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How can I change mac address of CP443-1

8/22/2024 8:44 AM	Rate (0)
mohammad_m Joined: 6/10/2024 Last visit: 9/24/2025 Posts: 17 Rating: (1)	Hi experts How can I change mac address of CP443-1? Is it possible ?

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8/22/2024 9:15 AM	Rate (0)
Rotkäppchen Regular Member Joined: 2/24/2011 Last visit: 1/16/2026 Posts: 97 Rating: (10)	Hi, yes, It's possible. Check the settings of your S7-400 PLC in STEP 7 HW-Config.

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8/26/2024 11:19 AM	Rate (0)
mohammad_m Joined: 6/10/2024 Last visit: 9/24/2025 Posts: 17 Rating: (1)	I don't mean to set the MAC address based on what is engraved on the card. My view was that by specifying the desired mac address and downloading the program on the AS, the mac address of the CP443-1 card will change, and after downloading the program, the mac address of the card will be different from what is written on it.

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8/26/2024 5:03 PM	Rate (0)
danw Gold Expert Joined: 3/28/2010 Last visit: 1/15/2026 Posts: 1209 Rating: (222)	I seriously doubt that the hard-coded MAC address on a Siemens module can be changed. Siemens plays by the rules (try to download a DTM and see the hoops one has to jump through.

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