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1/28/2011 1:03 PM | |
Posts: 4 Rating:
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Hello dchartier I have two questions regarding OB and S7-400H. 1. I found out that I need the OB80 and saw also in the system maual that it is recommended preveting CPU stop. I belive this is only neccesary (in my case anyway) when changing the HW-Configuration(HWC) online. This is then only valid for a short time but if I would get an another error OB80 will be called and the performance could be bad. What time can I expect to delay normal operation changing HWC online? This time plus margin is the time I would like to accept in my program otherwise STOP or alarm. [schnippschnapp] second question is splitted to Is there any way of summarize the possible senarios/effects you can get by having a OB121 in the CPU?. Thank you. |
Last edited by: O_Moderator at: 1/28/2011 2:13 PMnew subject after splitting |
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