Spindle Encoder to Mesa 5i20

[RogerN]

I have my encoder connected and it shows counts on the Axis HAL configuration window. I took the info from nist-lathe and pluto-lathe and added the lines to the end of my m5i20 motion hal file. When I run the application, I get:
hal error signal 'spindle-index-enable' already has output or I/O pin(s)

From nist-lathe:
# hook up motion controller's spindle indexing pin
newsig spindle-index-enable bit
linkps motion.spindle-index-enable <=> spindle-index-enable
linksp spindle-index-enable <=> counter.0.index-enable

From lathe-pluto:
newsig spindle-index-enable bit
linkps motion.spindle-index-enable <=> spindle-index-enable
linksp spindle-index-enable <=> pluto-servo.encoder-2-index-enable

My m5i20 motion addition:
newsig spindle-index-enable bit
linkps motion.spindle-index-enable <=> spindle-index-enable
linksp spindle-index-enable <=> m5i20.0.enc-03-index


Any ideas on what I'm doing wrong?


Thanks!
Roger Neal

[samco]

did you see this on the user list?

RogerN wrote: > My m5i20 motion addition: > > newsig spindle-index-enable bit > linkps motion.spindle-index-enable <=> spindle-index-enable > linksp spindle-index-enable <=> m5i20.0.enc-03-index The last line should be: linksp spindle-index-enable <=> m5i20.0.enc-03-latch-index Its confusing that the 2.1.x version of the 5i20 driver doesn't use the same naming convention as the other drivers. What most drivers call "index-enable", it calls "latch-index". I'm not 100% sure that indexing works correctly in the 2.1.x version of the 5i20 driver. But "halcmd show pin *index*" shows "latch-index" as the only bidirectional pin on the 5i20 encoder. Regards, John Kasunich

[RogerN]

John, I used the latch-index instead of index and it did get rid of the error in trying to run emc2. I tried the G76 canned threading cycle in the example files. The cycle ran cutting air but the z speed didn't slow down or speed up with the spindle. I think the example program was set for 20tpi, I was probably cutting 1 to 5 tpi (guess, my air thread guage isn't real accurate :-). I actually stopped the spindle and it still threaded at the same speed.

Since the index works on other hardware, could I just use a m5i20 spare input for the index pulse?

Or could this be configured for a unidirectional spindle index pulse? (I don't understand how EMC2 uses the spindle-index-enable bidirectionaly.

Thanks!
Roger

[visky]

newsig spindle-index-enable bit
linkps motion.spindle-index-enable <=> spindle-index-enable
linksp spindle-index-enable <=> m5i20.0.enc-05-latch-index

I wrote this into 5i20_motion.hal file and get error message:
Can not link"m5i20.0.enc-05"

What i am doing wrong? Do i have to write any additional code for spindle index?

I would like to use input pins for Y axis-> 05,06,07 input pins from P3 conector.

Also, if i add this code ( from ninst-lathe ) for spindle feedback :

# I/O thru the parport
loadrt hal_parport cfg="0x0378"
# counting the spindle counter in software
loadrt counter num_chan=1
# misc blocks needed to do fun things
loadrt ddt count=6
# spindle speed feedback
loadrt lowpass count=1
loadrt mult2 count=1
loadrt scale count=1
# first we read parport inputs
addf parport.0.read base-thread
# update counter
addf counter.update-counters base-thread

# differentiators to make vel and acc signals
addf ddt.0 servo-thread
addf ddt.1 servo-thread
addf ddt.2 servo-thread
addf ddt.3 servo-thread
addf ddt.4 servo-thread
addf ddt.5 servo-thread

addf lowpass.0 servo-thread
addf mult2.0 servo-thread

# Spindle speed feedback -- spindle-speed-fb-rpm can be metered or scoped
# but beware that at the highest speeds the software-based counter cannot
# keep up, and the speed is estimated incorrectly
newsig spindle-speed-fb-raw float
newsig spindle-speed-fb-filtered float
newsig spindle-speed-fb-rpm float

# The gain of the lowpass filter is a trade-off: Higher numbers track spindle
# speed better when the speed changes. Lower numbers give a more steady
# estimate of average spindle speed when the speed is nominally constant
setp lowpass.0.gain 0.01
linkps counter.0.velocity => spindle-speed-fb-raw
linksp spindle-speed-fb-raw => lowpass.0.in
linkps lowpass.0.out => spindle-speed-fb-filtered

setp mult2.0.in0 60
linksp spindle-speed-fb-filtered mult2.0.in1
linkps mult2.0.out spindle-speed-fb-rpm

newsig spindle-phase-Z bit
linksp spindle-phase-Z => counter.0.phase-Z
linkps parport.0.pin-13-in => spindle-phase-Z
setp counter.0.position-scale 1024

# hook up motion controller's spindle indexing pin
newsig spindle-index-enable bit
linkps motion.spindle-index-enable <=> spindle-index-enable
linksp spindle-index-enable <=> counter.0.index-enable

# report our revolution count to the motion controller
newsig spindle-pos float
linkps counter.0.position => spindle-pos
linksp spindle-pos => motion.spindle-revs

will it count?

I will run my VFD with 0-10Volt .

How can i solve my problem?