Mitsubishi MELSEC Q series User Manual page 118

(2) Setting items
Item
Each scanning cycle
Time value
Unit of time
Time
specification
Sample data at the first
END processing after the
specified time has elapsed
Each multiple CPU high speed
transmission cycle
Device
specification
Sampling
interval
Condition
specification
Step No.
specification
*1 Only the High-speed Universal model QCPU and the Universal model Process CPU support this item.
116
Select this when data are to be sampled at each scanning cycle.
Set a sampling interval value.
Select a unit of time.
Select this when data are to be sampled in the first END
processing after the specified time has elapsed.
Specify a data sampling cycle. Data are sampled at the interval
obtained by multiplying the specified cycle by 0.88ms (multiple
*1
CPU high speed transmission cycle).
Device Any of the devices listed in Page 52, Section 6.2 (4) (a) can be set.
• For bit device
"PLS": When the bit of the bit device rises
Data are sampled when the status of the specified device is
changed from off to on.
"PLF": When the bit of the bit device falls
Data are sampled when the status of the specified device is
Conditional changed from on to off.
formula • For word device
"=": When the word device value meets the specified value
Data are sampled when the current value of the specified
device is equal to the condition value.
"During change": When the word device data is changed
Data are sampled when the current value of the specified
device is changed.
Radix Set a radix of the condition value for the word device.
Value Set a value that is compared with a device value.
Program Enter a name of the program in which data are sampled when the
name condition is met in the specified step.
Set a step number of the step where data are to be sampled when
Step No.
the condition is met.
Select a data sampling condition from the following.
"Always": Always
Data are always sampled in the specified step.
"ON": When execution condition is ON
Data are sampled when the result of the operation in the
specified step is true.
"OFF": When execution condition is OFF
Execution
Data are sampled when the result of the operation in the
condition
specified step is false.
"PLS": When execution condition rises
Data are sampled at the time the result of the operation in the
specified step is changed from false to true.
"PLF": When execution condition falls
Data are sampled at the time the result of the operation in the
specified step is changed from true to false.
Description Setting range

• Millisecond: 1 to 32767
• Second: 1 to 86400
ms or s

1 to 50

• For bit device:
"PLS", "PLF"
• For word device:
"=", "During change"
DEC or HEX
• Decimal: -32768 to 32767
• Hexadecimal: 0 to FFFF
H H
Eight alphanumeric
characters or less
0 to 266240
"Always",
"ON",
"OFF",
"PLS",
"PLF"