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6ES7 315-2EH14 CPU Communication with multiple HMI's

1/17/2026 7:45 AM	Rate (0)
M. Arslan Ahmad Joined: 1/10/2023 Last visit: 1/17/2026 Posts: 10 Rating: (0)	I am using 6ES7 315-2EH14 CPU and I have more than 15 devices that I want to communicate with it using ethernet port of the CPU. But I'm not able to communicate more than 15 devices with it. How can I do that? I also tried to communicate one device using profibus port it alone communicates but when other devices communicate then it doesn't.

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1/23/2026 8:28 AM	Rate (0)
Tarwar Expert Joined: 7/31/2020 Last visit: 1/23/2026 Posts: 518 Rating: (24)	Hello, It could be due to the maximum number of S7 connections. This is a maximum of 14. 6ES7315-2EH14-0AB0 Technical Data Best regards

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