Barcode scanner + Click PLC

I'm working on a school project and want to use a barcode scanner with my Click PLC. I've been researching, but the more I do, the more I get stumped. I have no issues with programming, just the hardware at this point.

A barcode scanner or any other peripherals are able to connect to the PLC through a COM port (RJ12) on the PLC. When I'm looking around, I only see barcode scanners (in my budget) that connect using USB. So how do I go about connecting a barcode scanner to my PLC? I've searched for adapters from USB to RJ12 but those don't seem to exist. Has anyone done this before and can shed some light?

I appreciate any guidance you can provide me. Thank you!

rj12 is just the port type (like a telephone port) but what is the ports comm type? rs 232, rs485 etc? i think we need more information like for example exact model of Click plc. before we can help you more

Sorry, it's RS232. I guess I've been confusing myself with this. When I search for RS232, I always see the 9-pin connector.

Here's the one I have: http://www.automationdirect.com/adc/Shopping/Catalog/Programmable_Controllers/CLICK_Series_PLCs_%28Stackable_Micro_Brick%29/PLC_Units/C0-00DD1-D

I think you're going to need a serial barcode scanner. There is an example program to interface the Click with a barcode scanner here:

http://support.automationdirect.com/examples.html#com

Download EP-COM-008 for the Click.



-Eric

^ Thanks, that's actually where I got the motivation to try this from.

I'm still unsure what I'm looking for though. When I search for serial barcode scanners, I get ones with the 9-pin RS232 connectors.

Suppose I were to get something like this: http://www.ebay.ca/itm/Datalogic-Gr...223?pt=LH_DefaultDomain_0&hash=item337f374ef7

Would I then need to get this (are there ones preassembled?): http://www.ebay.com/itm/DB9-9-Pin-M...inout-Modular-Adapter-Connector-/190723572955, and then use an RJ12 to RJ12 cable to connect to the COM port? Will that work?

Thanks for the help!

That DB9M to RJ11 will work. I highly doubt you will find one pre-assembled, especially with the correct wiring.

Once you know the pin out of the scanner (TX, RX, etc.) it should be pretty easy to figure out 'what hole to stick what wire in'.

You will also want to get one of these for when you realize you need to swap wires around...

http://www.l-com.com/item.aspx?id=3130



-Eric

asimowalk said:

^ Thanks, that's actually where I got the motivation to try this from.

I'm still unsure what I'm looking for though. When I search for serial barcode scanners, I get ones with the 9-pin RS232 connectors.

Suppose I were to get something like this: http://www.ebay.ca/itm/Datalogic-Gr...223?pt=LH_DefaultDomain_0&hash=item337f374ef7

Would I then need to get this (are there ones preassembled?): http://www.ebay.com/itm/DB9-9-Pin-M...inout-Modular-Adapter-Connector-/190723572955, and then use an RJ12 to RJ12 cable to connect to the COM port? Will that work?

Thanks for the help!

Click to expand...

if you read the manual you can get the pin out information (which pin of the rj12 port does what) and you can do the same with the bar code reader with a 9 pin serial port and you could then build the adapter cable quite easily.

Thanks for your help guys!