We want to collect data (raw material lot codes) and input them into a PC for a match / no match analysis. We will use a cordless bar code scanner to scan bar coded lot numbers into a PC app for verification.
If the wrong lot number is scanned, (no match condition) we want to turn on a red indicator light and have it emit a loud audible tone. If the scanned number matches the number in the database, then we’ll turn on a green light and won’t emit a tone.
The bar code stuff is easy since it’s what I do. The light is not a problem, I found a two color LED “tower” type that supports either 18 to 30V DC or 21 to 27VAC power.
My questions is this: Since we’ll be using a PC app to control the lights, we’d like to send a string or characters (RS232) to the hardware that will be controlling power to the lights. One string will make the red light come on for x amount of time and another will make the green the light come on.
If any of you have any ideas on what we’ll need to do this, I’d greatly appreciate it.