Cabling a 7i76e to a Lichuan B2 Servodriver

Hello,

I have a mesa 7i76e board and I want to connect it to a Lichuan B2 Servodriver in Step/Dir (Positioning Mode)...as a Spindle.

I connected the pins 1,2,3, and 4 to the Step/Dir Connections of the MesaCard. (like its said in Documentation)
 
but nothing happens if I try to turn the Spindle....
I think I also have to connect the pin 5 to the mesacard to enable the Servodrive.
But what pin on mesacard can I use to connect to pin5  (Servo-on / SON)
 

Thanks a lot for your help

Greetings Olli
 

When you made configugation of your machine at start, you must saw "Amplifier EN" or so-on. That pin you connect to enable servodrives.
You can add your .hal file to get more answers for your topic

For the active low spindle enable, I would use the 7I76E spindle enable output:
7I76E          DRIVE
6 ENA+ --> 5 SERVO-ON
5 ENA- --> 31 COM

I will try that ...

Thanks to you
aleksamc and
PCW

Greetings Olli

I did that cabling like you said PCW ...
I am rather new to LINUXCNC -
I am trying to tell in PNCConf the "SPIN enable" but in in PNCConf the pins habe other number than on card - there is no TB2 TB3 ...
The pins are just numbered up to pin50.
Does anybody habe a pivture of the mapping?

Thanks a lot in advance!

Olli

The pin you need to link to spindle on in the hal file is hm2_7i76e.0.7i76.0.0.spinena

Thanks a lot PCW,

I will try that today in the evening ....

Hi,
Today I tried to include your command "hm2_7i76e.0.7i76.0.0.spinena "

But it doesnt work ...
I used pncconf and just tried to include your command:

here is my hal:

# Erstellt von PNCconf am Wed Oct 6 18:34:45 2021
# Using LinuxCNC version: 2.8
# Änderungen an dieser Datei werden beim nächsten
# overwritten when you run PNCconf again

loadrt [KINS]KINEMATICS
loadrt [EMCMOT]EMCMOT servo_period_nsec=[EMCMOT]SERVO_PERIOD num_joints=[KINS]JOINTS
loadrt hostmot2
loadrt hm2_eth board_ip="10.10.10.10" config=" num_encoders=1 num_pwmgens=0 num_stepgens=5"
setp [HMOT](CARD0).watchdog.timeout_ns 5000000
loadrt pid names=pid.x,pid.y,pid.z,pid.s
loadrt abs names=abs.spindle
loadrt lowpass names=lowpass.spindle

addf [HMOT](CARD0).read servo-thread
addf motion-command-handler servo-thread
addf motion-controller servo-thread
addf pid.x.do-pid-calcs servo-thread
addf pid.y.do-pid-calcs servo-thread
addf pid.z.do-pid-calcs servo-thread
addf pid.s.do-pid-calcs servo-thread
addf abs.spindle servo-thread
addf lowpass.spindle servo-thread
addf [HMOT](CARD0).write servo-thread
setp [HMOT](CARD0).dpll.01.timer-us -50
setp [HMOT](CARD0).stepgen.timer-number 1

# external output signals

# --- SPINDLE-ENABLE ---
net spindle-enable => hm2_7i76e.0.7i76.0.0.spinena

# external input signals

#*******************
# AXIS X JOINT 0
#*******************

setp pid.x.Pgain [JOINT_0]P
setp pid.x.Igain [JOINT_0]I
setp pid.x.Dgain [JOINT_0]D
setp pid.x.bias [JOINT_0]BIAS
setp pid.x.FF0 [JOINT_0]FF0
setp pid.x.FF1 [JOINT_0]FF1
setp pid.x.FF2 [JOINT_0]FF2
setp pid.x.deadband [JOINT_0]DEADBAND
setp pid.x.maxoutput [JOINT_0]MAX_OUTPUT
setp pid.x.error-previous-target true
# This setting is to limit bogus stepgen
# velocity corrections caused by position
# feedback sample time jitter.
setp pid.x.maxerror 0.012700

net x-index-enable <=> pid.x.index-enable
net x-enable => pid.x.enable
net x-pos-cmd => pid.x.command
net x-pos-fb => pid.x.feedback
net x-output <= pid.x.output

