Example For Better Comprehension Of The Ip241 - Siemens SIMATIC S5 Equipment Manual

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2.10 Example for Better Comprehension of the 1P 241
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Software synchronization
zero point (reference or synchronization point).
Output Q1.0 (Drive ON) is turned on.
At point '~ the final system speed is reached.
When point <~ is reached, change over to crawl speed (Q1.1 set).
When point ~ is reached, turn off (STOP).
After successful start-up
1) Specify setpoint in data block (IP 241)
2) Setup start-up organization blocks
– Save scratchpad fla s
– Call FB 156 arame erize)
– Call FB 157 EF = any) (delete interru ts after start-up)
– Software synchronization with FB 157 ( EF = SS)
– Reload scratchpad flags
3) Cyclic processing in OB1
– START (drive ON)
– Read actual value
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Operating Instructions
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