Appendix 2.1.4 Timer Comparison - Mitsubishi MELSEC Q Series Programming Manual

Appendix 2.1.4
Function
Measurement
unit
Low speed timer
Designation
method
Measurement
unit
High speed timer
Designation
method
Measurement
unit
Retentive timers
Designation
method
Measurement
unit
High speed reten-
Designation
tive timer
method
Setting range for set values
Processing for set value 0
Contact
Coil
Index modification
Set value
Present value Enabled (Z0 to Z15 are usable)
Update processing for present value
Contact ON/OFF processing
(1) Cautions on using timers
QCPU, LCPU updates the present value of timers and turns ON/OFF the contacts of them at
the execution of OUT T
Therefore, if "Present value
that timer is turned ON.
When creating a program in which the operation of the timer contact triggers the operation of
another timer, create the program for the timer that operates later first.
In the following cases, all timers go ON at the same scan if the program is created in the
order the timers operate.
• With high speed timers, if the set value is smaller than a scan time.
• With slow timers, if "1" is set.
App-144
Timer comparison
QCPU/LCPU
100ms (default value)
Change of measurement unit at the parameter is enabled.
QCPU/LCPU: 1 to 1000ms (1ms unit)
10ms (default value)
Change of measurement unit at the parameter is enabled.
QnUCPU/LCPU: 0.01 to 100ms (0.01ms unit)
QCPU(Other than QnUCPU)
: 0.1 to 100ms (0.1ms unit)
H
T0
High speed timer setting: Conducted by sequence program
Same measurement unit as low speed timer
Same measurement unit as high speed timer
H
ST0
High speed timer setting: Conducted by sequence program
1 to 32767
Momentarily ON
Enabled (only Z0 and Z1 are usable)
Enabled (only Z0 and Z1 are usable)
Enabled (Z0 to Z15 are usable)
When OUT Tn instruction is executed
*1 : The Q00J/Q00/Q01CPU can use Z0 to Z9.
The Universal model QCPU/LCPU can use Z0 to Z19.
TableApp.2.4 Timer Comparison
K100
T0
High speed timer specification
K100
K100
ST0
High speed timer specification
K100
*1
*1
instruction.
Set value" when the timer coil is turned ON, the contact of
AnUCPU AnACPU
Fixed at 100ms
Fixed at 10ms
High speed timer setting: Conducted at parameters
Fixed at 100ms
None
1 to 32767
No maximum (does not time out)
Enabled
Disabled
Disabled
Enabled
When END processing is done
AnNCPU
K100
T0
K100
T200
K100
T0
Disabled
Disabled
Disabled
Enabled