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SM500F

Field mountable paperless recorder 7 Configuration

130 IM/SM500F Rev. Z

7.12 Logic Editor

Note. The logic equation editor tabs are displayed only if the Math/Logic option is enabled.

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.

Inputs

0011

0100

Operators Outputs

All inputs high AND

0011

Any (or All) input(s) low NAND

1110

Any (or All) input(s) high OR

0111

No inputs high NOR

1000

Any, but not All, input(s) high XOR

0110

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.

ABB SM500F User Manual

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