I'm trying to figure out how to use Power over Ethernet (PoE) to power a barcode scanner. My wife has a Honeywell Xenon 1900, which currently uses a special cable that provides 5V power through a barrel connector. The cable has been reliable but is starting to come loose, and I want to find a way to secure the connections. I can handle soldering and crimping the wires, but I'm unsure which wires to work on. Any advice would be greatly appreciated!
5 Answers
Just a heads up, PoE typically uses 48V. If it’s custom, then Honeywell likely has specific pinouts you’ll want to check. Make sure you verify how the connections work before modifying anything.
Even though the scanner uses an 8P8C ("RJ45") connector, these usually follow USB signaling, so you're getting 5V from the same source. Those cables are often proprietary, so you can make your own but getting a ready-made replacement may save you hassle. If there's a barrel connector, it’s possible your scanner is somewhat older since it requires more power than USB usually supplies.
Barcode scanners, in my experience, can be quite frustrating. I work in a manufacturing plant and I have a love-hate relationship with them. Just sharing my thoughts!
The cable looks like it might be USB to RJ45 in design, which means it's likely that the 5V is coming from USB and not actually Ethernet. If that’s the case, you could cut off the RJ45 end and just crimp on a new connector using the same color coding as the original. If that doesn't work out, ordering a replacement cable might be your best bet.
The Honeywell 1900 uses an 8P8C connector, but remember that this isn’t true Ethernet or PoE; it’s just a connector type that could connect to USB, serial, or PS/2 peripherals. USB 2.0 should provide enough power, according to the spec sheet for the scanner.
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