Mitsubishi MELSEC QCPU User Manual

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MELSEC-Q/QnA
5 SEQUENCE INSTRUCTIONS
[Set Data]
Set Data Meaning Data Type
D
Timer number Bit
Set value Value set for timer BIN 16 bits 3
POINT
3: The value setting for the timer cannot be designated indirectly.
@ D0
T0
Indirect designation not possible
See Section 3.4 for further information on indirect designations.
[Functions]
(1) 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:
A contact Continuity
B contact Non-continuity
(2) The contact responds as follows when the operation result up to the OUT instruction is a
change from ON to OFF:
Prior to Time Up After Time Up
Type of Timer Timer Coil
Present
Value of
Timer
A Contact B Contact A Contact B Contact
Low speed timer
High speed timer
OFF 0
Non-
continuity
Continuity
Non-
continuity
Continuity
Low speed retentive timer
High speed retentive timer
OFF
Maintains
the present
value
Non-
continuity
Continuity Continuity
Non-
continuity
The present value is cleared from low speed retentive timers and high speed retentive timers, and the
contact is reset, by use of the RST instruction.
(3) To clear the present 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 setting value is 0, the timer will time out when the time the OUT instruction is executed.
(5) The following processing is conducted when the OUT instruction is executed:
• OUT T
coil turned ON or OFF
• OUT T
contact turned ON or OFF
• OUT T
present value updated
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.
(6) Index modification for timer coils or contacts can be conducted only by Z0 or Z1.
Index modification cannot be conducted for the set value for the timer.
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Mitsubishi MELSEC QCPU Specifications

General

Brand	Mitsubishi
Model	MELSEC QCPU
Category	Controller
Language	English