C1300
Advanced circular chart recorder
3 Configuration
IM/C1300 Rev. J
47
3.11 Logic Equation Configuration
Overview.
8 logic equations
Up to 4 operands and 3 operators per equation
OR/AND/XOR/NAND/NOR/NOT operators
Can combine internal and external digital signals
– i.e. alarms, digital inputs, other logic equation results and real-time
events (if timer software option enabled by installation of the appropriate software key)
For each equation, the logic elements 1 to 7 are arranged sequentially, as shown below. Odd numbered elements are used for logic
inputs (operands) and even numbered elements for logic gates (operators).
Logic inputs must be set to one of the digital sources in Appendix A on page 77.
Logic inputs may be inverted (set to NOT)
Logic gates must be set to AND, OR, XOR, NAND, NOR or END. Setting an element to END terminates the equation.
Logic
Inputs
Equation 1.1
Equation 1.3
Equation 1.2
Equation 1.5
Equation 1.7
Result
Equation 1.4
Equation 1.6
AND
OR
XOR
NAND
NOR
AND
OR
XOR
NAND
NOR
AND
OR
XOR
NAND
NOR
Note.
The elements of each equation are calculated sequentially, i.e. elements 1, 2 and 3 are evaluated first and the result
combined with elements 4 and 5. This result is then combined with elements 6 and 7 to give the logic equation result.
