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Hello
I searched the forums but couldn't find a similar post.
I have Step7 V5.4 SP3. I am building the hardware for a redundant system. CPU is 412-3H.
All IO are to be failsafe and ET200m. I have no trouble placint the IM153-2 for redundant systems on both profibus netorks. I need two racks for my IO system as you can only have 5 failsafe modules in a rack.
Problem is I cannot find any failsafe IO in my catalog. I have updated it twice but still no modules. I have searched manually and used the search tool.
Any ideas? Do I need to have the redundant step 7 add on?
thanks
John
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