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21 DEVICES
21.3 User Device
■Low-speed/high-speed timer (T/ST)
The low-speed timer and high-speed timer are the same device which is set to a low speed or high speed timer by writing the
instruction accordingly to specify it on the timer. For example, specifying OUT T0 generates a low-speed timer and specifying
OUTH T0 produces a high-speed timer even when using the same T0 device. This also applies to the retentive timer.
Timer time limit value
Although the low-speed timer and high-speed timer are the same device, timer limit value are different depending on how to
specify the timer device (how to write the instruction). For example, specifying OUT T0 generates a low-speed timer and
specifying OUT H T0 produces a high-speed timer even when using the same T0 device. This also applies to the retentive
timer. The long timer cannot be set to a low-speed or high speed device. The time limit value for each timer is set in "Timer
Limit Setting".
■Timer limit setting
The following window is to set the timer time limit values.
[CPU Parameter] [Operation Related Setting] [Timer Limit Setting]
Timer current value and the measurable range
This sections describes the timer current value and the measurable range.
■Timer (T/ST)
The current value range is 0 to 32767. The measurable time range is from 0 to (timer time limit value 32767).
■Long timer (LT/LST)
The setting range of the current value is 0 to 4294967295, which is the same as the range of unsigned 32-bit integers. The
measurable time range is from long timer time limit value to (timer time limit value 4294967295).
Handling timers
When executing the timer coil (the OUT T instruction), the timer coil is turned on/off, the current value is updated, and the
contact is turned on/off.
Item Description Setting range Default
Low Speed Timer/Low Speed
Retentive Timer
Set the timer time limit value of T and ST used for the low-speed
timer and low-speed retentive timer.
1 to 1000ms (unit: 1ms) 100ms
High Speed Timer/High Speed
Retentive Timer
Set the timer time limit value of T and ST used for the high-speed
timer and high-speed retentive timer.
0.01 to 100ms (unit: 0.01ms) 10.00ms
Long timer/Long retentive timer Set the timer time limit value of LT and LST used for the long timer
and long retentive timer.
0.001 to 1000ms (unit: 0.001ms) 0.001ms
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