11/24/2014 9:22 PM | |
Joined: 7/2/2008 Last visit: 8/26/2024 Posts: 928 Rating:
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HelloRandolphC, As far as I remember this problem may happen if, 1- You have both CPUs set to rack 0 or both set to rack 1. Sp, Please check that you have the rack switch set correctly. The switch is found in the rear of each CPU. 2- If you have flash memory with different programs loaded to each flash. 3- If you have different memory cards. In all cases, you should upload the diagnostic buffer so you would get more help. Since this is your 1st 400H system, you should read theS7-400H manual. Best regards, H-H
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11/26/2014 1:19 PM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating:
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Hello RandolphC, You have not uploaded diagnostic buffer of your CPUs here , but the following tip will help you to simplify the problem .In case of FLASH memories, if possible, remove the external memories and download the following organization blocks for the CPU and check the behavior.In case of :
OB70,OB72,OB80,OB82,OB83,OB85,OB86,OB87,OB88,OB121,OB122. Note: this procedure requires shutdown of the plant/ machine controlled by automation system. I hope this helps, Hamid Hosseini |
Last edited by: hdhosseini at: 11/26/2014 1:21 PM |
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