CJ2M Function Block String to Real

[nicepal 0]

I have this issue. working on Omron's CJ2M.

String received can be +4.24737E-03 or +2.17737E+01

Somehow, the structure text function does not have STRING_TO_REAL.

We need to extract some readings from a Meter and do some value comparison in the PLC to set the passing range. Any advise I can get from personnel here?

[Mendon Systems 22]

The FVAL(449) instruction should do wat you are looking for.

[nicepal 0]

Seems the FVAL is in the Ladder format. Under Structure Text, like don't have direct.

Anyway, I have work around this by extracting the Integer part to a DINT -> Real, the Decimal part to another DINT -> Real -> Convert into Decimal value. Add them together. Then check if it is E+ or E-, and Multiply or Divide according to the E number.