Logic Editor - ABB SM500F User Manual

SM500F
Field mountable paperless recorder

7.12 Logic Editor

Note. The logic equation editor tabs are displayed only if the Math/Logic option is enabled.
130
Select the logic equation to create or modify.
Specify the first operand – can be any digital signal.
Invert the signal, if required.
Select an operator for the next input – see Table 7.5.
All inputs high
Any (or All) input(s) low
Any (or All) input(s) high
No inputs high
Any, but not All, input(s) high
Table 7.5 Logic Operators
Repeat these steps until the equation is complete.
Enter an equation tag (20 characters maximum) to be displayed in the
Alarm Event log.
Set to 'On' to enable changes in the equation's state to be recorded in the
Alarm Event log.
A
Inputs
B
Operators
AND
NAND
OR
NOR
XOR
7 Configuration
0 0 1 1
0 1 0 0
Outputs
0 0 1 1
1 1 1 0
0 1 1 1
1 0 0 0
0 1 1 0
IM/SM500F Rev. Z