9/20/2017 2:06 PM | |
Posts: 47 Rating: (3) |
I have CPU S7-1214 and tcp-server moxa nport 5150 and I need modbus rtu master connection. Does the library for with target or I must write it myself? |
9/20/2017 9:47 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2684) |
Hello Alex; The Moxa Nport 5150 is a serial communication device that supports Modbus RTU. Why do you mention TCP-server? Do you want tosetup Modbus RTU connections between the s7-1200 (master) to the Moxa (slave)? The following document shows which modules you need to add to the S7-1200 for different serial connections, and presents the required code, along with a sample program. How do you establish a MODBUS-RTU communication with STEP 7 (TIA Portal) for the SIMATIC S7-1200? Hope this helps, Daniel Chartier |
9/21/2017 9:31 AM | |
Posts: 47 Rating: (3) |
My connection scheme CPU1214 -> N5150_Ethernet -> N5150_RS485 -> device with Modbus RTU. I have TCP connection to N5150 only.
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9/21/2017 2:44 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2684) |
Hello Alex; Asking the right question with all project details generally provides better answers. Here are some of the posts you can locate on the forum (using the search box at the top right of this page) on the subject of programming a S7-1200 Profinet integrated port to a Modbus TCP to RTU gateway: Accessing MODBUS RTU device through gateway from MODBUS TCP in S7-1200 S7-1200 Problems trying to communicate with modbus RTU device trough gateway. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 9/21/2017 2:45:31 PM |
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9/21/2017 2:59 PM | |
Posts: 47 Rating: (3) |
Thanks for your reply. But moxa NPort5150 isn't
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Last edited by: Jen_Moderator at: 9/21/2017 3:31:03 PMEdited text for better reading. |
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