# Step Gen signals/setup

setp [HMOT](CARD0).stepgen.00.dirsetup [JOINT_0]DIRSETUP
setp [HMOT](CARD0).stepgen.00.dirhold [JOINT_0]DIRHOLD
setp [HMOT](CARD0).stepgen.00.steplen [JOINT_0]STEPLEN
setp [HMOT](CARD0).stepgen.00.stepspace [JOINT_0]STEPSPACE
setp [HMOT](CARD0).stepgen.00.position-scale [JOINT_0]STEP_SCALE
setp [HMOT](CARD0).stepgen.00.step_type 0
setp [HMOT](CARD0).stepgen.00.control-type 1
setp [HMOT](CARD0).stepgen.00.maxaccel [JOINT_0]STEPGEN_MAXACCEL
setp [HMOT](CARD0).stepgen.00.maxvel [JOINT_0]STEPGEN_MAXVEL

# ---closedloop stepper signals---

net x-pos-cmd <= joint.0.motor-pos-cmd
net x-vel-cmd <= joint.0.vel-cmd
net x-output <= [HMOT](CARD0).stepgen.00.velocity-cmd
net x-pos-fb <= [HMOT](CARD0).stepgen.00.position-fb
net x-pos-fb => joint.0.motor-pos-fb
net x-enable <= joint.0.amp-enable-out
net x-enable => [HMOT](CARD0).stepgen.00.enable

# ---setup home / limit switch signals---

net x-home-sw => joint.0.home-sw-in
net x-neg-limit => joint.0.neg-lim-sw-in
net x-pos-limit => joint.0.pos-lim-sw-in

#*******************
# AXIS Y JOINT 1
#*******************

setp pid.y.Pgain [JOINT_1]P
setp pid.y.Igain [JOINT_1]I
setp pid.y.Dgain [JOINT_1]D
setp pid.y.bias [JOINT_1]BIAS
setp pid.y.FF0 [JOINT_1]FF0
setp pid.y.FF1 [JOINT_1]FF1
setp pid.y.FF2 [JOINT_1]FF2
setp pid.y.deadband [JOINT_1]DEADBAND
setp pid.y.maxoutput [JOINT_1]MAX_OUTPUT
setp pid.y.error-previous-target true
# This setting is to limit bogus stepgen
# velocity corrections caused by position
# feedback sample time jitter.
setp pid.y.maxerror 0.012700

net y-index-enable <=> pid.y.index-enable
net y-enable => pid.y.enable
net y-pos-cmd => pid.y.command
net y-pos-fb => pid.y.feedback
net y-output <= pid.y.output

# Step Gen signals/setup

setp [HMOT](CARD0).stepgen.01.dirsetup [JOINT_1]DIRSETUP
setp [HMOT](CARD0).stepgen.01.dirhold [JOINT_1]DIRHOLD
setp [HMOT](CARD0).stepgen.01.steplen [JOINT_1]STEPLEN
setp [HMOT](CARD0).stepgen.01.stepspace [JOINT_1]STEPSPACE
setp [HMOT](CARD0).stepgen.01.position-scale [JOINT_1]STEP_SCALE
setp [HMOT](CARD0).stepgen.01.step_type 0
setp [HMOT](CARD0).stepgen.01.control-type 1
setp [HMOT](CARD0).stepgen.01.maxaccel [JOINT_1]STEPGEN_MAXACCEL
setp [HMOT](CARD0).stepgen.01.maxvel [JOINT_1]STEPGEN_MAXVEL

# ---closedloop stepper signals---

net y-pos-cmd <= joint.1.motor-pos-cmd
net y-vel-cmd <= joint.1.vel-cmd
net y-output <= [HMOT](CARD0).stepgen.01.velocity-cmd
net y-pos-fb <= [HMOT](CARD0).stepgen.01.position-fb
net y-pos-fb => joint.1.motor-pos-fb
net y-enable <= joint.1.amp-enable-out
net y-enable => [HMOT](CARD0).stepgen.01.enable

# ---setup home / limit switch signals---

net y-home-sw => joint.1.home-sw-in
net y-neg-limit => joint.1.neg-lim-sw-in
net y-pos-limit => joint.1.pos-lim-sw-in

