Command

Principal Function(s)

ADD
(ADDRESS)

Reads the IEEE-488 bus address setting of the Model 10BACI-488 to which the command is directed

ANO
(ANALOG OUTPUT)

Sets or reads the "data source" for a given analog output channel (or each such channel in a given range of channels) as a fixed millivolt value or a linear function of a specified data channel

ASL
(A SLOT)

Sets or reads the bit group assigned to the Model 10AIO-16 occupying a given A slot

ASN
(ASSIGN SATELLITE NUMBER)

Sets or reads the satellite number of the network "node" to which the command is directed, and determines the network role of that node ("host" or "satellite")

ATC
(ASSOCIATED TEXT COLOR)

Sets or reads the foreground/background color combination for the display of all "associated" fixed text when in "text editor" mode

ATT
(ATTACH)

"Attaches" a given B slot to the mainframe command source (keyboard or Computer Interface Port) from which the command originates.  Cancelled by the DETACH (DET) command.  "Read" form of the command returns the B slot currently "attached" to the mainframe command source from which the command originates.

BAU
(BAUD RATE)

Sets or reads protocols for the Computer Interface Port: baud rate (300 through 153.6K), number of data bits (7 or 8), number of stop bits (1 or 2), and parity (even, odd, or none)

BCD
(BINARY CODED DECIMAL)

Sets a given bit group (or each bit group in a given range of bit groups) to encode in BCD form either a specified decimal value or the current value of a specified data channel.  "Read" form of the command returns the decimal value currently represented by the BCD configuration of a specified bit group (or each bit group in a given range of bit groups), or the data channel assigned to that bit group.

BCP
(B CENTRAL PROCESSOR)

Informs all system Auxiliary Computer Interface Cards of the mainframe's Central Processor version.  "Read" form of the command returns the current "BCP" setting.

BDP
(BIT DESIGNATOR PAIR)

Defines or reads a pair of words (with corresponding foreground/background color combinations) to be used to display system logic bits (see also the BIT STATE DISPLAY (BSD) command)

BEE
(ZERO OFFSET)

Sets or reads the zero offset ("b" term) to be applied to the data reading of a given channel or of each channel in a given range of channels.  May also be used to reset the precision of a CALCULATE channel.

BIN
(BINARY)

Sets a given bit group (or each bit group in a given range of bit groups) to encode in BINARY form either a specified decimal value or the current value of a specified data channel.  "Read" form of the command returns the decimal value currently represented by the BINARY configuration of a specified bit group (or each bit group in a given range of bit groups), or the data channel assigned to that bit group.

BIT
(SET BIT)

Sets or reads the logic state of a given bit or of each bit in a given range of bits.  May also be used to return bit control to the logic "source" specified by the last-entered LOGIC SOURCE (SRC) command, and to turn on and off the mainframe's EEPROM Write Protect Switch.

BLS
(BLANK LINE SUPPRESS)

Suppresses printout of all unused lines at the bottom of any video page transmitted from the Model 10VFO132 Printer Interface Port in response to a PRINT PAGE (PRI) command

BSD
(BIT STATE DISPLAY)

Sets or reads the pair of words (with corresponding foreground/background color combinations) to be used to display a given logic bit or each bit in a given range of bits (see also the BIT DESIGNATOR PAIR (BDP) command)

BSL
(B SLOT)

Sets or reads the bit group assigned to the Model 10BIO-16 occupying a given B slot

BTS
(BITS)

Cancels NO BITS (NOB) command, to resume normal reading of system logic bits with each scan cycle.  May be used to re-enable system EXECUTE (EXU) functions.

BVS
(B VIDEO SIGNAL)

Sets the system for operation with the Model 10BVS90 Video Signal Card.  "Read" form of the command returns the current BVS setting

BYP
(BYPASS)

Initiates or cancels the "FIFO bypass" for all outputs from the Computer Interface Port.  Principally used to obtain quick responses to "read" commands received at the Model 10AFIFO's Computer Port which do not relate to the 10AFIFO itself (each such answer is transferred directly to the 10AFIFO's output buffer).  "Read" form of the command returns the current "FIFO bypass" status.

CAT
(CATALOG)

Transmits the VIDEO PAGE DIRECTORY from the Model 10VFO132 Printer Interface Port

CCH
(CONVERSION CHANNEL)

Sets a specified data channel as "data source" for a given CONVERSION channel.  "Read" form of the command returns the source channel currently assigned to a given CONVERSION channel

CDL
(CONDITIONAL)

Defines or reads the logical combination of system conditions that will set a given "conditional bit" to Logic 1, expressed as a Boolean string of up to 16 mnemonic terms and up to 15 operators.  Applies to "B-sized" mainframes only; see also the COMMAND (CMD) command.

