Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 310)

Introduction to Programming
Chapter 10
10-36
Synchronization with Setup (M150-M199)
M150 - M199 — Synchronization with Setup
(dual-process system only)
This set of M-codes cancels any information already in block look
ahead and re-setup the blocks before process execution is resumed.
This re-setup is only essential when shared information is being changed
from one process to another, as in the case of the dual processing
paramacro parameters. See page 30-7.
Important: You cannot use these M-codes when TTRC is active.
Other more specific M-codes are described in later sections that deal
specifically with their functions.
Important: When you activate the MISCELLANEOUS FUNCTION
LOCK feature, the control displays M-, B-, S-, and T-words in the part
program with the exception of M00, M01, M02, M30, M98, M99 and
M100-M150. This feature is described in chapter 7.
The operation of other M--codes are given in detail in sections that
pertaining to their specific usage. Others, such as coolant and spindle
control should be in documentation prepared by the system installer.