Trouble connecting to a CompactLogix PLC
The eWON is online. It's IP address is 192.168.1.20. The PLC's IP address is 192.168.1.10. How do I configure RSLinx to connect to the PLC? Which driver should I use - Ethernet devices or Ethernet IP? Which IP address should I use for the driver config - the eWON's or the PLC's? Step by step directions for making this connection would be great. I've not found anything covering this setup anywhere. Thanks.
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Hi Jiott,
You need to use the PLC's IP address and configure "ethernet devices' driver (AB-ETH1). There are step-by-step directions for common PLCs in the PLC area on ewon.biz:
https://websupport.ewon.biz/support/product/controllogix-family/controllogix-familySee this doc pages 7-9 specifically:
aug-0035-00-en-configure-remote-access-for-allen-bradley-plc.pdf
Kyle
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Kyle,
Just wanted to clarify:we have a four port eWON connected to an Ethernet switch. Is that acceptable?
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Kyle,
One more piece of information. RSWho shows the PLC as an unrecognized device (below).
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Kyle,
I followed the guide you suggested including the troubleshooting tips and I'm still not able to access the PLC. The PLC IP address is 192.168.1.10. The eWON's IP address is 192.168.1.20. Using a CMD prompt I can successfully ping the eWON but not the PLC. The architecture we have is similar to the one in the guide (below) which includes an Ethernet switch. It seems I can communicate from my remote laptop up to the eWON but not to the PLC. Any suggestions?
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What model is the CompactLogix?
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And what version is the eWon?
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1769-L27ERM-QBFC1B
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Here's the summary page and an architecture drawing of our system.
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OK thank you, that is helpful. Now, are you trying to connect with your PC through the VPN, the WAN, or the LAN?
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VPN
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Hey Kyle,
I just wanted to follow up with you on that eWON we installed in NJ. Today I worked with personnel out there and it came down to resetting a latched bit in the PLC. The machine is back up and running and I didn't lose 2 days and $1000s of dollars travelling out there to do something that took minutes to do remotely. Thanks again for making it possible!
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That's great - I'm glad I could help!
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Hi Kyle,
I found this article after searching something similar to my situation. I have the same issue, only I don't have a "latched bit in the PLC" to reset in the PLC. I am not exactly sure how that's relevant to the issue.
Your last question was "OK thank you, that is helpful. Now, are you trying to connect with your PC through the VPN, the WAN, or the LAN?"
Mine is connected to the LAN. I can ping other devices on the network (network 3) but not my 5069-L306ER PLC. I am not sure why?
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