Monitor Function Of The Main Cycle - Mitsubishi Electric Q173CPU Programming Manual

17 MONITOR FUNCTION OF THE MAIN CYCLE

17. MONITOR FUNCTION OF THE MAIN CYCLE
Refer to Section "1.3.4" for the correspondence version of the Motion CPU and the
software.
(1) Information for main cycle of the Motion CPU processing (process cycle executed
(2) Since the automatic refresh of shared CPU memory and normal task of Motion
(3) There are following methods to shorten a main cycle.
(4) When a main cycle is lengthened (more than 1.6[s]), a WDT error may occur in
(5) Details of main cycle monitor register is shown below.
D9017 Scan time
D9019 Maximum scan time
at free time except for motion control) is stored to the special register.
SFC program are executed in the main cycle, make it reference for process time,
etc. to program.
(a) Lengthen an operation cycle setting.
(b) Reduce the number of event task programs to execute in the Motion SFC
program.
(c) Reduce the number of normal task programs to execute simultaneously in
the Motion SFC program.
(d) Reduce the number of automatic refresh points of shared CPU memory.
the Motion CPU.
No. Name
Current scan time
(1ms units)
Maximum scan time
(1ms units)
Meaning
• Current scan time is stored in the unit 1[ms].
• Setting range (0 to 65535[ms])
• Maximum main cycle is stored in the unit 1[ms].
• Setting range (0 to 65535[ms])
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Details
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