CHN
(CHANNEL)

"Write" form of the command is normally used to load a given DOWNLOAD channel (or each DOWNLOAD channel in a given range of channels) with either a fixed data value or the current data reading of a specified channel; may also be applied to other "pseudochannel" types—e.g., to reset a scanned "MAX/MIN" CALCULATE channel).  Also used to set up a BINARY or BCD input channel, and to dedicate it to the reading of the BINARY or BCD configuration of a given bit group. 

"Read" form of the command transmits current data for a given channel or for each channel in a given range of channels.  For every channel, outputs x,w,z[OPT] from the Computer Interface Port, where x = optional channel number "echo," w = channel data value, z = optional limit-zone indicator number, and [OPT] = output terminator.

CHS
(CURRENT HALT STATUS)

Reads current "halt status" of a given Model 10BDR64 history recorder or of each recorder in a given range of recorders.  For each recorder, returns the number of frames recorded so far since occurrence of the predefined "halt" condition and the total "halt depth" of the recorder (see also the HALT (HLT) and HALT DEPTH (HDP) commands).

CLC
(CALCULATE)

Sets or reads the definition of a CALCULATE channel as a function of one or more other channels, with user-specified scaling and offset; click here for a complete list of CLC expressions.  "Read" form of the command can return definitions for each CALCULATE channel in a given range of channels.

CLK
(CLOCK)

Synchronizes scanning of data channels to the system time-of-day clock by pausing at the end of each scan until the clock registers its next tenth of a second.  "Read" form of the command returns the current CLK setting.

CLM
(COLUMNS)

Sets or reads the number of columns for all STREAM (STR) and HARD COPY (HCY) transmissions from the Computer Interface Port

CLQ
(CLEAR QUEUE)

Clears a "queue" of video pages yet to be transmitted from the Model 10VFO132 Printer Interface Port

CMD
(COMMAND)

Sets or reads the command(s) to be automatically executed when a given "conditional bit" goes "high" or "low."  "Read" form of the command can return the CMD command string for each conditional bit in a given range of conditional bits.  Applies to "B-sized" mainframes only; see also the CONDITIONAL (CDL) command.

CMT
(COMMAND TERMINATOR)

Sets or reads the single ASCII character to be recognized as the "command terminator" for all commands received via the Computer Interface Port or (if a Model 10AFIFO is present) by the FIFO Computer Port

COC
(COUNTER CLEAR)

Releases COUNTER RESET (COR) command, resuming normal updating (from zero) of a given Model 10ACT01 or Model 10ACC-4 COUNTER channel

COH
(COUNTER HOLD)

Inhibits updating of the scanned data reading of a given Model 10ACT01 or Model 10ACC-4 COUNTER channel

COLD BOOTV

Displays menu page with further instructions for selective "rebooting" of the video card set of a "B-sized" mainframe

COM
(COMMUNICATIONS)

Designates a given "10BACI"-supplied Auxiliary Computer Interface to be the system's DEFAULT COMMUNICATIONS PORT (DCP); reads the current DCP assignment.  Also used to return the main Computer Interface Port to the function of DCP.

CON
(CONFIGURE)

Sets a given channel to the configuration encoded by a specific ASCII string.  "Read" form of the command returns the current ASCII-encoded configuration of a given channel or of each channel in a given range of channels.

COR
(COUNTER RESET)

Sets and holds at zero the scanned data reading of a given Model 10ACT01 or Model 10ACC-4 COUNTER channel (unless the COUNTER HOLD (COH) command is in effect for that channel)

COU
(COUNTER Update)

Releases COUNTER HOLD (COH) command, updating the scanned data reading of a given Model 10ACT01 or Model 10ACC-4 COUNTER channel

CPC
(CHARACTERS PER CHANNEL)

Sets or reads the number of data-field spaces for all STREAM (STR) and HARD COPY (HCY) transmissions from the Computer Interface Port

CPL
(CHANNELS PER LINE)

Sets or reads the maximum number of channels to be included in each line of output issued by the Model 10VFO132 in response to a PRINT CHANNEL DATA (PRT) command

CSB
(COMPUTER STATUS BIT)

Sets or reads the system COMPUTER STATUS BIT, which will be at "Logic 1" only when the COMPUTER COMMAND QUEUE is empty

CSF
(CHECKSUM FIFO)

Stores the checksum value of the Model 10AFIFO's existing EEPROM contents and the checksum value of its existing RAM contents.  "Read" form of the command is used to determine whether various FIFO checksum tests have passed or failed.

