Cat6 comms question.

kseafield

Member
Join Date
Mar 2012
Location
Napier
Posts
8
Hi guys, hopefully someone here has a logical explanation for me on this one.

We ran some Cat6 cable from a HMI (Proface) to a switch about 50 meters away, that was connected to a laptop (from the dumb switch) for remote viewing. On the HMI side we terminated the cable with a normal RJ45 plug connector which went into a dumb industrial switch in the control panel. On the laptop side we done the same going into another switch. After all this, I couldn't establish any comms from the laptop to the HMI and after a whole day messing around with this, which included cable testing using two different cable testers that showed good connection statuses.....Someone in the office suggested using RJ45 socket connectors and normal pre-made patch leads from there on both sides. I wasn't convinced that this would work but was willing to try anything and done it, after we changed the connections over the comms worked immediately without issues. I've been working in the automation industry for a while now but haven't seen something like this before, does anyone have a logical explaining for me???
 
No nightline, no shield connected.......all the connections are exactly the same, the only difference is: plugs to sockets.
 
There are 2 different orders for connecting the cores in a cat5 or 6 cable, so I would guess you choose the wrong one. Both will test ok but it must match the rest of the network
 

Similar Topics

Good Afternoon, I'm building a 480 volt control panel with PowerFlex 525 drives . These drives are Ethernet. I have a mixture of Cat 6...
Replies
22
Views
6,747
I am working on setting up a Prosoft Datalogger model PLX51-DLplus-232. This unit will be collecting data from a SLC 5/05 on the DB9 port set to...
Replies
3
Views
105
Hello, can someone share/explain How to check comms between PC and PLC via TeamViewer? TIA
Replies
14
Views
391
Has anyone setup communications with Red Lion 3.0 MODBUS to Baker Hughes Centrilift GCS VFD? Thanks
Replies
0
Views
92
Hi , Looking for some help. We have a 343-1 PN Lean Card & 315-2DP connected to an external system collecting data. After a recent shutdown...
Replies
0
Views
69
Back
Top Bottom