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Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/24/2017 11:36 AM

Looking for a 16 position switch that has a 4 bit output

so 4 output lines that would feed a plc to tell the plc which position has been selected.

Anyone ever seen anything like this?

Thanks

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#1

Re: Anyone ever seen a 16 position rotary switch with 4 bit binary output?

03/24/2017 11:52 AM

Have you looked here?

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#2

Re: Anyone ever seen a 16 position rotary switch with 4 bit binary output?

03/24/2017 11:55 AM

NVE has something else you might like as well: angle of rotation chip having a sine and a cosine output, uses giant magnetoresistive effect (good signal mV/Vcc), and allows for precise quadrature to less than 1 degree.

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#3

Re: Anyone ever seen a 16 position rotary switch with 4 bit binary output?

03/24/2017 12:01 PM

Thanks guys

I need like a big industrial rotary switch that has 16 detents with a 4 bit binary output

for like a cabinet mount

If you think of anything let me know.

Ive found lots of little stuff but nothing like industrial related.

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#4

Re: Anyone Ever Seen a 16-Position Rotary Switch with 4-Bit Binary Output?

03/24/2017 1:01 PM
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#5
In reply to #4

Re: Anyone Ever Seen a 16-Position Rotary Switch with 4-Bit Binary Output?

03/24/2017 1:08 PM

Wow!

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#6
In reply to #4

Re: Anyone Ever Seen a 16-Position Rotary Switch with 4-Bit Binary Output?

03/24/2017 1:10 PM

ha! nice

how about something like 40 - 80 mm or so that could be mounted to a control cabinet face

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#8
In reply to #6

Re: Anyone Ever Seen a 16-Position Rotary Switch with 4-Bit Binary Output?

03/24/2017 1:27 PM

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#13
In reply to #4

Re: Anyone Ever Seen a 16-Position Rotary Switch with 4-Bit Binary Output?

03/24/2017 11:22 PM

She's not big.

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#7

Re: Anyone Ever Seen a 16-Position Rotary Switch with 4-Bit Binary Output?

03/24/2017 1:23 PM

Yes.

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#9

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/24/2017 2:57 PM

LMGTFY: 16 position rotary BCD coded output switch

About 121,000 results (0.72 seconds)

Well, that didn't take long. Filter the results for "large". You have to at least try...

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#10

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/24/2017 4:27 PM

This still might be a little small, but here!

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#11

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/24/2017 5:59 PM

Yes, all you have to do is look.

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#12

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/24/2017 6:48 PM

Thumbwheels are made in all codes. BCD switches

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#14

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/25/2017 6:35 AM

Google "4 bit 16 position rotary switch" for hundreds of answers. However you can do it with a single analogue input. Take a sixteen position switch with a single N/O pole at each position. Wire a precision resistor between poles 1 & 2, a precision resistor between poles 2 & 3 and so on until you have shorted each pair in turn with a resistor. Now wire the other side of all the poles in parallel and to the input of the PLC. Connect one end of your line of series resistors to 0volts and the other end to the live volts. You now have a 16position voltage divider. Read the voltage at the input and convert to a switch position using the PLC software. If you put a further series resistor in series just before the input you make the circuit fail safe by running a check to see if the voltage falls outside that delivered between one and sixteen resistors.

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#18
In reply to #14

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/27/2017 1:27 PM

Very cool idea!

I like it!

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#24
In reply to #18

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/28/2017 4:49 AM

You like that, how about this. Same switch 16x single pole plus 32 diodes.

Pole 0 not wired

Pole 1 to bit 1 via diode

Pole 2 to bit 2 via diode

Pole 3 to bits 1 & 2 via diodes

Pole 4 to bit 3 via diode

Pole 5 to bits 3 & 1 via diodes

Etc up to Pole 15 to bits 1,2,3 & 4 via diodes

Use "Electro Switch 28310A, rotary 16 position switch, 120-600VAC, 2-5amp rating" on E-Bay from ds_machine $95 +p&p First one I found, no recommendation implied

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#25
In reply to #24

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/28/2017 10:47 AM

only problem with this is that analog cards are spendy $$$$

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#27
In reply to #25

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/28/2017 2:06 PM

No analogue card required. In this version read digital input 1 for bit 1, digital input 2 for bit 2 etc. All I am suggesting is that if you cannot find the exact switch you require then recreate it using single poles on the switch and 32 diodes soldered to a piece of Veroboard to make the single poles look like a 4 bit output. I have included a sketch of the Veroboard. Connect switch outputs 0 to 15 each to a vertical track (column) on the board. Connect the PLC inputs to their tracks. Connect diodes for each row where dots are indicated on the tracks. Where a pole has 2 or 3 diodes connected to it you are using the diodes to create a binary number. That is why the poles are marked 0-15 not 1-16

S0S1S2S3S4S5S6S7S8S9S10S11S12S13S14S15I1I2I3I4
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#15

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/26/2017 5:58 PM

They were readily available 30 years ago, I have not looked recently.....

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#16

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/27/2017 9:10 AM

If the operator has to make one of 16 possible selections we would instead use a small touchscreen that will communicate directly with the PLC. Is more user friendly, can provide message feedback and is future expandable. What if you have to add a 17th position?

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#19
In reply to #16

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/27/2017 1:31 PM

I agree with you however sometimes we are stuck with what the customer requests and what the sales people can sell...

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#21
In reply to #19

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/27/2017 2:01 PM

A professional sales engineer will collaborate with the customer and assist them to make the best decisions. If your company does not currently offer the required product, partner with an outside controls integrator to develop the solution. At this point you could mockup a demo screen in Photoshop or even Excel to collaborate with the customer.

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#17

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/27/2017 1:25 PM

Why do people insist on assuming i did not even google the thing?

Do you really think i got through 5 years of enginnering school being that stupid?

All the google results refer to someting having one of two problems

They either output in Hex or they are small PCB mounted types.

If you read my post i specifically was looking for a large cabinet mounted device. something in the neighborhood of 60mm large

But its ok, please go on bashing me and making assumptions. We all know how well me defending myself goes (despite people not reading the actual post) so please bash away!

All those "hundreds" of results you smart asses want to throw in my face are NOT the answer. If they were, i would not of made the post. Pretty Simple

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#22
In reply to #17

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/27/2017 4:07 PM

The way you phrased the question, reminded me of "Hey Wally, did you see my pipe wrench lying around somewhere?" Now substitute my name, and substitute 16-position BCD switch (encoder). No, I have not seen your F***ing switch!

Grow a sense of humor, you will live longer.

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#20

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/27/2017 1:46 PM

Could you give an approximate size? Big, medium, or small?

There are some for which the contacts will never wear out, by the way.

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#23
In reply to #20

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/27/2017 5:10 PM

Pretty sure i did above

40-60mm

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#26
In reply to #23

Re: Anyone Ever Seen a 16-position Rotary Switch with 4-bit Binary Output?

03/28/2017 12:28 PM

Did you use the link in post #10? I think that would fit your specs.

Here is the document that shows its dimensions and installation instructions:

http://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Specification+Or+Standard%7F408-7936%7FO%7Fpdf%7FEnglish%7FENG_SS_408-7936_O.pdf%7F435986-1

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