SL-4 Post Question

[tsewyek]

In the proces of altering the mplfan post for an old Mori SL-4 w/6T control. On this particular machine the sign of X-axis is backwards, I've found a spot in the post to change the sign of the X, but I need to do something to correct the arc output. What have I not done? Thanks So Much in advance for all who reply, any assistance is greatly appreciated.

 

Walt

[Allan]

Simplest answer is to program from other side of centerline in Mastercam. Otherwise you need to change the dia_mult and the string select for the G02 and G03

 

Allan

[Roger Martin from CNC Software]

Being an “old” Mori I’d assume you don’t have to worry about ‘C’ axis.

 

In the MPLFAN.PST you can alter this postblock –

 

code:

---

psgcode         #Output the Gcode based on the current plane

#if c_ax_flp, !COMMENT OUT this line!

#[ !COMMENT OUT this line!

#Reverse arc direction for c_axis flip

if gcode$ = two | gcode$ = three,

[

sav_gcode = gcode$

gcode$ = (5 - gcode$) # Flip G02-G03

]

#] !COMMENT OUT this line!

 

if plane$ = zero, `sgcode

if plane$ = one, `sgcode1

if plane$ = two, `sgcode2

#if c_ax_flp, gcode$ = sav_gcode !COMMENT OUT this line!

gcode$ = sav_gcode !ADDED this line!

---

Do you also need to "flip" the sign on the 'I' on arcs?

[chris m]

actually; the 'easiest' way is to swap G02 and G03 here:

 

# --------------------------------------------------------------------------

# General G and M Code String select tables

# --------------------------------------------------------------------------

# Strings for switch based on planes, see psw_str_mult

sxg02 G03 #Circular interpolation CW

sxg03 G02 #Circular interpolation CCW

 

 

Hackety hack, but its worked here for 5 years

[tsewyek]

Thanks everyone, with your help I'm certain I'll be able to put this problem to bed today. Thanks again!!