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Mixing P- and Q-peripherie in ET200 M station

Created by: BeVee at: 11/15/2011 9:44 PM (2 Replies)

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11/15/2011 9:44 PM	Rate (0)
BeVee Gold Member Joined: 7/18/2011 Last visit: 6/6/2023 Posts: 521 Rating: (88)	Dear experts, I would like to know if the following configuration is possible: I have an S5-115U CPU945 equiped with an IM308C profibus card. I want to connect an ET200M decentral peripherie station to this card, which contains digital and analog inputs with IM153-1. The digital inputs are in the P-range; the analog inputs are in the Q-range. All configured addresses are free I can see the digital inputs in the program, but i cant get valid data from the Q-peripherie. Anyone knows if it is allowed to mix P and Q peripherie in one profibus node ? Kind regards, BV

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11/16/2011 2:00 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 6/6/2023 Posts: 2966 Rating: (1025)	Hello BeVee yes you can mix P and Q peripherie in one profibus node(see also HERE), so I'm not too sure what's wrong in your case. Things to check would be: 1.) Make sure touse "O" as the address identifier (e.g. L OW 174) in your S5 program for theconfigured "Q area" addresses(do NOT use "Q" in the S5 program as thisnominatesOutputs in the Process Image and this easily causes confusion as "Q" is also incorrectly used in the examples in Appendix B of the ET 200 Distributed I/O System manual). 2.) Make sure to set "Word consistency" for the "Q area"related moduleaddresses in the COM PB config. Should the above not help, pelase upload you COM PB config here and S5 program for evaluation.
	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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11/16/2011 12:41 PM	Rate (0)
BeVee Gold Member Joined: 7/18/2011 Last visit: 6/6/2023 Posts: 521 Rating: (88)	Fritz, Thank you for quick response. The problem was caused by faulty wiring. Mana was connected to wrong voltage. Kind regards, BV

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