Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set User Manual

Page 119

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Manual/MDI Operation Modes

Chapter 4

4-15

The input cursor is the cursor shown on the input lines (lines 2 and 3
on the screen). To move the cursor left and right in the input area,
press and hold the [SHIFT] key while pressing the left and right
cursor keys. The control inserts a new character to the left of the
cursor automatically when you press any character key.

If you make a mistake while keying in a character before it is sent
from the input area, you can edit that character by using the input
cursor described in chapter 2.

3.

Press the [TRANSMIT] key to transmit the blocks to control
memory. Once the blocks have been sent to control memory, you
cannot send any more MDI blocks until the control has finished
executing all of the previous set.

The control displays the first 4 blocks of the MDI program entered
on lines 17-20 with an ! (exclamation point) just to the left of the
blocks. If inserting lines using MDI within a program selected for
automatic execution, the control inserts the MDI blocks just before
the next block to be executed.

If you need to abort the MDI program due to an error in the MDI
program or any other reason, discard the MDI program by executing
a control reset operation (see chapter 2).

4.

Press the

<CYCLE START>

button to continuously execute the MDI

blocks in the AUTO or MDI modes. The single block, block retrace
and jog retract features are also available for MDI programs (see
chapter 7 for details on these features).

The control displays an “@” symbol next to any executed MDI blocks.

The error message:

“NO MORE MDI BLOCKS”

appears if you press cycle start in the MDI mode when there are no
more executable MDI blocks remaining in memory. If the MDI
blocks were entered into an executing part program, you must return
the control to automatic mode to continue executing the part
program. If you execute the MDI program in the MDI mode,
execution is halted when the control encounters the first block of the
part program.

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