11 TROUBLESHOOTING

11.2.14 Flowchart for when unable to write a program

MELSEC-Q

The following shows the flowchart to be followed when programs cannot be written in the CPU module.

Unable to write a program

Is the DIP switch

ON

SW1 set to OFF?

 

OFFNO

Turn the DIP switch SW1 (system protect) to OFF.

Is it able to write a program?

YES

Is the password registered?

NO

YES

NO

Cancel the password using the GX Developer.

Is it able to write a program?

YES

 

Memory

Is the memory program

 

card

memory?

 

 

Program memory

Perform the following. Organize file.

Confirm memory space. Confirm the writing destination specification.

Perform the following.

Confirm whether the write-protect switch is off or not.

Confirm if it is formatted. Confirm the writing destination specification.

Is it able to write a program?

NO

YES

Is it able to write a program?

YES

NO

1)

3)

2)

3)

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