Rockwell Automation 8520 9/Series CNC Lathe User Manual

Page 861

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Allen-Bradley 7300 Series CNC

Tape Compatibility

Appendix D

D-11

Executing 7300 Part Programs

The system installer has to write PAL program for the control to execute in

7300 tape compatibility mode. Refer to the PAL manual for details.

The control allows the Power-Turn-On mode (PTO) of the control to be

specified in AMP with respect to inch/metric (G70/G71) mode and

absolute/incremental (G90/G91) programming mode. For 7300 tape

compatibility, we recommend that you select G70 and G90 for PTO mode.

When 7300 tape compatibility mode is enabled, the following modal

conditions are automatically established and cannot be selected in AMP:

G36.1 Short block Acc/Dec enabled

G39.1 Tool Tip Radius Compensation Circular Transition

Important: When programming a G00 in 7300 mode, the 9/Series control

uses the <RAPID OVERRIDE> switch to override the rapid feedrate. This

applies to any programmed rapid move including moves generated by the

fixed cycles or pattern repeats. The operation of the <RAPID

OVERRIDE> switch is very PAL dependent, and can be alter by your

system installer’s PAL logic. See your system installer documentation for

details.

The part program can be executed from tape or control memory. If a 7300

program makes pattern calls, the patterns must reside in control memory.

The control attains compatible pattern repeat functionality by using an

M98 subprogram call. When the control executes the 7300 pattern repeat

call, it makes the following substitutes:

Control Uses:

To substitute 7300’s:

To Indicate:

M98

a pattern repeat is called.

Pnnnnn

name

the pattern blocks being called (part program name).

Lmmm

the number of times the pattern blocks get executed.

end of block.

Important: In order for the control to properly execute a M98 subprogram

call, the blocks called by the pattern repeat must be stored under a program

name starting with the letter O, followed by one through five numeric

characters. Refer to section 11.5.9 for information on valid file names.

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