Flowchart For When A Program Cannot Be Written - Mitsubishi MELSEC User Manual

12
TROUBLESHOOTING

12.2.11 Flowchart for when a program cannot be written

The following shows the flowchart for when programs cannot be written in the CPU
module.
A program cannot be written to the CPU
Has the password
registered?
NO
Perform the following.
Organize files.
Confirm memory space.
Confirm the writing destination.
Can a program be
written?
NO
Format program memory.
NO
Can a program be
written?
NO
Turn on power supply again and
initialize the PLC memory. Register
the CPU access password.
Can the program be
written?
NO
Hardware error
Please consult your local Mitsubishi
service center of representative,
explaining a detailed description of
the problem.
* 1: If the password registration cannot be canceled due to the loss of
Figure 12.7 Flowchart for when a program cannot be written
12.2.11 Flowchart for when a program cannot be written
YES
Cancel the password using GX
Developer. *1
Can a program be
written?
NO
YES
YES
YES
password, initialize the PLC memory with GX developer.
The PLC memory initialization initializes the memory of the CPU
module (i.e. deletes all information in the CPU module) and resets
the memory to the factory default.
GX Developer Operating Manual (Safety PLC)
12.2 Troubleshooting Flowchart
YES
Completed
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