Mitsubishi MELSEC LJ71C24, Руководство пользователя

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15 TROUBLESHOOTING
Protocol
Error code
(Hexa-
decimal)
Error
Description
Signal
name
Corrective action
MC
Non-
proce-
dural
Bi-
direc-
tional
Pre-
defined
7164
H
Request error
•
Either the request or the device
designation method is wrong.
⎯
•
Check the transmission
message/request from the external
device, make the necessary
corrections, and send again.
7166
H
System error
•
The OS of the C24 detected some
error.
⎯
( 1)
7167
H
•
A write command was designated when
disable online change was set.
C/N
•
Change the setting to enable online
change and restart data
communications.
•
Set the CPU module to STOP, and retry
communications.
7168
H
Cannot execute a
command during
RUN
•
A command that cannot be executed
during RUN was designated.
C/N
•
Stop the CPU module and restart data
communications.
7169
H
CPU module error
•
Cannot communicate normally with the
CPU module.
C/N
•
If there is an error in the CPU module,
remove the CPU error and restart data
communications.
716A
H
to
716C
H
System error
•
The OS of the C24 detected some
error.
⎯
( 1)
716D
H
•
Monitor data was not written using QnA
compatible 2C/3C/4C frame.
PRO.
716E
H
Monitor data write
error
•
Monitor data was not written using A
compatible 1C frame.
PRO.
•
Rewrite monitor data.
716F
H
Device error
•
A nonexistent device was designated.
•
Device that cannot be specified by the
corresponding command was
designated.
PRO.
7170
H
•
Number of access points exceeded the
range.
PRO.
7171
H
•
A device that cannot be designated was
designated.
PRO.
7172
H
A compatible 1C
frame error
•
Written number of monitoring points is
incorrect. For example, [0] was
designated. PRO.
•
Check and correct the external device
transmit message and restart data
communications.
7173
H
Monitor data write
error
•
Monitor data was written for a CPU
other than a Q/L/QnACPU using QnA
compatible 2C/3C/4C frame. PRO.
•
For a CPU other than Q/L/QnACPU,
use the A compatible 1C frame to write
the monitor data.
7D00
H
Protocol No. setting
error
•
In control data of the CPRTCL
instruction, the protocol No. is out of
range.
CHn
ERR.
•
Correct the protocol No.
7D01
H
Continuous protocol
execution count
setting error
•
The number of protocols to be executed
continuously, which is specified with an
argument in the CPRTCL instruction, is
out of range. CHn
ERR.
•
Correct the number of protocols to be
executed continuously.
7D02
H
Protocol not-ready
error
•
The CPRTCL instruction was executed
while Predefined protocol ready (X1D)
is OFF.
•
The CPRTCL instruction was executed
during protocol setting data writing.
•
The CPRTCL instruction was executed
with abnormal protocol setting data.
CHn
ERR.
•
Confirm Predefined protocol ready
(X1D) turned ON before executing the
CPRTCL instruction.
•
Do not execute the CPRTCL instruction
during writing of protocol setting data.
(Set the CPU module to STOP before
writing protocol setting data.)
•
Write the protocol setting data again to
the C24, and then execute the CPRTCL
instruction.
•
If this error persists even after rewriting,
replace the module.