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Host Engineering Forum > General Category > ECOMs and ECOM100s > Modbus RTU via H2-ECOM
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Author Topic: Modbus RTU via H2-ECOM  (Read 1143 times)
Elecnut33
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Posts: 8
« on: May 13, 2009, 02:19:13 pm »
I have a DL260 processor and I am trying to communicate (H2-ECOM-100) with an Altivar 31 via modbus(RTU) RS485. I have a Connexium TSXETG100 ethernet gateway that I am using to convert the ethernet comms to the RS485 modbus. I cannot seem to get the commands through to the inverter.

Can anyone offer any advice or sample programs that might explain how to do this?

Thanks.
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Greg
HOS†ech
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Hmmm...


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« Reply #1 on: May 15, 2009, 04:17:54 pm »
The H2-ECOM100 has to be configured using NetEdit (free software). The H2-ECOM100 has to have a Peer-to-peer table in it that points to the Connexium TSXETG100 ethernet gateway's IP address. Then you use the RX/WX (or IBox ECRX/ECWX) instructions in the DL260 to read and write.

Also, the H2-ECOM100 does true Modbus TCP, not Modbus RTU on TCP.
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