# OPC Server tag Produced/Consumed **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [October 30, 2024, 8:53pm UTC](https://forum.inductiveautomation.com/t/opc-server-tag-produced-consumed/97976 "2024-10-30T20:53:09Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![B\_Graham](https://avatars.discourse-cdn.com/v4/letter/b/779978/32.png) [@B\_Graham](https://forum.inductiveautomation.com/u/B_Graham)\ **Post date:** [October 31, 2024, 3:34pm UTC](https://forum.inductiveautomation.com/t/opc-server-tag-produced-consumed/97976/2 "2024-10-31T15:34:13Z")
Found a great link discussing what I am wanting to do. Still open to any ideas. Thanks again! > [@Read from A OPC device, write value to B OPC device/PLC](https://forum.inductiveautomation.com/t/read-from-a-opc-device-write-value-to-b-opc-device-plc/49325): > > Hi everyone, I’ve got a customer that wants to use Ignition as a middleware between OPC systems (A device and B device) on a production line. Ignition is to read values from OPC device A and then write changes into a PLC or other OPC device. My first thought was just to have tag event change scripts on the tags to write whenever a change was registered. My only concern is that there will be a lot of tags being managed all at the same time. For instance, a device could have hundreds of tags and… --- _[View the full topic](https://forum.inductiveautomation.com/t/opc-server-tag-produced-consumed/97976)._