Need Help!- setting up heidenhain tnc145

[kolb13]

Have a bridgeport textron series 1 with heidenhain tnc145 .We got all axis to move and count ,entered parameters [78] . Can anybody walk me through the homing sequence ? On power up you get the power interrupt message,clear that. Then the beginning of homing axis but im not sure what its to do. IE

which limit should the axis travel to first [the side with one or side with 2 limits]?

will it then go to the otherside automatically and stop, then i start next axis?

to witch limit should it count up?

when do i get the numbers for parameters 31 through 36

[gus]

you need to enter numbers for the end of travel before you home

look at the parameter lists posted elsewhere in this section.

Is your machine an interact or an r2c3? the parameters and homing sequence are different

there will be numbers you can start with in those lists, it would be wise to make all of them smaller so you do not hit a hard limit.

once you have end of travel numbers entered, it is simple
CE
[power enable]
cycle start
cycle start
cycle start
until it is done

you can gradually tweek the numbers until you get maximum travels.

[kolb13]

the bridgeport is a r2c3.We took a guess and entered:
mp31 +400
mp32 -400
mp33 +400
mp34 -400
mp35 +400
mp36 -400
Then changed mp 26[polarity of output voltage], mp 23,24,25[counting direction x,y,z] and mp 18,19,20[approach direction to the reference marks]untill each axis traveled directly to the side with two limit switches and stopped with the counts going up as it approached limits. But thats all it did. I dont think it homed properly because i didnt do any thing else?

I found a parameter list:
mp31 +457,327 mp 32 -1270 mp33 +304,928 mp34 -1270 mp35 +1270 mp36
-127127. Are these better numbers to start with?

[gus]

there is a valid r2c3 parameter list posted in this forum

use it and decrease the end of travel numbers by a small amount

the numbers you entered will assure you will slam into a hard stop

[kolb13]

I found the parameter list you mentioned. I will try it next week

dave

[kolb13]

Entered parameter list today. Z and X axes worked ok ,the Y axis traveled the wrong way [toward the single dog]. Reversed the motor and tac wires so table traveled to the double dog . manual mode came up on screen which then allowed me to run rapid feeds and hand wheel. We had to change some of the limit switch parameters so axis would stop before losing reset. Works great.Only problem left is rapid feed on Z axis doesnt work. Probably the switch but i haven't looked into it yet. Any ideas?


thanks dave

[gus]

z doesn't rapid down manually

you must pull the collar out and push the button on the joystick to get it to rapid up

if it rapids in program run mode, it is the switch