5/22/2014 2:21 PM | |
Posts: 73 Rating: (6) |
Hi, I have my reservations on whether the module you stated i.e. 6ES7322-1BL00-0AA0 would support IO redundancy. You could provide all the external hardware like Diode-ORing, but accessing the higher address (redundant address) while using only the lower address in program may not be possible. The digital output module which supports channel granular functionality is 6ES7 322-8BH01-0AB0. In case of this module, Diode ORing need not be considered externally as the same is in-built into module circuitry. Refer attached document for more information on how to configure IO redundancy. Regards, Krrish !! AttachmentM:\MANUALS_DUMP\wiring_red_IO_en.pdf (382 Downloads) |
Last edited by: Krrish !! at: 5/22/2014 2:22 PM |
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5/23/2014 10:01 AM | |
Joined: 7/2/2008 Last visit: 9/25/2024 Posts: 928 Rating: (308) |
HelloKrrish, I'm afraid some members may get confused by your post. I must admit I didn't understand everything you said but6ES7322-1BL00 issuitable for IO redundancy.
1- It is a PCS7 document. (Itis a bit old.The new one ishere). You can use it to understand how to configure redundant IO's in HW configuration window but always keep in mind that PCS7 is somehow different to SIMATIC STEP7. For example, In SIMATIC STEP7 you will use one library for switched and centralized redundant IOs while in PCS7 you can't configure/program centralized redundant IOs without the Advanced Process Library.
2- In the400H manualyou can find that all modules are now supported by library V5.X which is the latest library for channel group specific redundancy.
3- Regarding digital outputs, there's no big advantage of channel redundancy since channel diagnostic is normally disabled for redundant modules. So, diagnosing a channel fault in non fail safe modules rarely happens. Also both outputs have the same value in normal operation and losing one channel will not do any harm to the output signal. Best regards, H-H |
This contribution was helpful to3 thankful Users |
5/29/2014 7:41 AM | |
Posts: 63 Rating: (4) |
yes group specific is possible |
5/29/2014 1:43 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839) |
Hello PPPD,
Hope this helps. |
Last edited by: Ayman Elotaify at: 5/29/2014 1:44 PMAyman Elotaify |
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