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programming of OBs in simatic manager

Created by: umair984 at: 7/28/2012 11:38 AM (2 Replies)

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7/28/2012 11:38 AM	Rate (0)
umair984 Posts: 2 Rating: (0)	Hi All, im new to simatic S7 programming, i want to know that how we program different OBs like OB81 (power supply error), OB86 (rack failure) and OB100 (warm restart). i saw in the manual and in the software there are few temp variables given in these OBs, what is the purpose of these temp variables? what they denote? and how they are used in programming? Do all the OBs programmed in the same manner. what is time of day interrupt and time delay interrupt. a detailed reply is requested, for which will be very thankful to you. Kind Regards, Umair Ahmed
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7/28/2012 2:34 PM	Rate (0)
manmeet Gold Member Joined: 1/3/2006 Last visit: 2/19/2024 Posts: 726 Rating: (71)	Hi Umair just a tip not an answere. If you are new to Simatic just leave those OB's blank no need to program them. Concentrate on application which you have in your hand. Keeping those empty OBs will prevent CPU to enter stop mode if something goes wrong. Also you can do thishttp://tinyurl.com/cw2qd9j

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7/28/2012 3:12 PM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating: (1365)	umair984 Hi All, im new to simatic S7 programming, i want to know that how we program different OBs like OB81 (power supply error), OB86 (rack failure) and OB100 (warm restart). i saw in the manual and in the software there are few temp variables given in these OBs, what is the purpose of these temp variables? what they denote? and how they are used in programming? Do all the OBs programmed in the same manner. what is time of day interrupt and time delay interrupt. a detailed reply is requested, for which will be very thankful to you. Kind Regards, Umair Ahmed Hello, Chapter one "Organization Blocks" will give you very detailed explanation of OBs you asked and all their parameters described thoroughly. System Software for S7-300/400 System and Standard Functions Volume 1 and Volume 2 To master how to use them efficiently ,I suggest reading each case carefully,test your findings,search the forum for answer of your problems and finally ask here if they are not solved. Best regards, Hamid Hosseini
	Last edited by: hdhosseini at: 7/28/2012 3:16 PM Demo Channel on Youtube
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