adccommunitymod (AutomationDirect) asked a question.

Edited September 16, 2020 at 10:42 PM
Click Ethernet Watchdog.

Created Date: July 21,2016

Created By: kcress

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Hi, I have an Ethernet CLICK behind a cellular router (Red Lion) and it's become apparent that the router occasionally crashes, due probably to a power fluctuation. The CLICK never crashes. I'd like to set up a scheme where a web located sever polls for some data from the CLICK periodically. When the CLICK gets the query it resets a watchdog counter. If the WD times out the CLICK will power-cycle the router getting us back online. I believe this would mean the CLICK (non originator) would be in slave mode. I'm guessing I'd need to have some sort of Modbus Master running on the web server to pull this off. Has anyone got any suggestions for this Master? Are there any off-the-shelf simple Modbus masters that can do this? Does someone have a better way to skin this cat? Thanks.

  • 4 answers
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  • adccommunitymod (AutomationDirect)

    Created Date: July 21,2016

    Created by: kcress

    Hi,

    I have an Ethernet CLICK behind a cellular router (Red Lion) and it's become apparent that the router occasionally crashes, due probably to a power fluctuation. The CLICK never crashes. I'd like to set up a scheme where a web located sever polls for some data from the CLICK periodically. When the CLICK gets the query it resets a watchdog counter. If the WD times out the CLICK will power-cycle the router getting us back online.

    I believe this would mean the CLICK (non originator) would be in slave mode. I'm guessing I'd need to have some sort of Modbus Master running on the web server to pull this off.

    Has anyone got any suggestions for this Master? Are there any off-the-shelf simple Modbus masters that can do this? Does someone have a better way to skin this cat?

    Thanks.

    Expand Post

  • adccommunitymod (AutomationDirect)

    Created Date: July 21,2016

    Created by: kewakl

    Can whatever device (on the other side of the router from the click) do the query?

  • adccommunitymod (AutomationDirect)

    Created Date: July 21,2016

    Created by: kcress

    Hi kewakl; Yes that's the preferred plan. I have nothing yet. It would be useful to actually retrieve info the CLICK has so it seems logical to ask for it in the process of testing the CLICK's accessibility. I'm hoping someone knows of a Modbus app that allows periodic repetitive pollings of slaves and can run on a windoz or linux box.

 

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