How do you scale data within a numeric object?

[gary14]

I am using 1200 siemens and a weintek HMI, I am reading values through Modbus for a soft starter and the HMI and PLC are communicating through ethernet , using driver s7 commplus.

I have imported the tags from the siemens program.
I am able to write the values of the PT but it does so in ms I need them to be S.
How can I do a arithmetic operation when I imported the tag ?
Also I need to limit them , lets say 6s minimum accepted value and 20 s maximum value accepted.

thanks

[Brendon.S]

Hi @gary14,

To scale items written or read into this tag, you may use “Interpolation” as shown within the example below:

1. Within the “Format” tab select “Interpolation”:
   

2. Configure the “Scaling low” and “Scaling high” limits as well as the “Device low” and “Device high” limit:
   

   

[gary14]

That did it !!

Thanks