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Posted: 2025-05-23 08:13 AM
Hello,
I'm trying to read around 190 registers by DTM Browser in M580 through BMENOC301_2:
1. First Request: 125 Registers.
2. Second Request: 71 Registers.
but I received only the first 125 Regiters, Can I toggle the requests cyclically by disabling connection bits (I don't know where they are)?
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Posted: 2025-05-28 05:25 AM
You shouldn't need to toggle connection bits. All the registers should be read. A device DDT is created for this connection. See below. Free0 is the data for your first request and Free1 is the data for your second request.
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Posted: 2025-05-31 05:02 AM
Thanks for your reply @ciupol
I have already implemented it the same way, but it didn't work.
It only accepts the first request.
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Posted: 2025-06-02 06:52 AM
Not sure what you are communicating with but is it possible that your Modbus device supports only single connection?
According to NOC301 manual (below), turning connections ON/OFF is possible by object ID. I have never done this and I am not sure what does that mean.
If your device truly supports only single connection it may be easier for you to use READ_VAR block rather then use DTM browser.
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