http://itknowledgeexchange.techtarget.com/itanswers Tue, 21 May 2013 16:56:46 +0000 en-US hourly 1 http://itknowledgeexchange.techtarget.com/itanswers/rs-232-port-buffer-hardware-protection/ http://itknowledgeexchange.techtarget.com/itanswers/rs-232-port-buffer-hardware-protection/#comments Wed, 11 Mar 2009 13:35:29 +0000 Flame I am looking for a device that attaches between the RS-232 port on a computer (in this case a laptop) and a Serial device (in this case an old programmable logic controller) that acts as a signal buffer. I’m NOT looking for something that stores data, rather I’m looking for a device that will protect the port on the laptop from spikes as well as improperly wired or damaged ports on the PLC machines. I’m looking at making my own, with a ZIF socket so that a damaged buffer chip (probably a MAX232) can be swapped out quickly, but I don’t want to re invent the wheel is a similar device exists.
Thanks!

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