Keri Systems Doors.NET Manual - Manual (Page 471)

Doors.NET Reference Manual
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NOTE: This example uses Boolean Arithmetic. Please be familiar with Boolean Arith-
metic before attempting to program this type of macro. Note the ! symbol in front of the
Global Lock and Global Unlock trigger variables. This means that this trigger will only
execute if both Global Lock and Global Unlock are False. The ! is a Boolean variable rep-
resenting the NOT (or inverse) so we have NOT False AND NOT False which is the
same as TRUE AND TRUE. So if either one is true then we have a NOT TRUE and
therefore the trigger will not execute.
The Global Lock and Global Unlock trigger variables can also be used individually as
part of a trigger macro to have the controller perform certain events (like a door forced
open or held open) differently when either of these are in effect. In this case configure the
trigger without the ! and define the rest of the trigger.