Mitsubishi MELSEC QS Series, User Manual

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10
CPU MODULE PROCESSING TIME
10.1 Scan Time
10.1.3 Factors that increase the scan time
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10.1.3 Factors that increase the scan time
When the following functions or operations are performed, this will increase the scan time
of the CPU module.
When executing any of them, make sure to allow for the processing time (the value given
in this section to the value calculated in Section 10.1.2).
(1) Online change executed in ladder mode
The scan time increases by the value indicated in Table10.5 after online change.
(2) Functions that increase scan time
The scan time also increases by use of the following functions.
• System monitor
• General data processing
Table10.5 Increased time when online change is in ladder mode
CPU module model name
Allocate memory for online change
No change Re-setting
QS001CPU Max. 1.7ms Max. 36ms