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Software Redundancy in S7-300

Created by: Raednabeel at: 11/7/2009 10:51 AM (2 Replies)

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11/7/2009 10:51 AM	Rate (0)
Raednabeel Posts: 96 Rating: (7)	Dear All, In software redundancy , one have to use - FB101 ‘SWR_ZYK’- at the beginning and at the end of the backup PLC program , as described in the PDF . If the backup PLC program exists on many OBs - lets say OB1 and OB35 - must I use the FB101 in both locations , OB1 & OB35 with same procedure described above ? I hope you can help. With my Respect
Raednabeel Posts: 96 Rating: (7)
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11/9/2009 8:53 AM	Rate (1)
H-H Platinum Member Joined: 7/2/2008 Last visit: 9/14/2023 Posts: 928 Rating: (303)	Hello Raed, You should use FB101 either in OB1 or in OB35 (Only once). If yourcode is located in many OB's then you should always put your code between the jump and label to make sure it's not executed if the CPU is a reserve one. Best regards. H-H

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1/30/2010 7:17 AM	Rate (0)
Raednabeel Posts: 96 Rating: (7)	Thank you very much
Raednabeel Posts: 96 Rating: (7)
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This contribution was helpful to 1 thankful Users H-H

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