5 SEQUENCE INSTRUCTIONS
5.3 Output Instructions
151
5
• When the operation results up to the OUT instruction are ON, the timer coil goes ON and the timer counts up to the value
that has been set; when the time up status (total numeric value is equal to or greater than the setting value), the contact
responds as follows:
• The contact responds as follows when the operation result up to the OUT instruction is a change from ON to OFF:
• To clear the present value of a retentive timer and turn the contact OFF after time up, use the RST instruction.
• A negative number (-32768 to -1) cannot be set as the setting value for the timer.
*3
If the setting value is 0, the timer will
time out when the OUT instruction is executed.
*3 When specifying a setting value for the timer using a word device (D, W, R, ZR, J\, or U\G), whether the value is in the setting
range is not checked. Check the value in the user program so that a negative number is not set.
• The following processing is conducted when the OUT instruction is executed:
In cases where a JMP instruction or the like is used to jump to an OUT T instruction while the OUT T instruction is ON, no
present value update or contact ON/OFF operation is conducted.
Also, if the same OUT T instruction is conducted two or more times during the same scan, the present value of the number
of repetitions executed will be updated.
• Indexing for timer coils or contacts can be conducted only by Z0 or Z1. (QnUDVCPU is excluded.)
• Timer setting value has no limitation for indexing.
• The number of basic steps of the OUT T instruction is 4.
• Time limit of the timer is set in the PLC system of the PLC parameter dialog box.
[Basic model QCPU, High Performance model QCPU, Process CPU, and Redundant CPU]
Low speed timer/Low-speed retentive timer: 1ms to 1000ms (default: 100ms, setting unit: 1ms)
High speed timer/High-speed retentive timer: 0.1ms to 100.0ms (default: 10.0ms, setting unit: 0.1ms)
[Universal model QCPU and LCPU]
Low speed timer/Low-speed retentive timer: 1ms to 1000ms (default: 100ms, setting unit: 1ms)
High speed timer/High-speed retentive timer: 0.01ms to 100.0ms (default: 10.0ms, setting unit: 0.01ms)
• For information on timer counting methods, refer to the User's Manual (Function Explanation, Program
Fundamentals) for the CPU module used.
• There is no operation error in the OUT instruction.
• A Contact: Continuity
• B Contact: Non-continuity
Type of timer Timer coil Present value of
timer
Prior to time up After time up
A contact B contact A contact B contact
Low speed timer OFF 0 Non-continuity Continuity Non-continuity Continuity
High speed timer
Low-speed retentive
timer
OFF Maintains the present
value
Non-continuity Continuity Continuity Non-continuity
High-speed retentive
timer
•OUT T coil turned ON or OFF
•OUT T contact turned ON or OFF
•OUT T present value updated
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