3/16/2011 10:47 AM | |
Posts: 7 Rating: (0) |
Hi I'm a bit confused with the maximum allowable CP443-5 (Profibus DP) cards are allowed per rack. My configuration: (S7-400) - UR1 Rack (18 slots) - PSU - CPU (haven't decided on a specific S7-400 CPU yet) - CP443-1 (Industrial Ethernet) - CP443-5 (Profibus DP) - the rest IO Modules Looking at the CP443-5 manual, a maximum of 10 CP cardsare allowed. I'm using 1 x CP443-1 so that means I can add 9 x CP443-5 Profibus DP modules. But looking at the S7-400 CPU specs they state under DP Interfaces 3 options - Number of DP interfaces (1 or 2), number of DP slaves (32, 64 or 96) and plug-in interface modules (1 x or 2 x DP). Does this mean I can only add 1 or 2 CP443-5 modules to that PLC Rack? Thank you AttachmentSiemens S7-400 CPU brochure.pdf (156 Downloads) |
3/16/2011 11:23 AM | |
Joined: 10/7/2005 Last visit: 9/24/2024 Posts: 3022 Rating: (1054)
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Hello AndrePDNA the spec you are looking at lists only the number of possible CPU "onboard" DP interfaces. The specifciation you want to look at is the Automation System S7-400 CPU Specifications where you'll find the max permissible number of CP 443-5 (10 is the usual answer, note though also the the max number of overall CP's that you can have). Attached is an example pic for a 414-3 and I hope this helps. |
Cheers |
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3/16/2011 12:30 PM | |
Joined: 10/7/2005 Last visit: 9/24/2024 Posts: 3022 Rating: (1054)
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Hello AndrePDNA the IF 964-DP does NOT have its own manual. It is a simple plug in module for the CPU and described in the CPU specification (see previously supplied link). The IM467 is part of the generally useful to have SIMATIC S7-400 S7-400 Automation System Module Datamanual. Note that it has been phased out though (see HERE) and not worth trying to get anymore (it is also not DPV1 compliant). Even though you generally can have 124 DP Slaves per DP Master, it is not a bad idea to split your 90+ DP Slaves across two independent DP Master networks. Some 400 CPU's already have two DP Master ports onboard which may do the job for you. Other allow the addition of an IF 964-DPmodule, which would be my next chocie. If the above is not applicable for your 400 CPU, the CP443-5comes to the rescue. Last but not least, the SIMATIC NET PROFIBUS Network Manual System Manual is wortwhile having in your case and will (should) help with netwrok design and equipment decisions. . I hope this helps |
Cheers |
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3/16/2011 12:49 PM | |
Posts: 7 Rating: (0) |
Thanks for the advice Fritz. Appreciate it. |
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