The disadvantage is that you might really mess up a couple thousand dollars worth of pool automation equipment. The biggest advantage to sticking with the rs485 protocol is access to the data generated by the intelliflow pump. Now with that said, I managed to pick up the ilink device on ebay for about the cost of the hardware. Doing it yourself will probably take about 20 hours plus $50 in hardware (rs485 to rs232 or IP). Aside from doing it yourself, you dont really have much of a choice. Is the pentair device worth it? I guess that depends on how badly you want the functionality it exposes. It was a bit of a pain and certainly took more than $500 of my time to get the job done. I went to the trouble of analyzing the rs485 protocol and managed to duplicate all of the functionality exposed via the rs232 device. I am a software professional with a background in electronics and a serious home automation hobby. I’m thinking of eliminating the Pentair controller all together. Did anyone manage to hack it and willing to share. It contains a small micro controller that handles the protocol conversion from a simple ascii text based protocol to the rs485 protocol used by the intelltouch system. Pentair utilizes RS485 protocol to control their intelligent pumps, chlorinators, valves etc. The device is much more than an rs-232 to rs-485 converter. It looks like I am a couple of months late on this question but.
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