Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Manual do Utilizador descarregar pdf (Página 167)

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Appendix B

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B-36

Synchronize with PLC-5 program scan. This function can be used with a

direct-connect mode control coprocessor only.

C Syntax

#include <copro.h>

unsigned CC_PLC_SYNC ( )

Parameters

None.

Returns

Status Symbolic Name Meaning

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Description

Use the CC_PLC_SYNC function to synchronize to the PLC-5

programmable-controller ladder scan. This routine will put the calling task

to sleep until the PLC-5 programmable controller signals the start of a new

ladder scan. Due to the multitasking of OS-9, it should be noted that this

function is most effective when only one task is synchronized to the PLC-5

programmable-controller scan and that task is a higher priority than the

other tasks.

C Example

unsigned status;

status = CC_PLC_SYNC();

CC_PLC_SYNC

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Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Manual do Utilizador Página 167