Siemens SINUMERIK 840D sl Function Manual page 1537

The modified version of the program call starts from here.
Here the call in OB 100 is displayed.
Here the call still remaining in OB 1 is displayed.
Note
Owing to this measure, a shorter cycle time is achieved in OB 1, because the static
parameter values need not be copied in the instance DB in each OB-1 cycle.
The savings of this variant:
The cyclic copying effort of 3 integer values and 4 ""ANY" parameters with respect to the
instance DB, which results from 3 time loading of a constant in the instance data block. In
case of each "ANY" transfer, constants are loaded in the data block 4 times with subsequent
transfer.
Basic logic functions: PLC basic program solution line (P3 sl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
CALL FB 2, DB 110 (
Req :=
NumVar :=
Addr1 :=
Line1 :
Addr2 :=
Line2 .
RD1 :=
RD2 :=
CALL FB 2, DB 110 (
Req :=
Error :=
NDR :=
State :=
FALSE,
2,
NCVAR.C1_RP_rpa0_0
W#16#1
NCVAR.C1_RP_rpa0_0
W#16#2
P#M 4.0 REAL 1,
P#M 24.0 REAL 1,
M0.0,
M1.0,
M1.1,
MW 2,
Detailed description
2.14 Programming tips with STEP 7
//Read 2 variables
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