https://forge.codesys.com/forge/talk/Engineering/thread/c5cd0b4380/2020-02-27T14:17:20.667000ZRecent posts to IO SCANNING OVER MODBUS2020-02-27T14:17:20.667000Z2020-02-27T14:17:20.667000Zjzhvymetalhttps://forge.codesys.com/u/jzhvymetal/https://forge.codesys.comf6aadad1362d5e915c5be3778e8be44d17ddee45

<div class="markdown_content"><p>Normally I try to read the forum and answer posts. Sorry I had no time lately. If you want to read actual physical I/O through the Modbus Server you need to read as input(Modbus code 2H) and outputs(Modbus code 1H). See image below from the help file.</p> <p><img alt="IMG: M241_Modbus_Server.png" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=4158"/></p></div>

2020-02-27T14:17:20.289000Z2020-02-27T14:17:20.289000Zrmoudyhttps://forge.codesys.com/u/rmoudy/https://forge.codesys.com1fe477685b091e09ade328dc8eac3a5543355085

<div class="markdown_content"><p>Why not have the 3 controllers send the information over a CAN bus and use the 4th controller to read the information off the network? </p> <p>I'm not familiar with Ethernet protocol using controllers or else I would offer more help.</p></div>

2020-02-27T14:17:19.077000Z2020-02-27T14:17:19.077000ZAnonymoushttps://forge.codesys.com/u/*anonymous/https://forge.codesys.come8314537cf41595e5677dea0ea21ffd047235da5

<div class="markdown_content"><p><em>Originally created by:</em> ph0010421</p> <p>I hear you. <br/> I'm unfamiliar with the platform but hear regularly abour Schneider's poor support.</p></div>

2020-02-27T14:17:18.675000Z2020-02-27T14:17:18.675000Zdylwhittyhttps://forge.codesys.com/u/dylwhitty/https://forge.codesys.com6ea2e69ab5feda5ca97805977636dd1a814f875b

<div class="markdown_content"><p>It is who we bought the stuff from.... Believe it or not I have already contacted them on this, but to no avail.... Due to the fact that they use the Codesys platform I was hoping someone here may have the answer,</p> <p>Thanks anyway</p></div>

2020-02-27T14:17:18.267000Z2020-02-27T14:17:18.267000ZAnonymoushttps://forge.codesys.com/u/*anonymous/https://forge.codesys.com8ac3738971d1aada3c3561c982bd9555cb5d55f7

<div class="markdown_content"><p><em>Originally created by:</em> ph0010421</p> <p>I don't want to answer on behalf of 3s, but I think you'd get answers from the Schneider; that's who you bought the stuff from.</p></div>

2020-02-27T14:17:17.086000Z2020-02-27T14:17:17.086000Zdylwhittyhttps://forge.codesys.com/u/dylwhitty/https://forge.codesys.com08b3cd22dcb596d3d9ba0d6abebdde4c42e4e0c3

<div class="markdown_content"><p>Still no go?</p></div>

2020-02-27T14:17:16.671000Z2020-02-27T14:17:16.671000Zdylwhittyhttps://forge.codesys.com/u/dylwhitty/https://forge.codesys.com4a19a83dd69f1617a3245900011fd49af3d3ec35

<div class="markdown_content"><p>Any ideas on this issue?</p></div>

2020-02-27T14:17:16.267000Z2020-02-27T14:17:16.267000Zdylwhittyhttps://forge.codesys.com/u/dylwhitty/https://forge.codesys.coma26e0c04d73f29b013ece09af8496db91ded1204

<div class="markdown_content"><p>Hi, </p> <p>I'm very new to this, I am trying to get through an io scanning application between multiple PLC's using Schneiders SoMachine Software. The Application scans various VSD's and 2 Schneider M241 PLC's using another third M241 PLC whilst using an Ethernet expansion module. My question is how can I scan an actual variable as opposed to a memory word using this application, which I have succeeded in doing.</p> <p>i.e. Map to a %I0.0 or %Q0.1 etc as opposed to a %MW1 etc.</p> <p>Thanks</p></div>