List Of Error Codes - Mitsubishi Electric MELSEC-Q Series User Manual
Anywire db a20 master module
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Also See for MELSEC-Q Series:
- User manual (834 pages) ,
- Reference manual (674 pages) ,
- Programming manual (624 pages)
Table of Contents
9.5
List of Error Codes
This section lists the error codes of the master module.
Error code
Error description
0064
to 0067
Master module hardware error
H
H
0068
CPU module stop error
H
Transmission cable voltage drop
00C8
H
error
00C9
Short between D and G terminals
H
00CA
D, G disconnection error
H
00CB
D-24 V short error
H
A malfunction has been detected in the master module hardware. Reset the CPU
module or power off and on the system.
If the error occurs again, the master module may be in failure. Please consult
your local Mitsubishi representative.
A stop error has occurred in the CPU module.
Check and correct the error using PLC Diagnostics of the programming tool.
The voltage of the 24VDC external power supply may be lacking. Perform the
following.
• Adjust the power supply voltage of the 24VDC external power supply to be
within the rated value (21.6 to 27.6VDC).
• Check that the power cables (24V, 0V) are not disconnected or short-circuited.
• When crimping the link connector, check that the pin assignment is correct.
• Check that the 24VDC external power supply is properly connected to the
terminal block of the master module or the slave module.
• Check that there is no short-circuit or incorrect wiring and screws have been
tightened sufficiently.
The transmission cables (D, G) may have short-circuited. Perform the following.
• Check that the transmission cables (D, G) are not short-circuited.
• When crimping the link connector, check that the pin assignment is correct.
• Check that the transmission cables (D, G) are not short-circuited and there is
no incorrect wiring in the terminal block wiring of the master module and the
slave module.
The transmission cables (D, G) may be disconnected or there may be no
response from the slave module. The slave module may be in failure or the
system configuration may have been changed after execution of the automatic
address detection function. Check the buffer memory areas "Number of error IDs
(1 word)" (2000
) and "Error ID information" (2001
H
disconnected cable and perform the following.
• Check that the transmission cables (entire cables) are free from disconnection.
• Check that the cables have been crimped with proper pin assignment using link
connectors appropriate to the wire diameter.
• Check that the transmission cables (D, G) and power cables (24V, 0V) are
properly connected to the terminal block of the master module.
• Check that there is no incorrect wiring and screws have been tightened
sufficiently.
• When creating a new system, adding or removing a slave module, or changing
the address of the slave module, execute the automatic address detection
function. After executing the automatic address detection function, check that
the number of slave modules and the address are consistent with those of the
actual system.
• If the LINK LED on the slave module is not flashing, check that there is no
disconnection, short-circuit, incorrect wiring, or poor contact in the transmission
cables (D, G) around the module.
The transmission cables (between D and 24V) may be short-circuited. Perform
the following.
• Check that the transmission cables (between D and 24V) are not short-
circuited.
• When crimping the link connector, check that the pin assignment is correct.
• Check that the transmission cables (between D and 24V) are not short-
circuited and there is no incorrect wiring in the terminal block wiring of the
master module and the slave module.
CHAPTER 9 TROUBLESHOOTING
Action
to 2080
) to locate the
H
H
9
67
Table of Contents
Troubleshooting
