| abnormal stop |
An irregular means of halting a part program during the machining process. |
| addressed data |
Part program data consisting of alphanumeric CNC codes. Each code consists of a letter and number combination. |
| ALARM/MESGS |
The display key on the Haas control that shows the current alarms when pressed once and messages when pressed twice. |
| ALTER |
A key on the Haas control that replaces the item highlighted by the cursor with the text in the input buffer. |
| ASCII |
American Standard Code for Information Interchange. ASCII is a standard governing information exchange. |
| baud rate |
The number of changes per second to the media being transmitted. Also called the signaling rate, baud rate is measured by the number of signaling events per second. |
| binary digit |
Bit. The smallest unit of information on a computer. |
| byte |
Eight bits. |
| computer-aided manufacturing |
CAM. The use of computer software to aid in the design of manufacturing processes. |
| data bit |
In data transmission, a "1" or "0" that represents the most fundamental unit of information in a digital system. Bit is shorthand for "binary digit." |
| data rate |
The speed at which data is transmitted. Also called the bit rate, data rate is measured in bits per second (bps). |
| direct numerical control |
The direct control of CNC machines by a central host computer. With DNC, the program is run directly from the memory of a host computer and is not stored in the memory of the machine's own control. |
| dripmode |
The use of DNC on the Haas control in which the control executes one block at a time from the RS232 port. |
| EDIT |
An operation mode key that allows manual editing changes in a program or the creation of new program memory. |
| electronic transfer |
Any method of sending and receiving part programs on a CNC control involving either floppy disk, RS232, or direct numeral control. |
| ENABLE DNC FROM MDI |
Setting 55. A setting that controls DNC capability. |
| end-of-block |
A character that marks the end of a part program block. An end-of-block character is represented by a semicolon (;) in a part program. |
| F2 |
A key that tells the Haas control, while in LIST PROG mode, to save a particular program to a floppy disk. |
| F3 |
A key that tells the Haas control, while in LIST PROG mode, to call up a particular program stored on a floppy disk. |
| F4 |
A key used to select either Program Review or Background Edit in the MEM mode and PRGRM display of the Haas control. |
| floppy disk |
A 3.5 inch plastic device that stores programs and computer information magnetically. Standard removable floppy disks hold just over 1MB of data. |
| floppy disk drive |
A computer peripheral that reads magnetic data from a floppy disk. |
| G70 |
A Haas canned cycle used for finishing on the lathe. |
| G71 |
A Haas canned cycle used for roughing and OD or ID stock removal on the lathe. |
| G72 |
A Haas canned cycle used for roughing and stock removal of the part face on the lathe. |
| G73 |
A Haas canned cycle used for irregular-path stock removal on the lathe. |
| INSERT |
A key on the Haas control that inserts the text in the input buffer after the current cursor location. |
| LIST PROG |
An operation mode key that lists programs and allows an operator to select, send, receive, and delete programs. |
| M30 |
A miscellaneous code that signals a program end and rest. M30 is associated with Settings 2, 39, 56, and 83 on the Haas lathe control. |
| M98 |
A miscellaneous code that calls a subprogram during part program execution. |
| MEM |
An operation mode key that runs part programs from the control's memory. |
| MS-DOS |
Microsoft Disk Operating System. A computer operating system for personal computers, which has largely been replaced by the more common Windows operating system. |
| parity |
A simple error checking system used in serial communications. |
| part program |
A series of numerical instructions used by a CNC machine to perform the necessary sequence of operations to machine a specific workpiece. |
| PRGRM/CONVRS |
The display key on the Haas control that causes program blocks of the active part program to display on the screen. |
| RECV RS232 |
A key that initiates the reception of a part program from the RS232 serial port. |
| RESET |
A reset key that stops all machine motion and places the program cursor at the top of the current program. |
| RS232 |
A serial interface standard specified by the Electronic Industry Association for the interconnection of devices. The Haas control can send and receive part programs using RS232 standard connection cables. |
| SELECT PROG |
A key that activates a program in the LIST PROG operator mode on the Haas control. |
| SEND RS232 |
A key that initiates the transmission of a part program out the RS232 serial port. |
| SETNG/GRAPH |
The display key on the Haas control that lists settings when pressed once and presents dry run information when pressed twice. |
| Setting 55 |
ENABLE DNC FROM MDI. A setting that controls DNC capability. |
| start bit |
A bit indicating the beginning of a data stream or the start of a byte of data. |
| stop bit |
A bit indicating the end of a byte of data. |
| WRITE/ENTER |
A key on the Haas control that acts as a general enter key. |
| XMODEM |
An error-checking file transfer protocol that sends data in 128-byte blocks. |