When Unable To Read From Or Write To The Specified Device - Mitsubishi Electric Q12DCCPU-V User Manual

16
TROUBLESHOOTING
16.2.15
The following flowchart shows the procedure to be taken when reading from or writing to
the specified device cannot be performed with a MELSEC data link function.
Unable to read or write data.
Is the specified
device No. 32768
(8000 ) or higher?
H
No
Is the specified
size 32768 (8000
more?
No
Consult your local Mitsubishi service center
or representative, explaining the details of the
problem.
16
- 27 16.2 Troubleshooting

16.2.15 When unable to read from or write to the specified device

When unable to read from or write to the specified device
POINT
Use an extended function when:
• Specifying device No.32768 (8000
• Specifying a size of 32768 (8000
Yes
Yes
Is any extended function used?
Yes
) bytes or
H
Yes
Is any extended function used?
Figure 16.18 When unable to read from or write to the specified device
Q12DCCPU-V Q06CCPU-V
) or higher.
H
) bytes or more.
H
No
No
Modify the user program so that
extended functions will be used.
End
Q06CCPU-V-B