PLC Misubishi Q02U CPU

[zai_jnr]

Hi members,

Need advice regarding Q02U CPU type..I'm now try to convert or upgrade CPU from A series to Q series that using Q02UCPU..

Face problem when GX request password when i want to download converted program to new Q02CPU series.. When ask maintenance guy, existing program A series never have password.

What i need to do ya? Plz help me..

note : this is second time happen with Q0nU CPU ask password when to download and monitoring ladder. 1st issue still not solve, now face 2ns issue.

 

[parky]

It sounds to me like the "Q" CPU has a password in it.
Try writing a small program then download it to the Q if it requests a password then it if definitely the Q.
I have never tried to download a converted program from A to Q but I'm sure if there was a password in the A it would request it when trying an upload.
Try removing the battery from the Q for a couple of days (the old A series could hold the settings for upto 4 days with no battery.