User`s manual

10 - 3
10.1 Scan Time
10.1.2 Time required for each processing included in scan time
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CPU MODULE PROCESSING TIME
(3) Instruction execution time
The instruction execution time is the sum of processing times of the instructions used
in the program to be executed by the CPU module.
Refer to the following manual for the processing time of each instruction.
QSCPU Programming Manual (Common Instructions)
(4) Execution time of various functions processed at END
The execution time for each function processed with END is the total of the time
required for reading out the clock data and error ending.
(a) Reading out the clock data processing time
This is the time for reading out the clock data in END processing when a clock
data read request (SM213 ON) is executed.
(b) Error clear processing
This indicates the time taken to clear the continuation error stored in SD50 when
SM50 (error clear) rises (changes from OFF to ON).
(5) Service processing time
Service processing indicates the processing for communication with GX Developer
• Monitor by GX Developer
This indicates the processing time taken to execute monitor by GX
Developer.
* 1 : Time taken to read an 8k-step program from the program memory.
* 2 : Time taken when 32 points have been set in registration monitor.
* 3 : Time taken when a 100-step ladder is added.
* 4 : Time taken to update the display, specifying [All log].
Table10.1 Calendar update processing time
CPU module
When clock data read request
is issued
QS001CPU 0.02ms
Table10.2 Error clear processing time
CPU module Error clear processing time
QS001CPU 0.13ms
Table10.3 Monitor processing time by GX Developer
Function QS001CPU
Read of program from PLC
*1
1.4ms
Device monitor
*2
1.0ms
Online change
*3
4.0ms
Operation/error history display
*4
6.1ms