Mitsubishi Q02CPU

3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
3.1 Sequence Program
3.1.3 Interrupt programs
3
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1
Overview
2
Performance Specification
3
Sequence Program Configuration and Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files Handled by CPU Module
6
Functions
7
Communication with Intelligent Function Module
8
Parameters
(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 and OUT C instructions are executed, respectively.
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
Note3.13
is executed to
measure the scan time or execution time using special registers, the time for the
program is added to the measured time.Note13
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
Note13
Basic
Note3.13
The fixed scan execution type programs are not available for the Basic model QCPU.
Basic
Note3.13