4/21/2023 3:46 PM | |
Joined: 7/19/2022 Last visit: 9/27/2024 Posts: 384 Rating: (62) |
Hello ARod741, I am not sure but I think that for Modbus communication with a S7-1500R/H you must use the redundant Modbus/TCP instructions (MB_RED_CLIENT and MB_RED_SERVER). Here you can find two FAQs where they talk about them and give an example of application: You can also find information in the TIA Portal manual: Redundant MODBUS (TCP) communication for library versions V5.0 or higher |
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4/21/2023 7:07 PM | |
Joined: 7/19/2022 Last visit: 9/27/2024 Posts: 384 Rating: (62) |
Hello again, If you want to use MB_CLIENT instead of MB_RED_CLIENT you must use as HW ID the system IP as you can see in the attached image taken from the S7-1500 R/H manual where you can see that the devices point to that IP to communicate. I don't have an example with S7-1500R/H as a modbus client, but I do have the attached example from TIA Portal V16 with an S7-1500H as a modbus server that you can use to better understand the system IP usage. In this example, the HW ID is 257. AttachmentAttachments.zip (657 Downloads) |
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4/24/2023 8:27 AM | |
Joined: 3/8/2016 Last visit: 1/22/2024 Posts: 37 Rating: (0) |
Hello again. I didn't get your replay. After switchover the HW value change or remain the same? Regards, AR |
7/10/2024 8:57 PM | |
Joined: 2/29/2016 Last visit: 7/20/2024 Posts: 19 Rating: (0) |
I'm Facing same your problem how could you solve it? |
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