Igor, My Uncle has a few of those Haas 5C units. Back in the late 80's or early 90's Haas sent me a small potted interface box to allow the Haas 5C to be used on our Hurco mill. 4 wires to the CNC, 4 wires to Haas. Its a simple opto isolation unit. I have the schematic for it.
Basically most machines will have a misc function M code that will trigger a relay. Depending on how the machine tool builder set it up it may close the circuit for 1/4 second or it may stay closed until cycle is complete. On some controls you can set this behavior via parameters however that was not an option for me. Thankfully you can change the parameters in the Haas so it knows what to expect. I may be wrong but I think the stepper driver in the Haas is wired as a 6 wire unipolar set for half step - which means if you were to bypass the Haas box and get a female mating Amphenol you could also drive the motor Bipolar half coil or bipolar serial (full coil). I have the factory manual which covers programing, parameters, tear down and renewal and adjusting the worm gear backlash. FYI to those who have not used this model - it does not have a break since the worm gear usually has no slop and with something like a 72:1 on the worm gear the stepper motor has no problem holding position. These units are very open loop - in that the Haas control never knows if the unit did the commanded move (there is a slip clutch to prevent an over torque) and the machine can only request cycle start and receive a cycle complete. Its easy for the Haas control and CNC control programs to get out of sync any time both are not started from the beginning. I'm looking for one to use on my Hurco, My Uncle has three but won't share :( Since my Hurco is running good as is I won't be converting it to EMC until something cost prohibitive fails in the control. The Haas controller is a poor fit for EMC, but the Iron is top notch and if you made a housing for a Gecko 201X or 203V with the proper Amphenol connector you could drive those directly from EMC. Homing would be by just jogging until the dials were zeroed out - remember those dials can slip too. Homing repeatability will only be as accurate as one minute of eyeball. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ On the CNC4PC boards: Might get some thin 1/2" aluminum angle and do a DB25 cutout in it - mount to each DB25 behind the standoffs and use screws through the other leg as your mount points. ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
