Need help addressing configuration word for Phoenix Contact CANBUS coupler to a 12 bit, binary, 100kHz, absolute encoder. I think it is supposed to be a PDO?

 

Reading the term "PDO" I would assume you are speaking about a CANopen device. Typical, configuration data are transferred by SDO communication. If the encoder is working according CiA 406, the standard defines the addresses of configuration data. Do you know the manufacturer and device type?

Regards,
Heinz

 

First, thank you for the reply. You are correct on both counts. The device (manufacturer�s designation IL CAN BK-TC, user manual and data sheet 1605B, are online) is for CANopen by Phoenix Contact (www.phoenixcon.com), and can be used to interface various items to CAN, including discrete or analog I/O, or encoders. After I posted my �SOS� for help, I read that I should, as you suggested, use an SDO to configure the coupler, and a PDO to read the position (BEI absolute encoder, 12 bit binary, SSI output), but have still had no luck with the configuration! It also seems to me, that maybe I should be able to use the eds file? I have a utility, (PCAN View by Vector), which enables me to monitor the CANbus for any traffic, and send messages.

Regards,
Steve

 

Steve, I had a look at the IL CAN BK-TC. Its a bus coupler type device, That means the behavior depends on the connected I/O modules, I didn't
found the description of the encoder interface, sorry.

One last remark to the used tools. PCAN View is a Peak-system product, not Vector. Anyway it's a simple analyser, and it will become difficult issuing SDO frames. Tools like CANopen Device Monitor (Demo at http://www.canopen-tools.com) are better suited for CANopen configuration and test. It's able to read EDS files and allows an much easier access to an CANopen object dictionary via SDO.

Regards
Heinz

with best regards / mit freundlichen Grüßen
Heinz-Jürgen Oertel

http://www.port.de
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