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8/15/2008 1:48 PM | |
Posts: 4 Rating: (1) |
I have a very strange problem and would like to learn your suggestions. Today, i set up a profibus network .The communication works successfully, i can see all nodes in master's HW config and all nodes are OK. The network consists of 3 nodes , all including CPU315-2DP v2.6 . One of the slaves is a demo plc for now, there is nothing wrong with it. The problem is on the other slave. This slave switches to RUN mode, there is no fault on it. HW diagnostics says module is 'available and OK'. However, no output gets energised even i see them energised in online connection to software. In software the output is '1' but on the output modules, all outputs are '0'. When i download a configuration that does not include Profibus slave configuration, the CPU starts to run properly. I am not very experienced in profibus networking. I don't know how to address info that will be transferred. I think that the problem might be due to a addressing conflict i made while configurating profibus. To make sure, i changed one of the DQ modules address range. It was Q16..17 before and was not working. when i changed the range to Q126..127, and wrote a network to energise q126.0, i saw that the output worked. In the configuration of that slave only one row exists: Row:1 Mode:MS Partner DP address:34 Partner Adress: O234 Local Address: I534 Lenght: 1 Byte I am confused. I have; digital inputs : I0..15 digital outputs: Q16..21 Analog inputs: PIW384...431 Analog outputs: PQW432..463 So, i could not understand where the conflict is. I534 is free in my configuration. What are your opinions? Please find the project on the attachment. Best Regards, Emre AttachmentKule4__2.zip (221 Downloads) |
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