setting up Moeller VFD to chinese spindle

[routercnc]

Thanks for that info. Does anyone make a convertor with an RJ45 female socket in, so that the RJ45 cable from the VFD can be plugged into that?

So the chain would be:
VFD > RJ45 cable > [female RJ45 in / convertor box / cable out] > RS485 PCI card in PC.

Otherwise, it seems a bit messy. Using the £16.99 RS solution with the block terminals it would seem that I have to strip out one end of the RJ45 cable, and connect the 2 signal pins. Is that correct?

Also the manual states that resistors are required at each end of the cable, with an note on watching the impedances. Do these solutions above include that feature already?

[ecat]

Thanks for that info. Does anyone make a convertor with an RJ45 female socket in, so that the RJ45 cable from the VFD can be plugged into that?

So the chain would be:
VFD > RJ45 cable > [female RJ45 in / convertor box / cable out] > RS485 PCI card in PC.

Otherwise, it seems a bit messy. Using the £16.99 RS solution with the block terminals it would seem that I have to strip out one end of the RJ45 cable, and connect the 2 signal pins. Is that correct?

Also the manual states that resistors are required at each end of the cable, with an note on watching the impedances. Do these solutions above include that feature already?

I'm sure you'll find something with a RJ45 socket, may put up the cost. The word 'industrial' means multiply by x where x is between 2 and 10.

How good is your soldering ?
http://www.rapidonline.com/Cables-Co...on-jacks/63744

from what I can tell this is a simple socket, it's certainly cheap. Watch out for cat5 sockets that contain additional components, inductors etc

An RS485 installation should ideally have a resistor at each end of the cable run, you can chain multiple devices over quite a distance, this minimises problems with reflections. Are these resistors necessary for a short run? I can't say for sure, you may get away with one or even none at all. It's worth getting a couple just in case but I see the dv51 lacks a switchable internal resistor - probably a feature on the deluxe model (!!) - so some cable hacking will be necessary to fit a resistor at that end.