Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 488)

Tool Offset Parameters
Chapter 22
22-16
Function
Use this parameter to determine the direction in which the tool magazine,
turret, or other tool changing device can be rotated. This parameter allows
for these direction options:
Plus only -- If this parameter is set as “Plus only,” it indicates that the tool
changer may be rotated only in the plus direction when indexing a tool.
Minus only -- If this parameter is set as “Minus only,” it indicates that the
tool changer may be rotated only in the minus direction when indexing
a tool.
Bi-directional -- If this parameter is set as bi-directional, it indicates that
the tool changer can be rotated in the plus and minus directions when
indexing a tool. If this is the case, the control selects the direction that
brings the programmed tool into position the fastest.
Axis Parameter Number
Single Process Process 1 Process 2
All [129] [20129] [21129]
Range
Selection Results
(a) Plus only
(b) Minus only
(c) Bi-directional
Notes
This is a global parameter; the value set here applies to all axes. For Dual
Processing controls, this is a per process parameter. The value set in the
parameters applies to all of the axes assigned to that process.
22.14
Tool Table Motion