| Class Vocabulary | |
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abnormal stop
| An irregular means of halting a part program during the machining process. |
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addressed data
| Part program data consisting of alphanumeric CNC codes. Each code consists of a letter and number combination. |
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ALARM/MESGS
| The display key on the Haas control that shows the current alarms when pressed once and messages when pressed twice. |
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ALTER
| A key on the Haas control that replaces the item highlighted by the cursor with the text in the input buffer. |
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ASCII
| American Standard Code for Information Interchange. ASCII is a standard governing information exchange. |
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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. |
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binary digit
| Bit. The smallest unit of information on a computer. |
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byte
| Eight bits. |
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computer-aided manufacturing
| CAM. The use of computer software to aid in the design of manufacturing processes. |
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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." |
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data rate
| The speed at which data is transmitted. Also called the bit rate, data rate is measured in bits per second (bps). |
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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. |
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dripmode
| The use of DNC on the Haas control in which the control executes one block at a time from the RS232 port. |
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EDIT
| An operation mode key that allows manual editing changes in a program or the creation of new program memory. |
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electronic transfer
| Any method of sending and receiving part programs on a CNC control involving either floppy disk, RS232, or direct numeral control. |
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ENABLE DNC FROM MDI
| Setting 55. A setting that controls DNC capability. |
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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. |
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F2
| A key that tells the Haas control, while in LIST PROG mode, to save a particular program to a floppy disk. |
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F3
| A key that tells the Haas control, while in LIST PROG mode, to call up a particular program stored on a floppy disk. |
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F4
| A key used to select either Program Review or Background Edit in the MEM mode and PRGRM display of the Haas control. |
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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. |
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floppy disk drive
| A computer peripheral that reads magnetic data from a floppy disk. |
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G70
| A Haas canned cycle used for finishing on the lathe. |
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G71
| A Haas canned cycle used for roughing and OD or ID stock removal on the lathe. |
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G72
| A Haas canned cycle used for roughing and stock removal of the part face on the lathe. |
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G73
| A Haas canned cycle used for irregular-path stock removal on the lathe. |
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INSERT
| A key on the Haas control that inserts the text in the input buffer after the current cursor location. |
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LIST PROG
| An operation mode key that lists programs and allows an operator to select, send, receive, and delete programs. |
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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. |
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M98
| A miscellaneous code that calls a subprogram during part program execution. |
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MEM
| An operation mode key that runs part programs from the control's memory. |
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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. |
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parity
| A simple error checking system used in serial communications. |
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part program
| A series of numerical instructions used by a CNC machine to perform the necessary sequence of operations to machine a specific workpiece. |
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PRGRM/CONVRS
| The display key on the Haas control that causes program blocks of the active part program to display on the screen. |
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RECV RS232
| A key that initiates the reception of a part program from the RS232 serial port. |
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RESET
| A reset key that stops all machine motion and places the program cursor at the top of the current program. |
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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. |
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SELECT PROG
| A key that activates a program in the LIST PROG operator mode on the Haas control. |
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SEND RS232
| A key that initiates the transmission of a part program out the RS232 serial port. |
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SETNG/GRAPH
| The display key on the Haas control that lists settings when pressed once and presents dry run information when pressed twice. |
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Setting 55
| ENABLE DNC FROM MDI. A setting that controls DNC capability. |
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start bit
| A bit indicating the beginning of a data stream or the start of a byte of data. |
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stop bit
| A bit indicating the end of a byte of data. |
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WRITE/ENTER
| A key on the Haas control that acts as a general enter key. |
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XMODEM
| An error-checking file transfer protocol that sends data in 128-byte blocks. |