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I have variables in "Retain"
Variables like pump speed and temperature set points
When I reset the PLC, all the values come back.
Doing cold reset through codesys also same thing
But when I power down (manually), the variables don't come back.
Why is that?
I've tried putting the variables in "Retain Persistent" and still the same thing.
Under target settings I have checked load boot project automatically
What else can I try?
This is very important as I don't think the PLC will be able to recover from a power outage without an operator being present and certain pumps need to be on at all time
Thanks
Sent from my iPhone using Tapatalk
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never used 'Ormec Smlc 160' so probably I would recommend to ask the
manufacturer of this plc if there is a NVRAM inside this plc.
This is needed to have the retain feature available.
BR
Edwin
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hello
Writing a program to Ormec Smlc 160
I have variables in "Retain"
Variables like pump speed and temperature set points
When I reset the PLC, all the values come back.
Doing cold reset through codesys also same thing
But when I power down (manually), the variables don't come back.
Why is that?
I've tried putting the variables in "Retain Persistent" and still the same thing.
Under target settings I have checked load boot project automatically
What else can I try?
This is very important as I don't think the PLC will be able to recover from a power outage without an operator being present and certain pumps need to be on at all time
Thanks
Sent from my iPhone using Tapatalk
Hi,
never used 'Ormec Smlc 160' so probably I would recommend to ask the
manufacturer of this plc if there is a NVRAM inside this plc.
This is needed to have the retain feature available.
BR
Edwin