18.2.7 Extended synchronization and communication functions (mutexes)

The following shows the service calls provided by the RI600V4 as the extended synchronization and communication functions (mutexes).

Table 18-9 Extended Synchronization and Communication Functions (Mutexes)

Service Call	Function	Useful Range
loc_mtx	Lock mutex (waiting forever)	Task
ploc_mtx	Lock mutex (polling)	Task
tloc_mtx	Lock mutex (with time-out)	Task
unl_mtx	Unlock mutex	Task
ref_mtx	Reference mutex state	Task