[Shop-talk] Web based PLC
Wayne
wmc_st at xxiii.com
Sun Jan 3 07:59:21 MST 2010
eric at megageek.com wrote:
> I don't want to have a 220v line run from the pump, up the 5 stories to
> the roof of the building. So I was thinking that I could put a network
> PLC device up near the tank and another one near the pump. I could log
> into the device via a web interface and program it to turn the pump on and
> off based on the position of the contacts in the float switch.
Sounds like an awfully complex solution. Is the network stuff already
in place? I could see doing it in a factory where the network is a
given and you have a bunch of other ones to manage.
But couldn't you use some simple low voltage signaling to a plain old
relay at the pump?
> one to turn on and off the pump." You have to love countries where labor
> is cheap.
Yeah, right up to the point where they become a "problem" and/or reason
to wage war. Oh well, it's cold here. Off to walmart for a new afghan.
-Wayne
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