Mitsubishi Electric Q12DCCPU-V - When Unable to Read from or Write to the Specified Device

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16.2 Troubleshooting
16.2.15 When unable to read from or write to the specified device
16
TROUBLESHOOTING
16.2.15 When unable to read from or write to the specified device
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.
POINT
Use an extended function when:
• Specifying device No.32768 (8000
H) or higher.
• Specifying a size of 32768 (8000
H) bytes or more.
Figure 16.18 When unable to read from or write to the specified device
Q12DCCPU-V
Q06CCPU-V
Q06CCPU-V-B
No
No
Yes
Yes
Unable to read or write data.
Is the specified
device No. 32768
(8000
H) or higher?
Is the specified
size 32768 (8000
H) bytes or
more?
Consult your local Mitsubishi service center
or representative, explaining the details of the
problem.
Yes
Yes
No
No
Is any extended function used?
Is any extended function used?
Modify the user program so that
extended functions will be used.
End