Mitsubishi Electric MELSEC iQ-R Series User Manual page 478

Error code Error
(hexadecima
l)
7169H CPU error
716CH System error
716FH Device error
7170H 1C frame error
7171H 1C frame error
7172H 1C frame error
7173H Monitor
registration error
7817H Remote password
error
7D00H Protocol No.
setting error
7D01H Protocol
continuous
execution count
setting error
7D02H Protocol not-
ready error
7D10H Protocol
unregistration
error
27 TROUBLESHOOTING
476
27.4 Error Code List
Description Signal
name
• Communication with the C/N
CPU module cannot be
established normally.

• The operating system of
C24 detected some error.
• A nonexistent device was PRO
designated.
• Device that cannot be
specified by the
corresponding command
was designated.
• Number of access points PRO
exceeded the range.
• A device that cannot be PRO
designated was
designated.
• The registered number of PRO
monitoring points is
incorrect. For example, '0'
was designated.
• Monitor registration was PRO
performed to a CPU
module other than R/Q/L/
QnACPU using 2C/3C/4C
frame.
C24 is in the remote 
password locked out state.
• The protocol number is CHn
out of range in the control ERR.
data for CPRTCL
instruction.
• The number of protocols CHn
to be executed ERR.
continuously is out of
range in an argument of
the CPRTCL instruction.
• The CPRTCL instruction CHn
was executed while the ERR.
'predefined protocol
ready' (X1D) is OFF.
• The CPRTCL instruction
was executed while the
protocol setting data is
being written.
• The CPRTCL instruction
was executed with
abnormal protocol setting
data.
• The protocol No. which is CHn
not registered in C24 is
ERR.
specified in the control
data for the CPRTCL
instruction.
• The CPRTCL instruction
was executed without the
protocol setting data
written.
Corrective action
• If the CPU module side has an
error, remove the error and
restart data communications.
Page 490 Corrective actions
for system error
• Check and correct the
transmission message from
the target device and restart
data communications.
• Check and correct the
transmission message from
the target device and restart
data communications.
• Check and correct the
transmission message from
the target device and restart
data communications.
• Check and correct the
transmission message from
the target device and restart
data communications.
• For CPU module other than R/
Q/L/QnACPU, use 1C frame
for monitor registration and
monitor.
• Wait for awhile, and retransmit
the password.
• Review the protocol number.
• Review the number of
protocols to be executed
continuously.
• Execute the CPRTCL
instruction after the
'predefined protocol ready'
(X1D) turned ON.
• Do not execute the CPRTCL
instruction while the protocol
setting data is being written.
(Set the CPU module in STOP
state, and write protocol
setting data.)
• Write the protocol setting data
again to C24, and then
execute the CPRTCL
instruction.
• If this error persists even after
rewriting, replace the module.
• Check if the specified protocol
No. is correct.
• Check the 'Protocol
registration' (Un\G16529 to
16536) to see if the specified
protocol number is registered.
• Write the protocol setting data,
and then execute the
CPRTCL instruction.
Protocol
MC Nonpr Bidire Prede
ocedu ctiona fined
ral l
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