Siemens SINUMERIK 840Di Function Manual page 1037

Parameterization
Signal
WVar2
WVar3
WVar4
Addr1
Addr2
Note
The SETINT instruction is also used to make the assignment.
The ASUB PI service may only be executed when the channel to be activated is in Reset.
Only PRIO 1 is possible when selecting the ASUB via FB 4 and then starting it with FC 9.
References:
/PA/ Programming Guide
PI service: FINDBL
Activate block search
Function:
A channel is switched to block search mode and the appropriate acknowledgment then
transmitted. The block search is then executed immediately by the NCK. The search pointer
must already be in the NCK at this point in time. The search can be interrupted at any time
by an NC RESET. Once the search is successfully completed, the normal processing mode
is reactivated automatically. NC Start then takes effect from the located search target. The
operator is responsible for providing a collisionfree approach path.
Parameterization
Signal
PIService
Unit
WVar1
x: Describes the preprocessing mode
x = 1 without calculation
x = 2 with calculation
x = 3 with main block observation
Power Line Basic PLC Program (P3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Type
WORD
WORD
WORD
STRING
STRING
Type
ANY
INT
WORD
Value range
1 to 8
0/1
0/1
Value range
PI.FINDBL
1 to 10
x
Detailed description
2.12 Block descriptions
Meaning
Priority
LIFTFAST
BLSYNC
Path name
Program name
Meaning
Block search
Channel
Preprocessing mode
2-125