Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Manual de usuario Pagina 219

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Appendix B
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B-88
Clears the bit associated with the specified message number.
C Syntax
#include <copro.h>
unsigned MSG_CLR_MASK (mask,msg_num)
unsigned *mask;
unsigned msg_num;
Parameters
mask
Address of the read or write mask used with the MSG_WAIT function.
This function will reset the bit corresponding to the message number.
msg_num
Number of the PLC-5 programmable controller message (0-31).
Returns
Status Symbolic Name Meaning
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Description
Use the MSG_CLR_MASK function to clear bits in the message
read/write masks.
C Example
See MSG_WAIT on page B-102 for a complete example of asynchronous
message processing.
MSG_CLR_MASK
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