Siemens SINUMERIK 840Di Function Manual page 562

Detailed Description
2.5 Block search
Subsequent actions
After completion of a block search, the following subsequent actions may occur:
• Type 1 - Type 5: Automatic Start of an ASUB
• Type 1 - Type 4: Cascaded block search
2.5.1 Sequence for block search of Type 1, 2 and 4
Time sequence
The block search (Types 1, 2, and 4) proceeds as follows:
1. Activate search via input in HMI Advanced or HMI Embedded
2. Search target found, or alarm if target cannot be found
3. NC Start for output of action blocks
4. NC Start for program continuation.
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Note
For more information on block searches, refer to:
References:
/FB1/ Description of Functions Basic Machine; Auxiliary Function Output to PLC (H2),
Section: "Behavior on block search"
When the last action block is activated, a user program can be started as an ASUB.
A further block search with a different target specification can be started from "Search
target found".
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0