ControlMaster CM10, CM30 and CM50
Universal process controllers,
1
/
8
,
1
/
4
and
1
/
2
DIN
7 Advanced Level
IM/CM/S–EN Rev. R
87
…Functions / …Math Blocks
Setup for
All Math Block Types
Eng. Dps
Selects the resolution required to be displayed for the math block result.
Eng. Low
Eng High
Selects the engineering range low / high value for display and calculation of proportional band.
If the math block result exceeds the
Eng High
or
Eng Low
value by more than 10%, the math
block fail state is set and its output is determined by the
Fault Action
(see below).
Eng Units
The selected units are displayed in the operator pages – see Appendix C, page 122 for
description of engineering units.
Fault Action
The value returned when the math block fails can be configured.
None
Failed calculated value is used as math block output.
Automatic
If the failed calculated output value is below zero the output is driven to its minimum value.
If the failed calculated output value is above zero the output is driven to its maximum value.
Upscale
If the math block fails, its output is driven to its maximum value.
Downscale
If the math block fails, its output is driven to its minimum value.