plc_go_state
plc_go_state(smc,np,PL_PCM_STOP) ;
plc_go_state(smc,np,PL_PCM_STOP) ;
plc_go_state(smc,np,0) ;
plc_go_state(smc,np,PL_PCM_STOP) ;
plc_go_state(smc,np,PL_PCM_STOP) ;
plc_go_state(smc,np,PL_PCM_START) ;
plc_go_state(smc,np,PL_PCM_TRACE) ;
plc_go_state(smc,np,PL_PCM_STOP) ;