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Technical Description
2.6.2 Estimating the Scan Time
The scan time has been divided into various units in the figures below to help you estimate the
program runtime and thus the amount of time needed to scan the program.
The values shown below are only guidelines, and may differ depending on the configuration of
the system involved.
The scan time is divided into user time and system time.
User time
Figure 2-13 shows how the user time is subdivided. Table 2-5 provides information on estimated
times.
Scan cycle control
Read PII
Read IPC
flags
User program
2-22
System time
Figure 2-12. Subdivision of the Scan Time
Output PIQ
Output IPC
flags
Figure 2-13. User Time (T
S5-115U Manual
)
A
EWA 4NEB 811 6130-02b
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