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How many tags can be called from TIA PORTAL WINCC V16 and V17 OPC license?

6/19/2023 10:17 AM	Rate (0)
zeeshanahmad Member Joined: 11/23/2012 Last visit: 7/26/2023 Posts: 14 Rating: (0)	HI, Will you guide me regarding tags limit for OPC server in WINCC Professional/advanced in TIA PORTAL v16 AND v17 ? How many tags we can call from single built in TIA PORTAL WINCC V16 and V17 OPC license ? ------------------------------------------------------------------------------------------ Split from MODBUS COMMUNICATION B/T DCS SYSTEM & PYTHON .
	Last edited by: Jen_Moderator at: 06/19/2023 12:52:46 New subject after splitting
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6/19/2023 8:31 PM	Rate (0)
Hazard_7 Advanced Member Joined: 5/30/2022 Last visit: 4/28/2025 Posts: 634 Rating: (103)	Hi zeeshanahmad, The limit is not by version either V16 or V17 but by range of PLC, I attach information about it: What are the system limits of the OPC UA Server with S7-1500 and S7-1200?
	If this information really helps, you could use the Rate function. Best Regards.
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6/20/2023 12:11 PM	Rate (0)
zeeshanahmad Member Joined: 11/23/2012 Last visit: 7/26/2023 Posts: 14 Rating: (0)	HI, Noted Thanks for your reply. But I want to ask that I am using TIA Portal WINCC V16 and calling multiple PLC client using OPC server in TIA portal V16 directly to WINCC for display. I am just using WINCC OPC so my question is what is the limit of WINCC OPC built in license have ? Rg, Zeeshan

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6/23/2023 10:11 AM	Rate (0)
Murof Platinum Expert Joined: 8/3/2009 Last visit: 4/28/2025 Posts: 15368 Rating: (1895)	Hello zeeshanahmad there are limits for tags ina general sight and also with OPC UA CLient connections but not for the amount of Tags you can access with OPC Clients from outside... https://support.industry.siemens.com/cs/ww/en/view/109815056/149280616843 I think you will have to make performance tests for bigger amounts. Bye Murof
	Last edited by: Murof at: 06/23/2023 10:12:16 If this Information really helps, you could use the Rate function
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