Closed loop control with linear encoders - Page 2 - CNCzone.com-The Largest Machinist Community on the net!

ViperTX · #13 05-26-2005, 05:45 PM

Depends on what you're using for drivers.

CNCgr · #14 05-26-2005, 05:58 PM

What are the options? I don't have a clue about EMC

ViperTX · #15 05-26-2005, 10:20 PM

Go to the EMC site....hmmmm...it was with NIST....but I believe it's linuxcnc.org/links.html ....anyway they have a list of drivers and axis cards they support.

pauldkeeton · #16 10-14-2007, 02:04 PM

I would say only incremental...For absolute to work the encoder would have to report its position when the control is started. This is usually done by sending a "request to send" to a serial interface encoder. The encoder usually has a battery backup to read changes in position while the control is powered down. I have'nt seen many "A Quad B" encoders that are absolute. As a matter of fact, I have only seen one. It doesn't take that long to home each axis at the start of work......Absolute scales are really not worth the headaches......

Paul

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Open & closed loop	totsandman	Benchtop Machines	3	05-07-2005 08:49 AM
How Should I Mount Linear Encoders?	lerman	General Metal Working Machines	6	01-13-2005 03:50 PM
Closed loop....open loop?	DAB_Design	General Electronics Discussion	10	06-26-2004 04:02 PM
Closed Loop Driver vs. Closed Loop Computer	ojibberish	Gecko Drives	3	06-08-2004 11:30 AM
closed loop	georgebarr	DIY-CNC Router Table Machines	9	06-01-2003 09:39 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)