First defined in: FKiSS4
Sets the value of variable to the amount of time remaining
before the timer for alarm ID reaches zero. For any timer which is
counting down, this value may be zero or greater. If no timer is counting
down for that alarm the value of variable is set to -1.
variable
variable must be the name of a variable.
alarm ID
alarm ID may be an alarm ID (number or symbolic
name) or a variable representing an alarm ID number.
Example:
;@ lettimer(Delay, MyAlarm) ; Get the timer value from alarm "MyAlarm" and put into variable Delay.