Fanuc servo drivers with fiber optic

I have no idea how to do this, but Google seems to suggest it is possible

i used a splitter like this:
www.amazon.com/Digital-Fiber-Optical-Tos...litter/dp/B000I97G4Q
and regular toslink audio cables which are compatible with those duplex F07PN connectors

Is it possible to get such card?

yes, but it won't offer much tools for datalogging... though it will be easy to simply route RX signal to the header and hook up a scope/logic analyzer. are you familiar with xilinx tools?

dm17ry wrote:

I have no idea how to do this, but Google seems to suggest it is possible

yes, but it won't offer much tools for datalogging... though it will be easy to simply route RX signal to the header and hook up a scope/logic analyzer. are you familiar with xilinx tools?

OK, thanx a lot for suggestions. Yes, I can connect to electrical signals, but what about to use optical splitter like you and make a simple tool with optical transceiver for logging? Well, I don't have too much experiences with FPGA, I am working with MCUs long time and want to try FPGA. So it seems, the time is now What Xilinx tools do you mean?

what about to use optical splitter like you and make a simple tool with optical transceiver for logging

if you find a compatible receiver - why not? those japanese ones are pretty hard to source, but maybe it is possible to take a discrete photodiode with a bit of circuitry to get a readable signal. e.g. avago sfh250v

e.g. www.digikey.com/product-detail/en/broadc.../516-2283-ND/2391591

i have no experience with it though. or maybe you can just solder a couple of wires to the controller/amp PCB

if you get some logs to analyze - i will jump in

dm17ry wrote:

what about to use optical splitter like you and make a simple tool with optical transceiver for logging

if you find a compatible receiver - why not? those japanese ones are pretty hard to source, but maybe it is possible to take a discrete photodiode with a bit of circuitry to get a readable signal. e.g. avago sfh250v

Well, I know, transceiver in controller is Toshiba TODX2910, I cannot find datasheet, only similar ones. Byt similar transceivers should be possibe to buy.

e.g. www.digikey.com/product-detail/en/broadc.../516-2283-ND/2391591
i have no experience with it though. or maybe you can just solder a couple of wires to the controller/amp PCB

I know that soldering wires to the transceiver can seems to be easiest way, but not. You need to disassemble controller to the last screw (This I made one time) and anyway, I am afraid that connected wires can jam communication by some parasite capacity. Unfortunatelly, machine is running in production and I cannot block it for too long time.

if you get some logs to analyze - i will jump in

Great! Thanx for your offer. I will try to find a best way to log something and I will inform you.

probably you've seen that. TODX283: elcodis.com/parts/6164179/todx283.html
availatble on ebay, has a TTL interface. should do the trick, imho

So, I made some next steps: I asked Toshiba support for TODX2910 datasheet and they answered it is a custom part and they have no informations about it. Also no info about wavelenght. But I found, it is visible red. I bought some Toslink cables and splitter and tried to connect. Toslink connectors are a bit different, but it is possible to grind them and connect with Fanuc stuff. I also made simple adapter to connect toslink cables to the fanuc connector. Machine still work after I insert my cables and adapters between controller and optical cable to servodrivers. Unfortunatelly, when I also insert passive splitter, machine doesn't work. When I compared light strenght before and after passive splitter, it is possible to see too high loss, visible by eyes. I also found some active toslink splitters, so my idea is to order one to continue.