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ET200S I/O Modules Addressing Issue

Created by: andrew_pj at: 9/5/2014 4:04 AM (4 Replies)

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9/5/2014 4:04 AM	Rate (0)
andrew_pj Posts: 30 Rating: (0)	Dear all, I use IM 151-8 PN/DP CPU with 2 DI (6ES7 131-4BF00-0AA0), 2DO (6ES7 132-4BF00-0AB0), and 1AI (6ES7 134-4MB02-0AB0). Currently I am testing the PLC and already connecting the wiring from I/O Modules to TB and relays. However, finding out that the addressing is not match with the LED in module. Since the wiring is following LED's number, so it becomes an issue. In I/O module the LED arrangement is like below: 1 5 2 6 3 7 4 8 But the addressing in PLC is as below: 0 1 2 3 4 5 6 7 Please advise a solution regarding this issue. I am expecting either configuration method in PLC or official documentation about the I/O module wiring. Thank you. Best regards, Andrew
andrew_pj Posts: 30 Rating: (0)
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9/5/2014 4:44 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 6/9/2023 Posts: 2969 Rating: (1025)	Hello andrew_pj its always been like that for the ET200S and the corresponding information is in the manuals (e.g. SIMATIC ET 200S distributed I/O Digital electronic module 8DI DC24V (6ES7131-4BF00-0AA0), but you are not the first one to fall into that "trap" if that is of any consolation). Solutions are to either physically rewire the ET200Sor to do a software "rewire" of your S7 program. I hope this helps
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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9/5/2014 5:44 AM	Rate (0)
Navnag Platinum Expert Joined: 11/21/2007 Last visit: 6/1/2023 Posts: 2321 Rating: (303)	Hello andrew_pj Don't worry, you are not alone in this. Many people make this mistake, the first time that they use ET200S 8DI / 8DO Modules . I have often wondered, why such a confusing terminal numbering has been use. Probably a design limitation. I must admit that I had also made the same mistake the first time we used these modules. Fortunately it was detected during factory testing stage and could be easily rectified. The easiest and the best solution is usually to change the wiring.That was you just need to change the module Pin Nos. on the drawings ( And maybe the ferrules ). Cheers Navnag
	Last edited by: Navnag at: 9/5/2014 5:46 AM There is no such thing as the last bug in a program There are no stubborn bugs, There are only stubborn Debuggers.
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9/5/2014 6:13 AM	Rate (0)
andrew_pj Posts: 30 Rating: (0)	fritz Hello andrew_pj its always been like that for the ET200S and the corresponding information is in the manuals (e.g. SIMATIC ET 200S distributed I/O Digital electronic module 8DI DC24V (6ES7131-4BF00-0AA0), but you are not the first one to fall into that "trap" if that is of any consolation). Solutions are to either physically rewire the ET200Sor to do a software "rewire" of your S7 program. I hope this helps Dear fritz, Thank you for the documentation link. I think physical rewiring might be fine in my case as only using few modules. Best regards, Andrew
andrew_pj Posts: 30 Rating: (0)
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9/5/2014 6:16 AM	Rate (0)
andrew_pj Posts: 30 Rating: (0)	Navnag Hello andrew_pj Don't worry, you are not alone in this. Many people make this mistake, the first time that they use ET200S 8DI / 8DO Modules . I have often wondered, why such a confusing terminal numbering has been use. Probably a design limitation. I must admit that I had also made the same mistake the first time we used these modules. Fortunately it was detected during factory testing stage and could be easily rectified. The easiest and the best solution is usually to change the wiring.That was you just need to change the module Pin Nos. on the drawings ( And maybe the ferrules ). Cheers Navnag Dear Navnag, Thank you for your reply. Yes, I agree rewiring might be the best solution as it is already mentioned in documentation. This seems like a 'prank' by Siemens. Best regards, Andrew
andrew_pj Posts: 30 Rating: (0)
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