Mitsubishi Q00JCPU User Manual page 85

3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
Basic
Note3.13
Note13
Basic
The fixed scan execution type programs are not available for the Basic model QCPU.
Note3.13
(c) Timers (T) and counters (C)
Timers and counters are not available for interrupt programs.
The timers (T) and counters (C) update the current values and turn ON/OFF the
contacts when the OUT T
Using a timer (T) and/or a counter (C) in an interrupt program update the current
value only during execution of the interrupt program.
Do not use them since measurement cannot be made correctly.
(d) Instructions not available for interrupt programs
For instructions not available in interrupt programs, refer to each instruction of
programming manual.
(e) When interrupt/fixed scan execution type program is executed for execution
time measurement, etc.
When an interrupt/fixed scan execution type program
measure the scan time or execution time using special registers, the time for the
program is added to the measured
The values stored into the special registers and the monitor values (measured
times) of GX Developer shown below increase when the program is executed.
1) Basic model QCPU
• Special registers
SD520, SD521 : Current scan time
SD524, SD525 : Minimum scan time
SD526, SD527 : Maximum scan time
SD540, SD541 : END processing time
SD542, SD543 : Constant scan wait time
SD548, SD549 : Scan execution type program execution time
• Monitor values of GX Developer
Scan time measurement
Constant scan
and OUT C instructions are executed, respectively.
time.Note13
3.1 Sequence Program
3.1.3 Interrupt programs
Note3.13
is executed to
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