Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 458)

Paramacro Parameters
Chapter 21
21-4
This subsection describes the T, S, B -- CODE MAY BE A MACRO CALL
parameter that is used for T--, S--, and B--code AMP-assigned paramacro
calls.
The paramacro program names that are called by a T--, S--, or B--words are:
T--word calls the paramacro program named 9000.
S--word calls the paramacro program named 9029.
B--word calls the paramacro program named 9028.
The value of a T--, S--, or B--word that calls a paramacro is determined by
the value assigned to a corresponding paramacro system parameter.
T word assigned using system parameter #149
S word assigned using system parameter #147
B word assigned using system parameter #146
Important: #149, #147, and #146 refer to paramacro system parameters.
These are not AMP parameters and are not set in AMP. Refer to your mill
or lathe programming and operation manuals for more information.
21.2
T- , S- , and B- code
Paramacro Calls