Thanks to io_guy adding support for GenMon in nodelink I was able to add my Generac 11kw standby into ISY as a node. Also, thanks to the developer of GenMon jgates. You do need to have some experience using a Raspberry PI but other than that it’s as simple as following the guides of the two pieces of software as the both are documented very well, but I will lay out the basics and some things I did different.
Genmon runs on Raspberry PI and uses a serial board and cable into the Generac controller to interface the generator. It's the same port used for the Generac cellular monitoring solution.
I am running genmon and nodelink on different PIs because the GenMon PI needs to be located in the generac cabinet and I use nodelink for multiple devices.
The first thing you need to do is get all your hardware together.
The github page has a good list of the hardware needed https://github.com/jgyates/genmon/wiki/Hardware , I made a couple changes to this list.
The enclosure he lists is a little large for the space available in the 11kw enclosure so I ordered this one instead https://www.amazon.com/gp/product/B005T9HMQW/ref=oh_aui_detailpage_o09_s02?ie=UTF8&psc=1 everything does fit in this. I used 3M mounting tape to mount the PI and the serial board. In order for everything to fit I had to mount the serial board to the inside of the door with the ribbon cable on the hinge side.
I also ended up using this serial board, https://www.amazon.com/gp/product/B01JYNHNW6/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1 and this breakout board, https://www.amazon.com/gp/product/B07437GS66/ref=oh_aui_detailpage_o09_s03?ie=UTF8&psc=1. The serial port he lists in his hardware list never worked right for me and the chip got hot, the one I linked worked perfect for me.
The connectors he lists on the hardware page worked perfect for the evolution controller. You will need a Molex crimp tool for the connectors, https://www.amazon.com/s/ref=nb_sb_ss_c_1_10?url=search-alias%3Daps&field-keywords=molex+crimping+tool&sprefix=molex+crim%2Caps%2C141&crid=G0JOXESNUV36 . Also he lists a few different cable types for the serial cable, I ended up using two conductor shielded alarm wire.
Use his recommendation and power the pi off the generators battery using the usb cord he lists.
Now the hardware is in order you need to setup your pi and load mono, plenty of guides on this and you can use io_guy's guide for nodelink PI setup if you need to. Pages 1 and 2 of this doc http://automationshack.com/Files/Raspbian_Setup_V5.pdf
Then follow the guide on git for setting up genmon software, https://github.com/jgyates/genmon/wiki/Setting-up-your-Pi-and-genmon .
If you want to run the serial test he lists on this page make sure you stop genmon "sudo /home/pi/genmon/startgenmon.sh stop" before running the test or the test will fail because the application locks the serial port.
I had WiFi connectivity issues with the PI until I did the following. Run "sudo rpi-update" , edit the script.sh file "sudo nano script.sh" and add "iwconfig wlan power off" the file, save it and reboot.
Once you are able to connect the the GenMon web interface and everything looks good you can add the GenMon device in Nodelink and use Nodelink to install the node to the ISY. If you don't have nodelink setup yet use io_guy's guide for this. http://automationshack.com/wp/nodelink/
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