Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 665)

Paramacros
Chapter 20
20-21
#3006
Program Stop With Message
Use this parameter to cause a cycle stop operation and display a message
on line 1 of the CRT. It is a write-only parameter. Any block that assigns
a new value to parameter #3006 results in a cycle stop. Any value can be
assigned to this parameter. The actual value is not used.
ATTENTION: Once axis reciprocation begins, it continues
until stopped by a G80, or an end of program (M02, M30,
M99). This means executing paramacro #3006 in a part
program does not necessarily stop the reciprocating axis.
When the control executes this block, a cycle stop is performed and the
message “SEE (MESSAGE) IN PART PROGRAM BLOCK” is displayed
on line 1 of the CRT. This is intended to point out to the operator that an
important comment is in a program block (see page 10-10 for details on
comment blocks).
For example, programming:
#3006=.1 (Install Wheel Number 6);
causes program execution to stop at the beginning of this block and the
message display to tell the operator to read the comment in the block.