10/19/2019 9:57 AM | |
Joined: 12/18/2014 Last visit: 9/25/2024 Posts: 33835 Rating: (4205) |
Import of a technical question via PM from the User Siemens_Fan I am using TIA Portal V14 and establishing connection between S7-1200(CPU-1214C-DC/DC/RLY) PLC and Tesys LTMR27EFM device using Modbus TCP via modbus client DB. Problem: The Modbus Client DB always return a Status of 8381(Function Code nor Supported). I have tried multiple possibilities to resolve this error but i can't. but when i try with modbus simulator, i can receive data from tesys to simulator. Here i have attached my configuration picture for your reference. Appreciate and look forward to see a reply. Thanks in advance. Senthilkumar |
10/19/2019 3:00 PM | |
Joined: 9/16/2013 Last visit: 1/5/2024 Posts: 511 Rating: (106) |
Take a look here. Looks like address was not specified as it shouldbe. https://support.industry.siemens.com/tf/ww/en/posts/mb-client-version-3-1-block-to-read-address-but-getting-error-code-8381/195044/?page=0&pageSize=10 |
Last edited by: SOble at: 10/19/2019 15:00:46Website: |
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This contribution was helpful to1 thankful Users |
10/21/2019 8:39 AM | |
Joined: 6/13/2016 Last visit: 6/28/2024 Posts: 2 Rating: (0) |
Hi, We were able to get the modbus data from other devices on holding registers into the S7-1200 using modbus TCP connection. Using the Mb_Client block to get data from the field (slave) devices. we set the MB_mode as "0" and Data Address as "40xxx". Successfully able to get data from multiple devices But unable to get the data from the Tesys (Schneider Device). Thus to test the Tesys device, we used the Modbus simulator master (Modbus Poll) in the PC and able to receive data from the device into the PC. "Attached screenshot confirming the Tesys working well with Modbus poll simulator". Above confirms that the Tesys works fine. Also S7-1200 MB_Client configuration works fine with other devices. Since both looks to be ok unable to figure out why S7-1200 mb_client block gives 8381 error when it tries to communicate to Tesys device.
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10/23/2019 7:38 AM | |
Posts: 1283 Rating: (105) |
Did you check your address with '400452' and change the length to 1 and see at first , it can read one single register without issues. |
7/28/2020 1:10 PM | |
Posts: 1 Rating: (0) |
I have same issue face. Your problem solved.so please guide me. |
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