Turn on Beacon Light on Machine

Smrtman5 · May 1, 2012

I feel like ive seen this question before, but i couldnt find the answer....so

Is there a way to manually control the beacon light on the top of a cnc? Perhaps getting it to illuminate or flash red?

The only thing i can think of right now is having an M code relay turn on or off a separate light....but thats a pricey lightswitch....

Specific machine is a Doosan HP4000 31i, but id be interested to know if this is possible on any other machines too.

any thoughts?

Stuart Caruk · May 1, 2012

Most of the time the ladder logic of the PLC is used to trigger the output that controls the light. It sees a specific input and effects the appropriatte output. If you have access to the ladder, it's simple. If you have access to the output you can map it from an M code if you wish.

Not particularilly simple, but quite possible. I've done it on several machines.

Smrtman5 · May 2, 2012

Im not too familiar with the electrical side of the inner workings of these machines, can you explain a bit more please?

PMT · May 2, 2012

Toggle switch would be the easiest way.

Mike_ · May 2, 2012

PMT said:
Toggle switch would be the easiest way.

I don't think he wants to turn it on by hand

Does the light come on when there is an alarm? You might run the machine over to a soft stop as part of the program. This works on a waterjet I've seen in the past.

Captdave · May 2, 2012

If all your trying to do is get a signal to let you know the machine has shut off, what about something as simple as a small buzzer wired into the end of cycle light?

Smrtman5 · May 2, 2012

I want to use the probe data to control an if statement, such as IF[#143 GT .001] THEN #3006=1 (Out of tolerance). The #3006 replicates an M01 but doesnt flash the red light. I dont want to alarm out, bc then the operator has to reset and cant run through the rest of the probe inspection cycle, but i do want the operator to be aware of the issue, hence turning on the light, so he sees it.

sinha · May 3, 2012

There is no simple way unless you have a spare M-code.
One can write an output interface variable and modify the ladder to have an output signal which can be used to drive a relay. The relay PCB may have extra relays.

chucker · May 3, 2012

Can you just replace the #3006=1 (Out of tolerance) with M0 (Out of tolerance)

Smrtman5 · May 3, 2012

Hmm...does the light flash at M0? I think it does, right?

chucker · May 3, 2012

I just checked our DMV 400 and it will flash with M0

Smrtman5 · May 3, 2012

Cool. Thanks for the tip.

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