KCRP

How to hold the particular value and memory of program even in power off

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Hai i want to know how to save and retain the values of the program even in Emergency power off the PLC and on again? can any one help me?

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Use latched devices!!!

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Sorry i am new to this field. can you please tell me how to use that in program? I am using Mitsubishi FX3U Series of plc.

 

Edited by KCRP

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Juts open your PLC parameters in GX and take a loot at the devices defined for latched. second Tab.
All latched devices retain their values due to the battery inside when power is off

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Hai, what is the one scan ON contact address during switching ON for Mitsubishi FX3U Series.

Edited by KCRP

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Just now, kaare_t said:

M8002

Thanks

 

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Is there a way to have the address auto assigned through the label database. So it's a latch autoassigned ?

 

 

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No you will have to address the device and use an address from the latched range

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