Mitsubishi Electric Q01UCPU User Manual page 147

(a) When only a step number is specified
Monitor data is collected when the status immediately before execution of the specified step becomes the
specified status.
The following status can be specified.
• When the operation of the specified step changes from the non-execution status to the execution status:
<>
• When the operation of the specified step changes from the execution status to the non-execution status:
<>
• Always only when the operation of the specified step is in execution: <ON>
• Always only when the operation of the specified step is in non-execution: <OFF>
• Always regardless of the status of the operation of the specified step: <Always>
● If a step between the AND/OR blocks is specified as a monitor condition, monitor data is collected when the status
previous to execution of the specified step is specified by the LD instruction. The monitor timing depends on the ladder of
step specified as a monitor condition. The following shows examples of monitoring when the step 2 is on (Step No. [2] =
<ON>).
Condition
When the step 2 is connected by the AND
instruction
When the step 2 is connected in the middle of the
AND/OR block
When the start of a ladder block other than the
step 0 is specified for the step number as a
detailed condition
● When "0" is specified as the step No., set the condition to "Always".
● With the High-speed Universal model QCPU, only the first data which satisfies the specified conditions is collected if the
step between the FOR and NEXT instructions is specified.
Description
The monitor execution condition is established when both X0 and X1
are on.
Ladder mode
Step 2
X0 X1 X2
0
The monitor execution condition is established when X1 turns on. (The
on/off status of X0 does not affect the establishment of the monitor
execution condition.)
Ladder mode
Step 2
X0 X1 X2
0
X3
Monitor data is collected when the execution status of the instruction
right before execution becomes the specified status. If (Step No. [2] =
<ON>) is specified in the following ladder, monitor data is collected
when OUT Y10 turns on.
Ladder mode
X0
0
X1
2
CHAPTER 3 FUNCTIONS
List mode
0 LD X0
1 AND X1
Y20
2 AND X2
3 OUT Y20
List mode
0 LD X0
1 LD X1
2 AND X2
Y20
3 OR X3
4 ANB
5 OUT Y20
List mode
0 LD X0
Y10
1 OUT Y10
2 LD X1
Y11
3 OUT Y11
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