#*******************
# AXIS Z JOINT 2
#*******************

setp pid.z.Pgain [JOINT_2]P
setp pid.z.Igain [JOINT_2]I
setp pid.z.Dgain [JOINT_2]D
setp pid.z.bias [JOINT_2]BIAS
setp pid.z.FF0 [JOINT_2]FF0
setp pid.z.FF1 [JOINT_2]FF1
setp pid.z.FF2 [JOINT_2]FF2
setp pid.z.deadband [JOINT_2]DEADBAND
setp pid.z.maxoutput [JOINT_2]MAX_OUTPUT
setp pid.z.error-previous-target true
# This setting is to limit bogus stepgen
# velocity corrections caused by position
# feedback sample time jitter.
setp pid.z.maxerror 0.012700

net z-index-enable <=> pid.z.index-enable
net z-enable => pid.z.enable
net z-pos-cmd => pid.z.command
net z-pos-fb => pid.z.feedback
net z-output <= pid.z.output

# Step Gen signals/setup

setp [HMOT](CARD0).stepgen.02.dirsetup [JOINT_2]DIRSETUP
setp [HMOT](CARD0).stepgen.02.dirhold [JOINT_2]DIRHOLD
setp [HMOT](CARD0).stepgen.02.steplen [JOINT_2]STEPLEN
setp [HMOT](CARD0).stepgen.02.stepspace [JOINT_2]STEPSPACE
setp [HMOT](CARD0).stepgen.02.position-scale [JOINT_2]STEP_SCALE
setp [HMOT](CARD0).stepgen.02.step_type 0
setp [HMOT](CARD0).stepgen.02.control-type 1
setp [HMOT](CARD0).stepgen.02.maxaccel [JOINT_2]STEPGEN_MAXACCEL
setp [HMOT](CARD0).stepgen.02.maxvel [JOINT_2]STEPGEN_MAXVEL

# ---closedloop stepper signals---

net z-pos-cmd <= joint.2.motor-pos-cmd
net z-vel-cmd <= joint.2.vel-cmd
net z-output <= [HMOT](CARD0).stepgen.02.velocity-cmd
net z-pos-fb <= [HMOT](CARD0).stepgen.02.position-fb
net z-pos-fb => joint.2.motor-pos-fb
net z-enable <= joint.2.amp-enable-out
net z-enable => [HMOT](CARD0).stepgen.02.enable

# ---setup home / limit switch signals---

net z-home-sw => joint.2.home-sw-in
net z-neg-limit => joint.2.neg-lim-sw-in
net z-pos-limit => joint.2.pos-lim-sw-in

#*******************
# SPINDLE
#*******************

setp pid.s.Pgain [SPINDLE_0]P
setp pid.s.Igain [SPINDLE_0]I
setp pid.s.Dgain [SPINDLE_0]D
setp pid.s.bias [SPINDLE_0]BIAS
setp pid.s.FF0 [SPINDLE_0]FF0
setp pid.s.FF1 [SPINDLE_0]FF1
setp pid.s.FF2 [SPINDLE_0]FF2
setp pid.s.deadband [SPINDLE_0]DEADBAND
setp pid.s.maxoutput [SPINDLE_0]MAX_OUTPUT
setp pid.s.error-previous-target true
# This setting is to limit bogus stepgen
# velocity corrections caused by position
# feedback sample time jitter.
setp pid.s.maxerror 0.012700

net spindle-index-enable <=> pid.s.index-enable
net spindle-enable => pid.s.enable
net spindle-vel-cmd-rpm => pid.s.command
net spindle-vel-fb-rpm => pid.s.feedback
net spindle-output <= pid.s.output

