Press the GRAPH key to display the graphics screen.
• CUSTOM1 and CUSTOM2 are keys reserved for the display of conversational macro or C Language Executor.
Cursor
The cursor shows a blinking dash on the display located below the position of a particular address while in one of the Edit modes. On many controls, the cursor highlights the whole word, for example, X7.777.
Cursor Move
In order to navigate through the program, four keys are used to move the cursor.
The right pointing arrow key moves the cursor to the right or in the forward direction. When this key is pressed, the cursor moves only one space each press of the button, in the forward direction. The left pointing arrow key moves the cursor to the left or in the reverse direction. As with the right arrow, when this key is pressed, the cursor moves only one space each press of the button, in the reverse direction.
Figure 2-19 Cursor Move Keys Courtesy FANUC FA America
The downward pointing arrow key moves the cursor downward through the program in the forward direction. Each time this key is pressed, the cursor moves downward one full line. The upward pointing arrow key moves the cursor upward through the program in the reverse direction. Each time this key is pressed, the cursor moves upward one full line.
Use the CURSOR button with the arrow pointing up to change pages in the opposite direction. For example:
O0001
N1 G50 X7.777 Z7.777 S1000
N2 T0100 M39
N3 G96 S600 M03
In this example, the CURSOR is resting below N. By pressing the CURSOR button three times with the right-pointing arrow, the cursor moves below the letter (address) G.
By pressing and holding the CURSOR button with the up arrow, the prompt will move to the first word of program O, which corresponds to the upper limit of cursor movement. Another fast way to return to the program head is to press the RESET key.
By pressing the CURSOR button once, with the arrow pointing down, the cursor will move down one line. If the cursor must be moved over a few or many words, you need not press the button repeatedly. Just press and hold this button down; the cursor automatically jumps one word at a time in the given direction.
Page Up/Down
Usually the length of the program exceeds what the height of the screen will display. The CURSOR move keys can be used to scroll through the program line-by-line. A more effective method to move a large amount is to use the two PAGE keys. Using these keys will advance in the direction selected by the number of lines the screen can display. The last block of a given page becomes the first block of the next page. The PAGE keys allow for scrolling through long programs more effectively.
Figure 2-20 Page Up/Down Keys Courtesy FANUC FA America
PC FUNCTION
This set of function keys are used for PC Functions.
ABC/abc
This key is used to switch from Caps-Lock (all capital letters) to lower case in the same manner as with PC functions.
Figure 2-21 PC Function Keys Courtesy FANUC FA America
Special
The Special Key allows selection of two keys simultaneously from within the NC Guide i software (PC version only). It is used for PC operations where pressing of multiple keys is required.
• Press the Special key.
• Press the required multiple keys in any order. The command will be executed upon final key entry.
Figure 2-22 ABC/abc Key Courtesy FANUC FA America
Figure 2-23 SPECIAL Key Courtesy FANUC FA America
OPERATIONS PERFORMED AT THE CNC CONTROL
The following explanations are for operations considered routine for users of CNC machine tools and are given in their sequence of use. Please note that these procedures are specific to the type of controller depicted here (Fanuc series 0i). The procedures for another type of control may be similar. Be sure to consult the manufacturer manuals specific to your machine tool operation and control panel.
The Machine is Turned On and Homed (Machine Zero)
Turn on the main power switch, and then press the ON Power button on the controller. Most modern machine tools will automatically start-up in the REF/ZERO RETURN mode. This means that before any automatic or manual operation may begin, you must Home the machine first.
If the LED above the REF button in the operation section of the Operator Panel is not lit, press it now to activate the mode.
Using the Axis/Direction keys, press the direction necessary to HOME the machine. Note that many machine tools will have LEDs for each axis that are lit to indicate when that axis is HOMED.
At machine start-up, a common screen displayed is ACTUAL POSITION (ABSOLUTE). If it is not displayed, press the function key labeled POS, then the soft-key ABSOLUTE. The displayed coordinate values represent the relationship between the Workpiece Zero and the Machine Zero (HOME). When the machine is HOME, press the soft-key OPRT, then ORIGIN, and then ALL AXIS to zero each of the coordinate axes.
By pressing the soft keys, you can activate other display screens. For instance, when you press the button ABSOLUTE (which corresponds to position), the digital counter appears on the screen for the X, Y and Z axes, which is the absolute coordinate system for a given workpiece (for turning centers, X and Z will be displayed). The position (POS) function is assigned four display screens and can be found by pressing the soft keys labeled ABSOLUTE, RELATIVE, ALL, and (OPRT). The first screen corresponds to a position change in the ABSOLUTE (ABS) system for X, Y, and Z, as illustrated in Figure 2-24. The second screen RELATIVE (REL) corresponds to position changes in the incremental system for milling machines X, Y, and Z (U and W for turning centers). The third, ALL, gives representation of all four of the displays simultaneously on one screen, as shown in Figure 2-25.
The values listed in the readout for MACHINE represent the distance from Machine Home position.
The DISTANCE TO GO readout is the most significant part of the third display. The coordinates in this quarter of the screen display correspond to the path that will be followed by the
