SiemensAnalog output module SM332
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How are analog values standardized with STEP 7?
How are analog values standardized with STEP 7?
SiemensAnalog output module SM332
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~ Since analog signals can take on any value between two ranges, they must first be standardized to make them readable to the PLC.
The following functions are used for standardization:
- AwlScaleLinearInt
- AwlScaleLinearIntToReal
- AwlScaleLinearReal
- AwlScaleLinearRealToInt
All functions are written in STL language.
With the S7-300 / S7-400 these functions do not change the address register AR1 / AR2 and for FBD and LAD applications they provide the ENO box in which the RLO = 0 or 1 is stored in the BR bit.
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