Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario descargar pdf (Pagina 313)

100

101

Introduction to Programming

Chapter 10

10-35

When you repeat the same series of blocks more than once, we recommend

that you program them using a subprogram.

This section explains the following:

1) Main and subprograms

2) Subprogram calls

Important: To make jumps, loops, or calculations within an executing

program or subprogram, use any of the paramacro features as described in

chapter 20.

Use P words in a subprogram call (M98) or paramacro call to designate the

specific program being called. The P address is followed by the program

name being called.

Use L words i n a subprogram call (M98) and some cycles to designate a

repeat count for a subprogram. The number following the L address

designates the number of times a subprogram is executed consecutively

before execution is returned to the main program.

For details on subprograms, see page 10-12.

The spindle function has two m odes:

Constant Surface Speed Mode (G96) maintains the speed of the part

surface relative to the grinding wheel surface at a constant rate. A

change in part or wheel diameter results in a change in spindle speed as

needed to maintain the surface speed programmed with a G96 S word.

Wheel diameter is only monitored if S axis is selected in AMP as the

CSS axis.

RPM Spindle Speed Mode (G97) maintains a constant spindle speed

equal to the programmed S word, making the actual surface speed

dependent on the working diameter.

Spindle speed and surface speed values are programmed by an S word

followed by as many as four digits. S words are modal and remain active

until another S word is executed.

Important: Your system installer sets a maximum speed for each gear

range in AMP. If you program an S word requesting a spindle speed that

exceeds this limit, the spindle speed is held at the AMP defined maximum.

A new value can be set for this maximum RPM by programming a G92

followed by an S word (see page 12-43).

10.5.9

P,L (MainProgramJumps

and Subprogram Calls)

10.5.10

S Word (Spindle Speed)

1 2 ... 308 309 310 311 312 313 314 315 316 317 318 ... 819 820

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Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario Pagina 313

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