3/6/2020 5:56 AM | |
Joined: 1/18/2019 Last visit: 5/17/2024 Posts: 4 Rating: (1) |
MLFB of CP 343-1 -- 6GK7 343-1EX30-0XE0 VER : 3.0 MLFB OF CPU 315-2PN/DP -- 6ES7 315-2EH14-0AB0 VER : 3.1 |
3/18/2020 2:40 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2685) |
Hello AB3; To add to Duris_I's post, here is the link to the specialized Modbus TCP blocks for the S7-300 CPUs and CP 343-1: How do you establish a Modbus/TCP communication from a SIMATIC S7-300/S7-400 and where can you find further information? https://support.industry.siemens.com/cs/ww/en/view/22660304 There have been inconclusive attempts to use standard TCP communication blocks (AGSend/AGRcv, for example) to connect to a Modbus TCP server, the results have not proven useful. At the end of the link, you will find demo versions of the blocks that you can download, install and test. They are fully functional, but without the correct license they will light up the diagnostic LEDs of the CPU (clients do not like to see that in their plants...). Try them, you will be able to evaluate them. As Duris_i pointed out, to the left of this page, in the navigation bar, you will find a Simatic Modbus TCP conference where you will find threads from the forum users discussing these blocks. This has proven very useful. Hope this helps, Daniel Chartier |
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