Mitsubishi Electric MELSEC iQ-R Series User Manual page 461

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]
Window
Displayed items
Item
Low Speed Timer/Low Speed
Retentive Timer
High Speed Timer/High Speed
Retentive Timer
Long timer/Long retentive timer
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.
Description
Set the timer time limit value of T and ST used for the low-speed
timer and low-speed retentive timer.
Set the timer time limit value of T and ST used for the high-speed
timer and high-speed retentive timer.
Set the timer time limit value of LT and LST used for the long timer
and long retentive timer.
Setting range
1 to 1000ms (unit: 1ms)
0.01 to 100ms (unit: 0.01ms)
0.001 to 1000ms (unit: 0.001ms)
27 DEVICES
27.3 User Device
27
Default
100ms
10.00ms
0.001ms
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