Mitsubishi MELSEC Q Series, Programming Manual

Page: 129 / 816

5.3 Output Instructions
5.3.2 Timer
5-21
5
SE
Q
U
EN
C
E
INSTRUCTION
S
O
U
T_T
, O
U
TH_T
OUT_T, OUTH_T
(2) The contact responds as follows when the operation result up to the OUT(H)_T instruction is
a change from ON to OFF.
(3) To clear the current value of a retentive timer and turn the contact OFF after time up, use the
RST instruction.
(4) A negative number ( 32768 to 1) cannot be set as the setting value for the timer.
If the set value is 0, the timer will time out when the time the OUT(H)_T instruction is
executed.
(5) The following processing is conducted when the OUT(H)_T instruction is executed.
• OUT(H)_T T coil turned ON or OFF
• OUT(H)_T T contact turned ON or OFF
• OUT(H)_T T current value updated
In cases where the JMP instruction or the like is used to jump to the OUT(H)_T instruction
while the OUT(H)_T instruction is ON, no current value update or contact ON/OFF operation
is conducted.
Also, if the same OUT(H)_T instruction is conducted two or more times during the same
scan, the current value of the number of repetitions executed will be updated.
(6) Index setting for timer coils or contacts can be conducted only by Z0 or Z1.
Timer setting value has no limitation for index setting.
Remark
1. Timer's time limit
Time limit of the timer is set in the PLC system setting of the PLC parameter
dialog box.
2. For information on timer counting methods, refer to the following manual.
• QCPU User's Manual (Functions Explanation, Program Fundamentals)
O p erat i on E rror
No operation error occurs in the execution of the OUT(H)_T instruction.
Type of timer Timer coil
Current value of
timer
Prior to time up After time up
Normally open
contact
Normally
closed
contact
Normally open
contact
Normally
closed contact
Low-speed timer
OFF 0
Non-
conduction
Conduction
Non-
conduction
Conduction
High-speed timer
Low-speed
retentive timer
OFF
Retains the
Current value
Non-
conduction
Conduction Conduction
Non-
conduction
High-speed
retentive timer
Type of timer
QCPU QnACPU
Setting range
Setting
unit
Setting range
Setting
unit
Low speed timer
Low speed retentive timer 1ms to 1000ms
(Default: 100ms)
1ms
10ms to 1000ms
(Default: 100ms)
10ms
High speed timer
High speed retentive timer 0.1ms to 100ms
(Default: 10ms)
0.1ms
10ms to 100ms
(Default: 10ms)
1ms