Hi all!

For this summer I'm working at a company in Sweden with a project to laser scan welds. At the moment the camera is operating from a robotcell, but now i wish to take it out of the robot onto a linear rail to be able to broaden the use of this equipment.

The scanning camera is a Micro Epsilon scanCONTROL 2950-50 red that powers from POE, the data sheet says "24 V, IEEE 802.3af".
So to be able to use it with my laptop I've bought a 24V, 12W Ubiquiti POE injector, took the first ethernet cable i could come across and plugged it in. But nothing is happening. No power to the camera and my laptop says "No ethernet calbe connected".

Since I'm not that in to networking and stuff concerning this and all of the IT people on vacation for another three weeks I'm kind of stuck.
But i remember from my days of computer gaming that we always used crossed cables to communicate directly between computers. Could this be what is causing my problems? From what i can tell the cable I am using now is NOT crossed.

I'm trying to connect the scanCONTROL camera directly from my laptop through the POE injector.

Thankful any answers that can shed some light on this!
Johan

 

Get the data sheets for both units and check the pinouts.

Can you power the camera without PoE first to check that the hookup is working?
For this you would need a crossover Ethernet cable.

 

Things might be a bit more complicated than needing a crossover cable.

Take a look at the table at the bottom of this wiki article showing pin connections for differing modes.

https://en.wikipedia.org/wiki/Power_over_Ethernet

 

Get the data sheets for both units and check the pinouts.

Can you power the camera without PoE first to check that the hookup is working?
For this you would need a crossover Ethernet cable.

No it's PoE only... I guess it starts up as soon as power is applied, it has a "STATE" LED to tell if theres data-connection or not. I will just grab a crossover cable and try it to begin with.
I've been trying to find the data sheets but theres not much about the pinouts.

Things might be a bit more complicated than needing a crossover cable.

Take a look at the table at the bottom of this wiki article showing pin connections for differing modes.

https://en.wikipedia.org/wiki/Power_over_Ethernet

Wow..! I was worried something like this would come up! haha
It seems a bit strange that the camera doesent even power up, that to points to that the power is not applied to the correct pin, or is not deliverd in the first place by the injector.
The injectoris active, (meaning it delivers power if it asked to do so by the connected device?) and so is the switch it's connected to in the robot cell today, so i guess the "deliver me powers"-message is delivered, but maybe not to the correct pin.




So the IEEE standard says nothing about the pinout of the connections, only power delivered?

 

Hello,

Did you see the pinout table on the wiki page?


In the cross cable the orange and green pairs are twisted.

Bertus

 

Hello,

Did you see the pinout table on the wiki page?

View attachment 156982
In the cross cable the orange and green pairs are twisted.

Bertus

Yup, comparing the pins of the camera now! First i need to figure out in which column to look though!

 

Hello,

It is most likely the 10/100 mode B, but look in the datasheet/manual to be sure.

Bertus

 

Hello,

It is most likely the 10/100 mode B, but look in the datasheet/manual to be sure.

Bertus

But, what to look for in the datasheet..? Wow i feel dumb!
I