PDCOMM_BACKPRESSURE

Macro

Work cannot be accepted until earlier work is drained.

#define PDCOMM_BACKPRESSURE INT32_C(9)

Declared in: #include <pdcomm_secs1.h>

Same value as in pdcomm_tcp.h; defined here so this header is self-contained. For SECS-I it means that a staged event must be retrieved with pdcomm_secs1_next_event(), that the event queue is full, or that another submitted message is still being sent.