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Host Engineering Forum > General Category > ECOMs and ECOM100s > Modbus RTU over Ethernet
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Author Topic: Modbus RTU over Ethernet  (Read 1063 times)
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« on: March 02, 2009, 01:49:50 pm »
I have a controller that uses modbus RTU over ethernet.  From what I have read this is different from modbus TCP/IP.  Does anyone know of a way to communicate to this over ethernet?
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MikeS
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« Reply #1 on: March 02, 2009, 03:13:39 pm »
are you intending to use one of our ecom100's as a modbus client to this controller?

if so, can i assume it has an ethernet port (which would connect to the LAN) and a serial port to which you'd multi-drop the modbus rtu devices?
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« Reply #2 on: March 02, 2009, 03:57:09 pm »
Yes I am planning on it.  The controller has an ethernet port that does modbus rtu over ethernet.  I know you have ecoms that can do modbus TCP I/P but these are two different things.  I am wondering how I would accomplish this.
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