AdvancedHMI Software

General Category => Open Discussion => Topic started by: lgrimm on April 03, 2017, 08:07:36 AM

Title: ModbusTcp/Ip Reading 32 bit Integer
Post by: lgrimm on April 03, 2017, 08:07:36 AM

Hi:
I am having difficulty reading a 32 bit Integer register. It is designated as a being read with function code 3 and accessed as a complete unit.
Need to read address 5101 or 5102 adding 1 for Modicon compatibility.

I am being able to read 32 floating point registers as for example F47102, which is designated as 7101. But because of Modicon compatibility am adding 1 address number.

Thanks

Lee

Title: Re: ModbusTcp/Ip Reading 32 bit Integer
Post by: Archie on April 03, 2017, 09:13:52 AM

Modicon style addressing starts with an offset of 1, so your address should be L45102