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363
SECTION 6
Program Execution Timing
The timing of various operations must be considered both when writing and debugging a program. The time required to
execute the program and perform other CPU Unit operations is important, as is the timing of each signal coming into and
leaving the PC in order to achieve the desired control action at the right time. This section explains the cycle and shows how to
calculate the cycle time and I/O response times.
6-1
Cycle Time
364
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-2
Calculating Cycle Time
368
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-2-1
PC with I/O Units Only
369
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-2-2
PC with Host Link and Remote I/O Master Units
369
. . . . . . . . . . . . . . . . . . . . . . . . .
6-3
Instruction Execution Times
371
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-4
I/O Response Time
380
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-4-1
Basic Systems
380
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-4-2
Remote I/O Systems
381
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-4-3
Host Link Systems
384
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-4-4
PC Link Systems
384
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-4-5
One-to-one Link I/O Response Time
387
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-4-6
Interrupt Response Times
389
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Содержание SYSMAC C200HE
Страница 1: ...Cat No W303 E1 09 OPERATION MANUAL Programmable Controllers C200HX C200HG C200HE ...
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Страница 3: ...C200HX C200HG C200HE Programmable Controllers Operation Manual Revised August 2004 ...
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Страница 586: ...W303 E1 09 ...