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A
A-3 Inner Workings of CP1L
SYSMAC CP1L Getting Started Guide
113
Ap
pend
ix
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Example Calculation of Cycle Time
An example for
4-2-2 Ladder Programs
is shown.
The following conditions apply:
• CP1L 14-point I/O unit is used.
• No expansion units are used.
• No connections are made, i.e. with CX-Programmer.
Process Name
Formula
Processing
Time
Overseeing processes
-
0.4ms
Program execution
Sequential input instructions
LD 0.55µs x 6 instructions
OR 0.68µs x 6 instructions
AND NOT 0.65µs x 7 instructions
Sequential input instructions (differentiated) 5.5µs x 1
instruction
Sequential output instructions 1.1µs x 3 instructions
Timer instructions 6.4µs x 1 instruction
Counter instructions 6.7µs x 1 instruction
END instruction 6.2µs x 1 instruction
0.04ms
Cycle time calculation
N/A
0ms
I/O refreshing
N/A (no expansion unit)
0ms
Peripheral services
N/A (no connection)
0ms
Cycle time
0.44ms
W07E-EN-02+CP1L+GettingStartedGuide.book Seite 113 Montag, 15. September 2008 11:15 11