ControlMaster CM15 and CMF160
Universal process indicator
1
/8 DIN 7 Advanced Level
IM/CM/I–EN Rev. P 61
7.6 Functions
Contains parameters for setting up the math block(s), logic equations and timer functions within the
indicator.
Logic Equations Up to 8 logic equations can be configured. Each can combine up to 8 operands (digital signals)
with 7 operators. The elements of each equation are calculated sequentially. Operand 1, Operator
1 and Operand 2 are evaluated first. The result is combined with Operator 2 and Operand 3. This
result is then combined with the next operator and operand and so on to the end of the equation.
Note. If any of the operand sources are invalid (for example, an alarm that is not configured), the
logic equation output state is zero and invalid.
*2 Logic equations are required to perform an exclusive OR of 3 inputs
Operand 1
Operand 2
Operand 3
Operand 4
Operand 5
Operator 1
Operator 2
Operator 3
Operator 4
Key:
OR*
AND
NOR
NAND
EXOR
END
Output is 1 if either or both inputs are 1; output is 0 if both
inputs are 0
Output is 1 if both inputs are 1; output is 0 if either input is 0
Output is 0 if either or both inputs are 1; output is 1 if both
inputs are 0
Output is 0 if both inputs are 1; output is 1 if either input is 0
Output is 0 if both inputs are 0 or both inputs are 1; output
is 1 if one input is 1 and the other is 0
Terminates the equation.