adccommunitymod (AutomationDirect) asked a question.
Ethernet to Modbus (and remote I/O)
Created Date: June 08,2006
Created By: barrymueller
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I have 20 VFD's (GS3) to control, and only need to send a start/stop and speed command, so I don't want to spend the money for an ethernet card for each. I also have some discreet I/O to pick up. I'm going to use the Ethernet remote I/O modules, and wonder if the serial port in front can be used instead of purchasing a seperate ethernet/modbus converter. Also, why are the industrial ethernet switches so much?? (compared to an off the shelf switch)
Created Date: June 08,2006
Created by: bcarlton
The GS3 manual shows the RS-485 pinout of the connector as well as detailed use with an AD CPU. They also show the RS232 to RS-485 convertor.
Created Date: June 08,2006
Created by: Tech Guy
Unless you will be using Think and Do or writing your own control software for the EBC modules, the com port is not accessable.
The Industrial switches have broadcast storm protection as well as being much more tolerant to noise than an off the shelf switch.
Created Date: June 08,2006
Created by: barrymueller
The drives talk in Modbus, I have the serial comms wiring ok, but is it possible to send info via Ethernet to a T1H-EBC100 module, then out the serial port in the front of the module to the serial port (modbus) of the GS3 drive?
Created Date: June 08,2006
Created by: barrymueller
I have 20 VFD's (GS3) to control, and only need to send a start/stop and speed command, so I don't want to spend the money for an ethernet card for each. I also have some discreet I/O to pick up. I'm going to use the Ethernet remote I/O modules, and wonder if the serial port in front can be used instead of purchasing a seperate ethernet/modbus converter.
Also, why are the industrial ethernet switches so much?? (compared to an off the shelf switch)