Here is the script for a tool change macro on a lathe with a rear mounted spindle "B axis" and the actual ATC unit is controlled from a PLC communicating through modbus Serial plugin and brains logic.
The trouble I'm having is that Mach3 needs to wait for the PLC to send that the tool change is complete and the input/bit is true. I have seen where other people have used SystemWaitFor() but I don't know how to get the syntax right.
I was using G4 P4 but when the rapids were slowed down the tool changer would start before it was at the tool change location.
Const maxtoolnum = 4
Dim newtoolNumber As Integer
Dim oldtoolNumber As Integer
Dim NewtoolDro As Integer
Dim XTCpos As Double
Dim ZTCpos As Double
Dim BTCpos As Double
Dim Input3 As Integer
XTCpos = GetoemDRO (1817)
ZTCpos = GetOemDRO (1819)
BTCpos = GetOemDRO (2017)
newtoolnumber = (getselectedtool)
If newtoolNumber > maxtoolnum Then
MsgBox "Tool number Range is 1-4 Check tool number "
Code "G53 G90 G40 G00 B" & BTCpos
Code "g53 g90 G40 G00 X" & XTCpos
Code "G53 G90 G40 G00 Z" & ZTCpos
'MsgBox ("newtool = " & GetSelectedTool)
'MsgBox ("oldtool = " & oldtool )
'MsgBox ("dro 2000 = " & getoemdro (2000) )