TIMER timer_number = time_value

Function

Set the specified system timer to the given time value.

Usage Considerations

Times measured by V+ are precise only to within 1 millisecond (0.001 seconds); shorter times cannot be measured.

System timer number 0 is the system clock and cannot be set with this instruction.

Parameter s

timer_number Real-valued expression interpreted as the (integer) number of the timer to be set. The value must range from 1 to 15.

time_value Real-valued expression interpreted as the time, in seconds, to which the timer is set. This parameter may specify fractions of a second and may be negative.

Details

When used as described in the examples below, the timers can measure an interval of 596 hours with 1 millisecond resolution.

Use the TIMER real-valued function to read the instantaneous value of a system timer.

Example

The following examples show two ways to wait for a certain amount of time, using the TIMER instruction and real-valued function. Each example first sets the timer, and then waits until the timer value has changed by the delay period:

TIMER 1 = 0 												;Set timer to zero 	 
WAIT TIMER(1) > delay 					;Wait until timer > delay 
TIMER 1 = -delay 												;Set timer to -delay 	 
WAIT TIMER(1) > 0 												;Wait until timer > zero 

Related Keyword

TIMER (timer_number) (real-valued function)

Syntax

TIMER-R