https://forge.codesys.com/forge/talk/Engineering/thread/4d7a0ffc68/2023-04-21T05:40:01.528000ZRecent posts to Mapping I/O variables directly to modbus register2023-04-21T05:40:01.528000Z2023-04-21T05:40:01.528000Zdomi-nikhttps://forge.codesys.com/u/domi-nik/https://forge.codesys.comb3f17c27ea0d9a2407140e6a665ecc84e4747cd4

<div class="markdown_content"><p>Alright, that was kinda what I had thought what would be the underlying problem. This seems like a good solution however, thanks!</p></div>

2023-04-15T08:47:51.767000Z2023-04-15T08:47:51.767000Ztimvhhttps://forge.codesys.com/u/timvh/https://forge.codesys.comdc8cfdc84c6df4fdf1e8a8247e12bc9f6883dd9f

<div class="markdown_content"><p>This is like creating two variables with the same name, so that doesn't work.<br/> A possible solution could be:<br/> - Double click on your device (where you also set the communication)<br/> - Go to PLC settings<br/> - At the Additional Settings - Enable symbolic access for IOs<br/> Now if your I/O module is named <em>_750_1405</em>, you can map the inputs directly on a Modbus output register: Application._750_1405.Digital_Inputs_0_15</p></div>

2023-04-14T10:16:08.228000Z2023-04-14T10:16:08.228000Zdomi-nikhttps://forge.codesys.com/u/domi-nik/https://forge.codesys.com02797a44ade65c6fc2f134f1294ed69d29f90f42

<div class="markdown_content"><p>Hello,</p> <p>i'm currently working on mapping I/Os (From a PFC200 -&gt; 750-1405 card) to the PLCs modbus.<br/> In the 1405s settings I have created my variables, when I want to use them in the Modbus Slave Device mapping using Application.Var I get the error: "'var' is already defined in 'IoConfig_Globals_Mapping'. Can I not map them directly? It does work if I use a variable in between those but that doesn't seem elegant.</p> <p>Thanks</p></div>