of 
C24 detected some error.

• The operating system of
C24 detected some error.
• Communication with the C/N
CPU module is not
established.

• The operating system of
C24 detected some error.
Corrective action Protocol
MC

• Set the correct value to the
module parameter, and
rewrite it to the CPU module.

• Write module extended
parameters for C24 to the
CPU module.
• Check the predefined protocol
setting in the protocol setting
data error (buffer memory:
4086H to 4089H), and correct
and write it to C24, and
execute the CPRTCL
instruction.
• Replace the module if error
occurs even after rewriting.
• The hardware error of the
CPU module may have been
occurred. Please consult your
local Mitsubishi
representative.
Page 490 Corrective actions
for system error
Page 490 Corrective actions
for system error
• Increase the monitoring time 
(timer 1).
• Perform a self-loopback test,
and check if the data
communication with the CPU
module can be established.
Page 490 Corrective actions
for system error
Nonpr Bidire Prede
ocedu ctiona fined
ral l
  
  
27 TROUBLESHOOTING
473
27.4 Error Code List
27