Woodward highprotec MRI4, User Manual

Page: 604 / 727

Programmable Logic
Available Gates (Operators)
Within the Logic Equation, the following Gates can be used:
Input Signals
The user can assign up to 4 Input signals (from the assignment list) to the inputs of the gate.
As an option, each of the 4 input signals can be inverted (negated)
Timer Gate (On Delay and Off Delay)
The output of the gate can be delayed. The user has the option to set an On and an Off delay.
Latching
The logic equations issues two signals. An unlatched and a latched signal. The latched output is also available as
an inverted output.
In order to reset the latched signal the user has to assign a reset signal from the assignment list. The reset signal
can also optionally be inverted. The latching works based on reset priority. That means, the reset input is dominant.
604 MRI4 DOK-HB-MRI4-2E
&
AND
NAND
OR
NOR
Gate
& >1 >1