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Omron SYSMAC CV Series - Section 6 Program Execution Timing

Omron SYSMAC CV Series
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451
SECTION 6
Program Execution Timing
This section explains the execution cycle of the PC and shows how to calculate the cycle time and I/O response times.
I/O response times in Link Systems are described in the individual System Manuals. These manuals are listed at the end
of Section 1 Introduction.
6-1 PC Operation 452. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-1-1 Initialization 452. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-1-2 Asynchronous Operation 453. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-1-3 Synchronous Operation 455. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-1-4 I/O Refreshing 456. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-1-5 Power OFF Operation 458. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-1-6 Power OFF Interruption and Restart Continuation 461. . . . . . . . . . . . . . . . . . . . . . . .
6-2 Cycle Time 464. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-2-1 Asynchronous Operation 464. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-2-2 Synchronous Operation 467. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-2-3 Operations Significantly Increasing Cycle Time 468. . . . . . . . . . . . . . . . . . . . . . . . .
6-2-4 Potential Problems with Event Processing 469. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-3 Calculating Cycle Time 470. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-4 Instruction Execution Times 472. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-5 I/O Response Time 486. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-5-1 I/O Units Only 486. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-5-2 Asynchronous Operation with a SYSMAC BUS System 487. . . . . . . . . . . . . . . . . . .
6-5-3 Synchronous Operation with a SYSMAC BUS System 489. . . . . . . . . . . . . . . . . . . .
6-5-4 Asynchronous Operation with a SYSMAC BUS/2 System 490. . . . . . . . . . . . . . . . .
6-5-5 Synchronous Operation with a SYSMAC BUS/2 System 492. . . . . . . . . . . . . . . . . .

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