In s5 program,at the step which caused error,the outputs Q20.0&Q20.1 be on although I didnt find them in the cross reference
Created by: Eng_Mahmoud at: 10/11/2010 2:50 PM (2 Replies)
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| 10/11/2010 2:50 PM | |
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Posts: 12 Rating:
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Dears I have another question?? In s5 program,at the step which caused error,the outputs Q20.0&Q20.1 be on although I didnt find them in the cross reference...!!!!!!!!!!! Pleae advice Splitted from S5 to S7 Conversion Problem. |
Last edited by: O_Moderator at: 10/13/2010 8:15 AMLast edited by: O_Moderator at: 10/13/2010 8:14 AMnew subject after splitting |
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| 10/13/2010 9:20 AM | |
Joined: 10/7/2005 Last visit: 12/19/2025 Posts: 3052 Rating:
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Hello Eng_Mahmoud you are correct, they are not in the X-ref, nor is there any Byte,Word or DWord "overlapping" access to them taking place. As you logicseems to contain only pure LADDER we can also exclude indirect adddressing as apossible cause which only leaves me with the following advise: 1.) Do you perhaps have some "rogue" logic leftover in the CPU (which is not in your offline backup, I suggest you compare offline with online to find out). 2.) How do you know that Q20.0 & Q 20.1 are ON (are their LED's lit?,do you measure output Voltage?). I hope this helps |
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Cheers |
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| 10/13/2010 1:36 PM | |
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Posts: 12 Rating:
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Dear Sir many thanks for your replying 1.) Do you perhaps have some "rogue" logic leftover in the CPU (which is not in your offline backup, I suggest you compare offline with online to find out). Note:this outputs are spare ,not wired from PLC Module I will try to compare them when I will to go to site tomorow 2.) How do you know that Q20.0 & Q 20.1 are ON (are their LED's lit?,do you measure output Voltage?). Yes,the leds be ON and when measuerd gives me 24VDC ... |
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