Siemens SIMATIC S5 - Page 54

Operating Instructions R 02/92
4) Interrupt processing
OB2
– Save scratchpad flags
- Interrupt processing with FB 157 (BEF = KB)
– Evaluate the interrupt bits; in case of interrupt, jump on interrupt program
FBX1 or FBX2
– Reload the scratchpad flags
5) Interrupt programs
FBX1
– Change over to crawl speed
FBX2
– STOP
2 – 20
1P 241 Equipment Manual
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