Emco Toolchanger Wiring & 7i77

I've placed them here for you. ( was having issues attaching )

can someone explain to me what needs be done by a neophyte to use this? Not quite sure about the whole parallel port and voltage divider bit..

###############Toolchanger#########################

loadrt emcochanger
addf emcochanger servo-thread

loadrt timedelay count=2
addf timedelay.0 servo-thread
# will wait 2 secs approx and turn motor off after reversing against stop
setp timedelay.0.on-delay 0.8

#Toolchanger delay time before reverse lock
addf timedelay.1 servo-thread
setp timedelay.1.on-delay 0.2


net tool-change iocontrol.0.tool-change => emcochanger.toolchange
net tool-changed iocontrol.0.tool-changed <= emcochanger.toolchanged
net tool-number iocontrol.0.tool-prep-number => emcochanger.toolnumber
net tool-oldnumber iocontrol.0.tool-number => emcochanger.currenttoolnumber
net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared

net sig1 emcochanger.opto1 <= hm2_5i25.0.7i76.0.0.input-07
net sig2 emcochanger.opto2 <= hm2_5i25.0.7i76.0.0.input-08
net sig3 emcochanger.opto3 <= hm2_5i25.0.7i76.0.0.input-09
net sig4 emcochanger.opto4 <= hm2_5i25.0.7i76.0.0.input-10

#direction signal for toolchanger
net sig-forward emcochanger.forward => parport.0.pin-16-out

#run signal for toolchanger
net x-enable => pwmgen.0.enable
net pwmgen_value pwmgen.0.value <= emcochanger.setpwm
net pwmgen_out pwmgen.0.pwm => parport.0.pin-17-out

setp parport.0.pin-14-out-invert 1
setp parport.0.pin-16-out-invert 1


net xhomed axis.0.homed => emcochanger.ishomedX
net zhomed axis.2.homed => emcochanger.ishomedZ

net delaystart timedelay.0.in <= emcochanger.delaystart
net delaydone timedelay.0.out => emcochanger.delaydone

net delaystart1 timedelay.1.in <= emcochanger.delaystart1
net delaydone1 timedelay.1.out => emcochanger.delaydone1

# if the delay is too long in switching relays for forward and reverse
# setp emcochanger.times 300
# for instance will make it shorter, default is 500 - about 1-2 secs on my system

ArcEye wrote:

Hi I assume you mean the component?

ArcEye wrote:

If you are using a Mesa daughter board and your outputs from the optos on the toolchanger are <=24v, you should be able to connect them direct to the 7i7x inputs Just make sure that the signal is 8v+ and over 60% of the field voltage, which it should be even if you are powering from 34v

ArcEye wrote:

something like
net atc-opto1 hm2_5i25.0.7i7x.0.0.input-00 => emcochanger.opto1

Bad_German was connecting to a BOB onto the parport, so had to knock the voltage down to 5v, you should not need to.

The new configs have all the connections onto a 7i76

###############Toolchanger#########################

loadrt emcochanger
addf emcochanger servo-thread

loadrt timedelay count=2
addf timedelay.0 servo-thread
# will wait 2 secs approx and turn motor off after reversing against stop
setp timedelay.0.on-delay 0.8

#Toolchanger delay time before reverse lock
addf timedelay.1 servo-thread
setp timedelay.1.on-delay 0.2


net tool-change iocontrol.0.tool-change => emcochanger.toolchange
net tool-changed iocontrol.0.tool-changed <= emcochanger.toolchanged
net tool-number iocontrol.0.tool-prep-number => emcochanger.toolnumber
net tool-oldnumber iocontrol.0.tool-number => emcochanger.currenttoolnumber
net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared

net sig1 emcochanger.opto1 <= hm2_5i25.0.7i76.0.0.input-07
net sig2 emcochanger.opto2 <= hm2_5i25.0.7i76.0.0.input-08
net sig3 emcochanger.opto3 <= hm2_5i25.0.7i76.0.0.input-09
net sig4 emcochanger.opto4 <= hm2_5i25.0.7i76.0.0.input-10

#direction signal for toolchanger
net sig-forward emcochanger.forward => parport.0.pin-16-out

#run signal for toolchanger
net x-enable => pwmgen.0.enable
net pwmgen_value pwmgen.0.value <= emcochanger.setpwm
net pwmgen_out pwmgen.0.pwm => parport.0.pin-17-out

setp parport.0.pin-14-out-invert 1
setp parport.0.pin-16-out-invert 1


net xhomed axis.0.homed => emcochanger.ishomedX
net zhomed axis.2.homed => emcochanger.ishomedZ

net delaystart timedelay.0.in <= emcochanger.delaystart
net delaydone timedelay.0.out => emcochanger.delaydone

net delaystart1 timedelay.1.in <= emcochanger.delaystart1
net delaydone1 timedelay.1.out => emcochanger.delaydone1

# if the delay is too long in switching relays for forward and reverse
# setp emcochanger.times 300
# for instance will make it shorter, default is 500 - about 1-2 secs on my system

You just need to replace the couple of parport out pins that he still uses with 7i7x out pins and possibly replace the software pwm with a hardware one off the board.

I suspect the timing parameter emcochanger.times will need playing with to compensate for IO being so much faster
but once you get that far you have it running!

regards

ArcEye wrote:

Hi I assume you mean the component?

ArcEye wrote:

You just need to replace the couple of parport out pins that he still uses with 7i7x out pins and possibly replace the software pwm with a hardware one off the board.

I think I am only now beginning to understand a little more about what Bad German was speaking of... The "Voltage Divider"... Okay, so according to my reading, an H-Bridge is a way to control a motor's direction. Either clockwise, or anti-clockwise. So he's turning the motor one way to index tools, and then turning the motor the other way to lock it against the pawl, and in place. The Voltage Divider ( which I am reading is two properly selected resistors ) is placed on the reversing side of the circuit so that the motor is not always sucking in the full 24VDC, and thus - doesn't burn itself up over time. The assumption being that that 12VDC is enough to keep it in place but little enough to avoid burning it up. Supposedly it is also how Emco did it from the factory... I hope I got this right.