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Which PN module for 312?

2/22/2022 9:44 AM	Rate (0)
Cadej_Chudej Regular Member Joined: 10/11/2018 Last visit: 10/16/2025 Posts: 51 Rating: (2)	Hello, which profinet/ethernet communication module should i use with cpu 312? Due to long term delivery of 315-PN CPU we are forced to use 312 and buy PN module for 312, but what module to select? I started working in PLC industry when 1200, 1500, et200sp etc was new standart so i really don't have much experience with older cpus (only programing them) but not selecting right communication module for them. :)

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2/22/2022 10:53 AM	Rate (1)
Wizard Diamond Expert Joined: 4/24/2006 Last visit: 1/8/2026 Posts: 9104 Rating: (1202)	Hello, Depends on the following: Why do you need an Ethernet interface? Have a look here: What differences are there between the Industrial Ethernet CPs of SIMATIC S7-300? Best regards, Wizard

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2/22/2022 10:56 AM	Rate (1)
Towome Platinum Expert Joined: 7/9/2015 Last visit: 1/7/2026 Posts: 4493 Rating: (644)	Hi, you can use CP343-1 but please check if your S7-312 PLC is compatible to it. Check manual of CP - in Chapter 3 you will find a Table with which PLC the CP can be used. SIMATIC NET: S7-300 - Industrial Ethernet / PROFINET CP 343-1 - part B Regards, Towome
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