# Step Gen signals/setup

setp [HMOT](CARD0).stepgen.04.dirsetup [SPINDLE_0]DIRSETUP
setp [HMOT](CARD0).stepgen.04.dirhold [SPINDLE_0]DIRHOLD
setp [HMOT](CARD0).stepgen.04.steplen [SPINDLE_0]STEPLEN
setp [HMOT](CARD0).stepgen.04.stepspace [SPINDLE_0]STEPSPACE
setp [HMOT](CARD0).stepgen.04.position-scale [SPINDLE_0]STEP_SCALE
setp [HMOT](CARD0).stepgen.04.step_type 0
setp [HMOT](CARD0).stepgen.04.control-type 1
setp [HMOT](CARD0).stepgen.04.maxaccel [SPINDLE_0]MAX_ACCELERATION
setp [HMOT](CARD0).stepgen.04.maxvel [SPINDLE_0]MAX_VELOCITY

net spindle-enable => [HMOT](CARD0).stepgen.04.enable
net spindle-vel-cmd-rps => [HMOT](CARD0).stepgen.04.velocity-cmd
net spindle-vel-fb-rps <= [HMOT](CARD0).stepgen.04.velocity-fb
# ---setup spindle control signals---

net spindle-vel-cmd-rps <= spindle.0.speed-out-rps
net spindle-vel-cmd-rps-abs <= spindle.0.speed-out-rps-abs
net spindle-vel-cmd-rpm <= spindle.0.speed-out
net spindle-vel-cmd-rpm-abs <= spindle.0.speed-out-abs
net spindle-enable <= spindle.0.on
net spindle-cw <= spindle.0.forward
net spindle-ccw <= spindle.0.reverse
net spindle-brake <= spindle.0.brake
net spindle-revs => spindle.0.revs
net spindle-at-speed => spindle.0.at-speed
net spindle-vel-fb-rps => spindle.0.speed-in
net spindle-index-enable <=> spindle.0.index-enable

# ---Setup spindle at speed signals---

sets spindle-at-speed true


#******************************
# connect miscellaneous signals
#******************************

# ---HALUI signals---

net axis-select-x halui.axis.x.select
net jog-x-pos halui.axis.x.plus
net jog-x-neg halui.axis.x.minus
net jog-x-analog halui.axis.x.analog
net x-is-homed halui.joint.0.is-homed
net axis-select-y halui.axis.y.select
net jog-y-pos halui.axis.y.plus
net jog-y-neg halui.axis.y.minus
net jog-y-analog halui.axis.y.analog
net y-is-homed halui.joint.1.is-homed
net axis-select-z halui.axis.z.select
net jog-z-pos halui.axis.z.plus
net jog-z-neg halui.axis.z.minus
net jog-z-analog halui.axis.z.analog
net z-is-homed halui.joint.2.is-homed
net jog-selected-pos halui.axis.selected.plus
net jog-selected-neg halui.axis.selected.minus
net spindle-manual-cw halui.spindle.0.forward
net spindle-manual-ccw halui.spindle.0.reverse
net spindle-manual-stop halui.spindle.0.stop
net machine-is-on halui.machine.is-on
net jog-speed halui.axis.jog-speed
net MDI-mode halui.mode.is-mdi

# ---coolant signals---

net coolant-mist <= iocontrol.0.coolant-mist
net coolant-flood <= iocontrol.0.coolant-flood

# ---probe signal---

net probe-in => motion.probe-input

# ---motion control signals---

net in-position <= motion.in-position
net machine-is-enabled <= motion.motion-enabled

# ---digital in / out signals---

# ---estop signals---

net estop-out <= iocontrol.0.user-enable-out
net estop-out => iocontrol.0.emc-enable-in

# ---manual tool change signals---

loadusr -W hal_manualtoolchange
net tool-change-request iocontrol.0.tool-change => hal_manualtoolchange.change
net tool-change-confirmed iocontrol.0.tool-changed <= hal_manualtoolchange.changed
net tool-number iocontrol.0.tool-prep-number => hal_manualtoolchange.number
net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared

When hm2_7i76e.0.7i76.0.0.spinena is true, the ENA+ and ENA- pins on the
7I76E should be connected. You should be able to verify this with halshow and an Ohmmeter

Hi PCW,

Yes - you did it ...
Now I see that the motor is activated - one step futher!
By the way I really want to thank you for help. I really do appreciate that!!!
Thanks a lot.

But the motor doesn't turn if I try to ...
Tomorrow I will check if I did all the settings in the servodriver right and the cabling:
I connected:
Servodriverside to /i76e
Pulse+ to Step+
Pulse- to Step-
Dir+ to Dir+
Dir- to Dir-

Thanks a lot
Olli