310
(3) Execution of multiple programs
Use the following formula to calculate the increase in scan time when executing multiple programs.
[Increase in the scan time]
Number of program files to be executed × KM1 [ms]
(4) Removal and insertion of an SD memory card
The following shows the increase in scan time when an SD memory card is inserted or removed.
(5) Scan time measurement
Use the following expression to calculate the increase in scan time when the scan time is set to be measured.
[Increase in the scan time]
KM1 + number of branch instructions
*1
× KM2 [µs]
*1 The number of branch instructions is a total of the following pointer branch instructions and structure creation
instructions, which are executed between a start point and an end point of the scan time measurement.
• Pointer branch instructions: CJ, SCJ, JMP, GOEND
• Structure creation instruction: CALL(P), FCALL(P), ECALL(P), EFCALL(P), XCALL(P), BREAK, NEXT, RET
(6) A series CPU module compatibility setting
The following shows the increase in scan time when an A series CPU module compatibility setting is enabled.
CPU module KM1
L02CPU 0.024
L26CPU-BT 0.02
CPU module
Increase in scan time
When an SD memory card is inserted
When an SD memory card is
removed
L02CPU 0.52 [ms] 0.49 [ms]
L26CPU-BT 0.31 [ms] 0.23 [ms]
CPU module KM1 KM2
L02CPU 40.0 1.7
L26CPU-BT 40.0 3.0
CPU module Increase in scan time
L02CPU 40 [µs]
L26CPU-BT 34 [µs]
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