This is just to augment what has already been said. I successfully setup an eWon Flexy with a Mitsubishi FX3U through ENET and I wanted to let everyone know how we did it, through a little trial and error. We are still in development and testing phase, but were able to get it to read data consistently. Few things to note:
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we used the ENET card and not serial coms
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we found issues with X & Y & some others not consistently giving the data across and we just ended up bypassing this issue as we were in a hurry. the bypass was to just copy that tag data to D registers. The eWon read those like a champ and had no issue. (issue was that the lowest X or Y would read X0 or Y0, but any above that, it wouldn’t read changes in those…it would make connection but not read changes)
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We tested both with a switch in-between AND a crossover cable and both worked. I know it should have worked, but sometimes this stuff just doesn’t; however this did work with a crossover cable.
How we programmed eWon:.
to make it simple, we left the eWon on 10.0.0.53 in our scenario. We are an OEM skid builder and didn’t have a set IP scheme before, so we stuck with this for simplicity.
IO Server Config: MELSEC - (FX3UCPU,TCP,10.0.0.1,5001) ip of our plc is 10.0.0.1. That was set in Topic A with enable checked and a poll rate of 1000ms which was fast enough for us. (NOTE: this 1000 ms doesn’t catch momentary switches like a start, so you have to program in a latch 2 second bit or something in your plc to catch momentary switch presses)
Tag Setup: I/O Server, MELSEC, Topic A, address (we used all D’s as they read better)
PLC Setup:
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I’m an AB programmer, so I was with someone else doing the Mitsubishi, but we added the card and under the FX Parameter, tab PLC SYSTEM (2) we had to change “CH1” to unchecked on the box labeled “Operate Communication String”
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Under same window, Right hand tab “ETHERNET” we selected Channel: CH1 and put in the IP of 10.0.0.1 / 255.255.255.0 / Gateway: 10.0.0.53. Use eWon IP address as the gateway address here.
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after that is saved, click “Open Settings” On number 1 chose: TCP / MC Protocol & 5001 as Host Station Port Number.
once that was set, all comms came up and we were in business. I’ll update this post again once I have the communication to the PLC via WAN for programming purposes, not just reading. Hope you guys have to spend less time now than I did working on this!!