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 Post subject: Modbus RTU Registers
PostPosted: Thu Oct 17, 2013 2:20 pm 

Joined: Thu Oct 17, 2013 2:07 pm
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I'm sure someody has asked this already, just can't seem to find it though. My question is what Modbus registers are available. The hardware I am trying to poll for data uses 30000 series Input Registers, but when I enter that into the controller field I get an error. 40000 series works fine, but data is in 30000 series. Problem also seems to be with 10000 series registers as well.


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 Post subject: Re: Modbus RTU Registers
PostPosted: Thu Oct 17, 2013 2:26 pm 

Joined: Tue Mar 13, 2012 9:53 am
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Take a look at the Controller documentation. Most likely you have the driver set to use HEX addressing and you are typing in Decimal addresses into the Controller Tag column.

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Mark Monroe

Beijer Electronics, Inc. | Applications Engineer


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 Post subject: Re: Modbus RTU Registers
PostPosted: Thu Oct 17, 2013 3:03 pm 

Joined: Thu Oct 17, 2013 2:07 pm
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Mark,
It's the standard MODICON driver, configured as a Modbus slave, the A& being the Master. I don't see anywhere I can select Hex or Decimal, even configure the driver. Sorry, very new to using iX Developer.


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 Post subject: Re: Modbus RTU Registers
PostPosted: Fri Oct 18, 2013 8:19 am 

Joined: Tue Mar 13, 2012 9:53 am
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The Modbus slave driver only supports Holding Registers in Decimal format. Which means that it will not allow you to use the 30000 or 10000 Modbus registers. The Modbus Master driver will allow you to read those other registers.

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Mark Monroe

Beijer Electronics, Inc. | Applications Engineer


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