FC98 DP Error Circuit
CALL "DP-Diagnoseauswertung"
CHECK_ACTIV :="M0.0"
EXTERNAL_DP_INTERFACE :=FALSE
DP_MASTERSYSTEM :=1
SUM_SLAVES_NOT_PRESENT :=DB99.DBW0
LIST_SLAVES_NOT_PRESENT:=P#DB99.DBX 10.0 DWORD 4
SUM_SLAVES_ERROR :=DB99.DBW40
LIST_SLAVES_ERROR :=P#DB99.DBX 50.0 DWORD 4
RETVAL :=DB99.DBW70
BUSY :=DB99.DBX80.0
这段程序定义的什么意思,我刚接触西门子PLC,看不懂请大家指教!