Barry Kirk
Lifetime Supporting Member
I've got a data block, DB310, that contains process information entered from an HMI. Every time the processor is cycled from start to stop to start again, or power is cycled to the processor, the initial values for that DB overwrite the current value.
I would like the PLC to retain the working process values through a power cycle.
When I tried to set up the DB310 as Retentive Memory, the areas section of the Retentive Memory tab show as grayed out.
2 questions.
1) Why is the Areas section grayed out?
2) Would making DB310 retentive maintain the data through a power cycle is there some other procedure I need to follow to save this data?
I would like the PLC to retain the working process values through a power cycle.
When I tried to set up the DB310 as Retentive Memory, the areas section of the Retentive Memory tab show as grayed out.
2 questions.
1) Why is the Areas section grayed out?
2) Would making DB310 retentive maintain the data through a power cycle is there some other procedure I need to follow to save this data?