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abnormal stop
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An irregular means of halting a part program during the machining process.
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addressed data
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Part program data consisting of alphanumeric CNC codes. Each code consists of a letter and number combination.
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ALARM/MESGS
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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
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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
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American Standard Code for Information Interchange. ASCII is a standard governing information exchange.
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baud rate
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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
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Bit. The smallest unit of information on a computer.
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byte
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Eight bits.
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computer-aided manufacturing
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CAM. The use of computer software to aid in the design of manufacturing processes.
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data bit
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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
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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
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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
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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
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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
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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
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Setting 55. A setting that controls DNC capability.
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end-of-block
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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
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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
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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
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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
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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
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A computer peripheral that reads magnetic data from a floppy disk.
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G70
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A Haas canned cycle used for finishing on the lathe.
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G71
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A Haas canned cycle used for roughing and OD or ID stock removal on the lathe.
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G72
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A Haas canned cycle used for roughing and stock removal of the part face on the lathe.
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G73
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A Haas canned cycle used for irregular-path stock removal on the lathe.
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INSERT
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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
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An operation mode key that lists programs and allows an operator to select, send, receive, and delete programs.
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M30
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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
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A miscellaneous code that calls a subprogram during part program execution.
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MEM
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An operation mode key that runs part programs from the control's memory.
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MS-DOS
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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
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A simple error checking system used in serial communications.
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part program
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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
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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
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A key that initiates the reception of a part program from the RS232 serial port.
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RESET
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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
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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
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A key that activates a program in the LIST PROG operator mode on the Haas control.
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SEND RS232
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A key that initiates the transmission of a part program out the RS232 serial port.
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SETNG/GRAPH
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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
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ENABLE DNC FROM MDI. A setting that controls DNC capability.
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start bit
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A bit indicating the beginning of a data stream or the start of a byte of data.
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stop bit
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A bit indicating the end of a byte of data.
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WRITE/ENTER
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A key on the Haas control that acts as a general enter key.
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XMODEM
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An error-checking file transfer protocol that sends data in 128-byte blocks.
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