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| 5/24/2014 1:06 PM | |||||||||||||||||||
Joined: 7/2/2008 Last visit: 3/19/2025 Posts: 928 Rating:
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HelloGrim Reaper,
Since this is an H system, i think you need "Modbus/TCP PN RED" product.
To the best of my knowledge there's not direct solution you can make in this case. i believe you will have to handle two connections (one for each CPU) by yourself. I don't know if you can use the the same above library "Modbus/TCP PN RED" to establish redundant connection with your IM151-8 CPU. Some experts here may give you a more detailed answer. Yes. this is correct as the DP interface of the IM151-8 can't be a DP slave.
I assume no problems but honestly I don't have a tool to give you quantified measures/calculations. If you are going to buy "Modbus/TCP PN RED", maybe they can give you a hint on performance of PN ports while using this product. One last thing, the picture you have attached is a bit blurry. I can't get to some details. Could you edit your post and upload a more clear one. Best regards, H-H
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| 5/24/2014 3:54 PM | |
Joined: 10/20/2009 Last visit: 4/3/2017 Posts: 215 Rating:
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HI Grim, |
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Regards, |
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| 5/26/2014 8:05 AM | |
Joined: 6/5/2009 Last visit: 3/26/2025 Posts: 153 Rating:
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Hello H-H and R-J, Thankyou for the reply. It was very good to know. Yes, I agree with HH when we need to use PN port on the CPU for MODBUS TCP communication and also we need to use the MODBUS PN Redundancy software for communication. As for the communication between the 2 CPU's if there is some sample program to demonstrate how it could be done without loss of communication when one of the two CPU's in the H system fails, it would be good to have it posted here. I would also want to find out how to perform the PROFIBUS communication between the 2 CPU's. Are we supposed to use the PROFIBUS FMS connection and use the necessary blocks. If its available with you kindly have it posted here. It'll be useful for me. As for the attachment, I posted one in PDF. Hope its clearer than the prevous one. Kindly give your best opinion. Best Regards, Grim Reaper
AttachmentSystem_Config_Edited.pdf (260 Downloads) |
| 5/26/2014 11:44 PM | |
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Joined: 7/2/2008 Last visit: 3/19/2025 Posts: 928 Rating:
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HelloGrim Reaper,
Forget about FMS (It's almost dead now). Unfortunately, you don't have a chance in Profibus with the IM151-8. The CPU can't be a DP slave andconsequently can't be connected to a Y-Link. Now your network is more clear to me. I just have a concern on the ring in RIO Panel 2 (container 2). I don't think you can make a double ring this way (i.e. to make a ring with a signle switch). What I can find in theconfiguration examplesis only star and line topology for a single switch. Best regards, H-H
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| 5/27/2014 12:53 PM | |
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Joined: 6/5/2009 Last visit: 3/26/2025 Posts: 153 Rating:
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Hello H-H,
Forget about FMS (It's almost dead now). Unfortunately, you don't have a chance in Profibus with the IM151-8. The CPU can't be a DP slave andconsequently can't be connected to a Y-Link. Now your network is more clear to me. I just have a concern on the ring in RIO Panel 2 (container 2). I don't think you can make a double ring this way (i.e. to make a ring with a signle switch). What I can find in theconfiguration examplesis only star and line topology for a single switch. Best regards, H-H 1. Looking at the picture again, you can see that the IM 151-8 CPU is connected to the remote S7-300 panel using an external PROFIBUS module. Am not yet sure of the part number, but will find out. So is there any change of thought after viewing this for PROFIBUS communication with the S7-300 CPU? Please advise. 2. Is there the possibility of using a one ethernet switch to create the ring network within the second panel and bring it as a ring with the main system using another ethernet switch. What am talking about would look like the attachment. Please let me know what could be done here. Best Regards, Grim Reaper |
| 5/29/2014 12:51 AM | |
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Joined: 7/2/2008 Last visit: 3/19/2025 Posts: 928 Rating:
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HelloGrim Reaper, The Profibus configuration seems OK. The part number of the DP master is in your PDF (6ES7138-4HA00-0AB0)and is correct. For how to make the configuration please check thislink. You can do the same steps for the DP master of the IM151-8.
I'm not the MRP expert but I here's what I can say, 1- I just want to clarify what I've said before. What I wanted to say is that a single switch can't be part of 2 rings at the same time. That's why I said the RIO2 ring seems to be not correct. 2- I tried your last configuration in Profinet IO topology editor in SIMATIC Manager (You should use it to test your network) and it was compiled without errors (I mean a separate switch to make a separate ring in RIO panel 2) but you still have a single point of failure which is one of the two switches. Maybe it will be better if you use something like what I've attached. 3- There are switches that can be part of ring and there are switches that can't be part of rings. Please, checkWhich Industrial Ethernet switches can be operated as redundancy managers and which as standby managers in a ring? Now your drawing says that devices tagged SW are siemens unmannaged switched (i.e. X100 series) which you can't use them in a ring according to the above link. So, maybe you need to update your switch selection. Best regards, H-H
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