ControlMaster CM30, CM50 and CMF310
Universal process controllers,
1
/4,
1
/2 DIN and fieldmount 7 Advanced Level
IM/CM/ED–EN Rev. X 79
…Functions / …Math Blocks
Multiplexer Setup
Source 1 Selects the source for the first input into the multiplexer.
Source 1 Constant Sets the constant value to be used.
Note. Applicable only if Source 1 is assigned to one of the constants.
Source 2 Select the source for the second input into the multiplexer.
Source 2 Constant Sets the constant value to be used.
Note. Applicable only if Source 1 is assigned to one of the constants.
Mux Selector Select the digital signal to be used to switch between the 2 multiplexer inputs.
'0' selects first input (Mux A Src); '1' selects second input (Mux B Src).
Square Root Setup
Source 1 Selects the source of the parameter that requires square root to be applied.
Setup for All Math Block Types
Eng. Dps Selects the number of decimal places (resolution) displayed for the math block result.
Eng. Low
Eng. High
Selects the engineering range low / high value for display purposes and for calculation of the
proportional band.
If the math block result exceeds the Eng High or Eng Low value by more than 10 %, a 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 108 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 the minimum value.
If the failed calculated output value is above zero the output is driven to the maximum value.
Upscale
If the math block fails, the output is driven to the maximum value.
Downscale
If the math block fails, the output is driven to the minimum value.
To Next Page
Loading...
