Canbus Cable

[gerard]

Hi,Has anyone connected a canbus connection, and if so, what type of cable did you use? Was it just normal sheilded cat5?Gerard

 

[chrish_1977]

CANBus network is just a digital signal sent over cable normally cat5 or whatever is specced, depends on what you want it to do

 

[Jimsparky]

I've never heard of canbus ? Is it like modbus etc ? If so we use an Belden 9841 for it. Is it an rs485 signal ?

 

[Jimsparky]

I had a little read up! Yes that sort of Belden is what you need and the last digit relates to how many pairs there are in the cable. Each pair is individually screened and then an overall foil. Cat 5 is not ideal for rs485 type applications.

 

[Tesla1980]

just say no and call frank

 

[JD6400]

Like Jimsparky says , but you sometimes can get away with cat 5 it depends on what you want it for ?

 

[gerard]

i'm using it to join a hmi to an expansion module, this module will then be connected to the i/o's, analog inputs/outputs, etc. It's a Unitronics HMI/PLC combination..

 

[Jimsparky]

If it analogue then I would use the cable I said earlier. Don't really want any rf etc

 

[JD6400]

i'm using it to join a hmi to an expansion module, this module will then be connected to the i/o's, analog inputs/outputs, etc. It's a Unitronics HMI/PLC combination..

Sorry fella , that one is beyond my knowledge .

 

[gerard]

I will probably try shielded cat 5 first(because I have some), in the meantime I will try and sort some belden cable...thanks

 

[Jimsparky]

Yeah it's pretty readily available. I only know about it as I'm changing a load of cat 6 at the moment for the Belden as they are having interference problems. This is for modbus but its a similar idea

 

[gerard]

Oh right, just looked on radionics, they only sell by roll, will try and get my hands on a 2m piece somewhere.......

 

[Jimsparky]

Here abouts are you ? I just bought 300m

 

[vaughant]

Usually canbus or profibus cables are purple in their covering,well everyone I've ever seen is.
Sheilded stuff as well.

 

[UKMeterman]

Oh right, just looked on radionics, they only sell by roll, will try and get my hands on a 2m piece somewhere.......

If you are just going 2m use 0035800 - LAPP KABEL - CABLE, SCRN, 2PAIR, GREY, 0.25MM | Farnell United Kingdom buy a longer length and try to identify the pairs in the cable and only use one pair. Note you will need 120 ohm terminations at both ends of the link.

 

[i4Automation]

We supply and use Lutze CANbus cable 104206. Cat 5 might work for shorter distances. The problem is when you get noise or ANY other problem and its becomes easy to blame the cable first as its not to specification. Please don't forget the termination resistors they come in the packet.