# Ignition Designer ModBus to OPCUA **URL:** \ **Category:** Ignition\ **Created:** [November 30, 2021, 10:30am UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563 "2021-11-30T10:30:47Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![r.relouzat](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@r.relouzat](https://forum.inductiveautomation.com/u/r.relouzat)\ **Post date:** [November 30, 2021, 10:30am UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/1 "2021-11-30T10:30:47Z")
Such a beginner i need help to link ModBus toward OPCUA for Tags, i either do not master nor lead OPC UA Server. I should receive an array from OPC UA Server, which has to jitte between #FFFF and #AAAA at his first array, but i m seeing nothing. Sorry my english is not so rich ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 30, 2021, 1:06pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/2 "2021-11-30T13:06:29Z")
Create a diagram for us, perhaps, with Ignition’s role identified. I’m not sure what part is supposed to do what. { Explique en français, aussi. Il y a beaucoup de francophone ici. Moi, un parti. J’ai une femme Français. } ---
**Author:** ![r.relouzat](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@r.relouzat](https://forum.inductiveautomation.com/u/r.relouzat)\ **Post date:** [November 30, 2021, 1:43pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/3 "2021-11-30T13:43:52Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/0/a031ad8ea43dfbce1cac1b7ba82287c76d6f78fb.png) Le serveur OPC vois bien le siemens connecté (OPC UA-\> [Device Connections] ---
**Author:** ![r.relouzat](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@r.relouzat](https://forum.inductiveautomation.com/u/r.relouzat)\ **Post date:** [November 30, 2021, 1:48pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/4 "2021-11-30T13:48:41Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/2/52d3083456a9be854af30c3959c5300faf7136bb.png) ---
**Author:** ![r.relouzat](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@r.relouzat](https://forum.inductiveautomation.com/u/r.relouzat)\ **Post date:** [November 30, 2021, 1:54pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/5 "2021-11-30T13:54:15Z")
Last Picture (Derniere image) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/0/1035295328233883cd15d507fd2cf283d47d52b3.png) ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 30, 2021, 1:57pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/6 "2021-11-30T13:57:49Z")
Vous avez besoins choisir le mode OPC ou le mode Modbus, ou, peut-ètre, le «driver» de IA pour Siemens. Propablement pas le mode Modbus. Mais, je n’ai pas d’experience avec Siemens… Je pense que vous avons besoin publire les «tags» dans le logiciel SIemens pour leur visibilité external. { J’ai utilisé Google pour l’aide grammaire. 😅 } ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 30, 2021, 2:03pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/7 "2021-11-30T14:03:40Z")
Avec le driver de Modbus de IA, vous avez besoins crea vos «tags» par les main. Vous pouvez pas «browse». Considerez-vous mon [module avancé pour Modbus](https://inductiveautomation.com/moduleshowcase/module/automation-professionals-llc-advanced-modbus) si il faut que vous utilisez «browse». Dans tout le deux cas, vous avez besoins saver les addrese Modbus pour vos «tags». ---
**Author:** ![r.relouzat](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@r.relouzat](https://forum.inductiveautomation.com/u/r.relouzat)\ **Post date:** [November 30, 2021, 2:07pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/8 "2021-11-30T14:07:55Z")
-Chez siemens on ne peut que chosir le mode Modbus. -Je suis bien connecté au serveur siemens. ✔ -Je ne sais juste pas comment récuperer les data(s), un tableau de world ici. -Nous avons déjà tenté de creer un tags manuellement sans succès. ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 30, 2021, 2:16pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/9 "2021-11-30T14:16:05Z")
Le driver de Modbus n’ai pas le support pour les tableau comme ça. Vous avez besoin crea chaque point individuellement. Utilisez le forme avec l’addrese de node, aussi. [https://docs.inductiveautomation.com/display/DOC81/Modbus+Addressing#ModbusAddressing-ModbusSpecificAddressing](https://docs.inductiveautomation.com/display/DOC81/Modbus+Addressing#ModbusAddressing-ModbusSpecificAddressing) Example: `[_s71517h3pn_]1.HR1` pour `400001` en forme «signed 16-bit». ---
**Author:** ![r.relouzat](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@r.relouzat](https://forum.inductiveautomation.com/u/r.relouzat)\ **Post date:** [November 30, 2021, 2:23pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/10 "2021-11-30T14:23:21Z")
En cours… je vous tiens au courant sur le resultat des manipulations… ---
**Author:** ![r.relouzat](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@r.relouzat](https://forum.inductiveautomation.com/u/r.relouzat)\ **Post date:** [November 30, 2021, 2:59pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/11 "2021-11-30T14:59:07Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/c/0ccd170cbc0b775f08436f6727a0082663c229b5.png) voici mon resultat, je recupere des valeurs qui ne sont pas exacte, car le siemens m’envoie une succesion de FFFF et AAAA sur HR1 (premier registre du tableau) alors que je recois -21846 et -1 ---
**Author:** ![r.relouzat](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@r.relouzat](https://forum.inductiveautomation.com/u/r.relouzat)\ **Post date:** [November 30, 2021, 3:01pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/12 "2021-11-30T15:01:29Z")
Success: ça fonction en changeant le Data Type en Integer Array ---
**Author:** ![r.relouzat](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@r.relouzat](https://forum.inductiveautomation.com/u/r.relouzat)\ **Post date:** [November 30, 2021, 3:16pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/13 "2021-11-30T15:16:33Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/8/0850a6361c9d14379a3214bf55d9d47c258e73d3.png) Merci d’avoir pris de votre temps pour m’aider 😉 👍 ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 30, 2021, 3:40pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/14 "2021-11-30T15:40:49Z")
> [@r.relouzat](#): > > FFFF et AAAA sur HR1 (premier registre du tableau) alors que je recois -21846 et -1 C'est les memes valeurs. En anglais: Unsigned hexadecimal versus signed decimal. ---
**Author:** ![r.relouzat](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@r.relouzat](https://forum.inductiveautomation.com/u/r.relouzat)\ **Post date:** [November 30, 2021, 3:50pm UTC](https://forum.inductiveautomation.com/t/ignition-designer-modbus-to-opcua/53563/15 "2021-11-30T15:50:05Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/d/fdbb354653f90c64b2fda3c06a3f13b1760b4e5e.png) oui exact 🤣