Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario descargar pdf (Pagina 464)

100

101

Tool Control Functions

Chapter 13

13-2

The control can store up to 32 wheel length offsets for each axis. Your

system installer configures the actual number of available offsets on your

system in AMP. Each offset can select a different control point on the

wheel. Typically, each time you dress a different profile into the wheel,

you need to activate different length offsets.

Program a T word to select and activate a wheel length offset. You can

program a T word in any block in a part program.

Important: When you activate the miscellaneous function lock feature, the

control ignores M, B, S, and T words in the part program with the

exception of M00, M01, M02, M30, M98, and M99. You can activate this

miscellaneous function lock feature through the front panel screen (as

described on page 2-11) or by an optional switch installed by your system

installer.

The format for a T word is as follows:

Trrll;

Where: Is:

thedresser/wheelradius and orientation offsetnumber. The

radius/orientation offsetnumberis thefirsttwo digitsof theT word. See

chapter3 fordetailson radius/ori entationdata.

thewheel lengthoffset number. The wheel length offsetnumbermustbe the

lasttwo digitsof theT word. See chapter3 forinformation on wheel length

offsetvalues.

An offset number selected as zero (for either length or radius/orientation)

selects an offset value of zero and effectively cancels wheel length offsets

and dresser/wheel radius compensation. Dresser/wheel radius

compensation is not canceled when a radius offset number of zero is

programmed (G41 or G42 remain active). In t his case, the control uses a

radius value of zero. You must cancel dresser/wheel radius compensation

by programming a G40.

Important: T words are always right-justified. This means that

programming a two-digit T word only enters a wheel length offset value

and does not specify a radius/orientation offset number. Table 13.A gives

some example T words and the resulting offset numbers activated.

13.1.1

Selecting Wheel Length

Offsets (T Word)

1 2 ... 459 460 461 462 463 464 465 466 467 468 469 ... 819 820

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Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario Pagina 464

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