Siemens SINUMERIK 840D sl Function Manual page 1386

Detailed description
2.12 Block descriptions
S7 (ALIAS) names have been selected in order to:
• Incorporate the channel designation into the name
• Remove the characters [ ], which are not legal in a STEP 7 symbol.
Entry of the name in the S7 SYMBOL table (e.g. NCVAR for DB120):
Symbol
NCVAR
File DB120.AWL must be compiled and transferred to the PLC.
Parameterization of FB 2 with instance DB 110:
DATA_BLOCK DB 110
FB 2
BEGIN
END_DATA_BLOCK
Function FC "VariablenCall": VOID
112
and
U I 7.7;
S M 100.0;
U M 100.1;
R M 100.0;
U I 7.6;
U M 102.0;
R M 100.0;
CALL FB 2, DB 110 (
Req :=
NumVar :=
Addr1 :=
Addr2 :=
Addr3 :=
Error :=
NDR :=
State :=
RD1 :=
RD2 :=
RD3 :=
Operand
DB 120
//Unassigned user DB, as instance for FB 2
//Unassigned machine control panel key
//Activate req.
//NDR completed message
//Terminate job
//Manual error acknowledgment
//Error pending
//Terminate job
M 100.0,
3,
NCVAR.C1AxConfMachAxUsed1,
NCVAR.C1AxConfMachAxUsed2,
NCVAR.C1SpindDefMasterSpind,
M102.0,
M100.1,
MW104,
P#DB99.DBX0.0 BYTE 1,
P#DB99.DBX1.0 BYTE 1,
P#M110.0 INT 1);
Basic logic functions: PLC basic program solution line (P3 sl)
Data type
DB 120
//Read 3 variables
Function Manual, 11/2006, 6FC5397-0BP10-2BA0