DDI
(DESTRUCTIVE DATA INPUT)

Places the Model 10AFIFO in "cyclic" input mode, so that the FIFO main memory will continuously receive and store consecutive data records from the Computer Interface Port, rewriting over the oldest memory contents when it is full.  Requires "FIFO bypass" to be off.

DDO
(DESTRUCTIVE DATA OUTPUT)

Causes the Model 10AFIFO to output through the FIFO Computer Port the oldest data record in the FIFO main memory, one time only.  A copy of this data record is retained in the 10AFIFO's output buffer, the previous contents of which are destroyed (for retransmission of output-buffer contents, see the NONDESTRUCTIVE DATA OUTPUT (NDO) command).  Only effective when the 10AFIFO is in "GATED" OUTPUT MODE (see the TRANSMISSION DISABLE (XDS) command) and the "FIFO bypass" is off.

DEC
(DECREMENT)

Decreases by one count the current data value of a given DOWNLOAD channel or of each DOWNLOAD channel in a given range of channels.

DEL
(DELETE)

Deletes a specified video page format from EEPROM storage; requires special confirmation, and can only be entered through the keyboard

DET
(DETACH)

Cancels ATTACH (ATT) command, detaching the B card presently "attached" to the mainframe command source (keyboard or Computer Interface Port) from which the command originates

DFC
(DATA FIELD COLOR)

Sets or reads the foreground/background color combination for the display of all data fields when in "text editor" mode

DHT
(DEFAULT HEADER/TAILER)

Sets or reads the default "header" and "tailer" pages for Model 10VFO132 PRINT CHANNEL DATA (PRT) transmissions

DIR
(DIRECTORY)

Calls the VIDEO PAGE DIRECTORY to display

DIS
(DISPLAY)

Sets the mainframe for proper functioning of its 2-line LCD or 8-line VFD display and for proper keyboard communications.  Applies to all "A-sized" mainframes with local or remote display.

DIT
(DISPLAY TEST)

Writes an ASCII character string to the VFD display, then turns ON all display pixels, then turns all pixels OFF.  Applies to Model 10K2D and Model 10K4T-DA Mainframes only.

DLB
(DOWNLOAD BITS)

When applied to the network host, causes the Model 10BD4 Satellite Interface Card to download a given "global" bit group (or a continuous range of "global" bit groups) to each "A-sized" satellite in the network that has been set to "hear" these bits, with each 10BD4 scan cycle.  "Read" form of the command returns the global bit group(s) to be downloaded with each scan cycle.

DLC
(DOWNLOAD CHANNELS)

When applied to the network host, causes the Model 10BD4 Satellite Interface Card to download a given "global" data channel (or a continuous range of "global" data channels) to each "A-sized" satellite in the network that has been set to "hear" these channels, with each 10BD4 scan cycle.  "Read" form of the command returns the global data channel(s) to be downloaded with each scan cycle.

DLY
(DELAY)

Sets or reads the time delay (in milliseconds) between successive channel data transmission from the Computer Interface Port in response to a DUMP (DMP), STREAM (STR), HARD COPY (HCY), SNAPSHOT (SNP), or LIMIT ZONE (LZN) command

DMP
(DUMP)

Transmits current data once only for all scanned channels (including Chns. 998 (TIME) and 999 (DATE)) or for a continuous range of channels.  For every channel, outputs x,w,z[OPT] from the Computer Interface Port, where x = optional channel number "echo," w = channel data value, z = optional limit-zone indicator number, and [OPT] = output terminator.

DPT
(DEPTH)

Sets or reads the "depth" of a given Model 10BDR64 history recorder or of each recorder in a given range of recorders

DSB
(DUMP SYSTEM BIT DATA)

Transmits in BINARY format all data for a continuous range of bit groups.  For each bit group, outputs two bytes, followed by a modulo-256 checksum byte.  Applies only to "A-sized" mainframes and Auxiliary Computer Interface Cards.

DSD
(DUMP SYSTEM DATA)

Transmits in "2's complement" BINARY format all data for a continuous range of channels.  For each channel, outputs two bytes, followed by a modulo-256 checksum byte or byte pair.  Applies only to "A-sized" mainframes and Auxiliary Computer Interface Cards.

DSF
(DUMP SYSTEM FIELD DATA)

Transmits in "2's complement" BINARY format all data for a continuous range of channels—along with the respective limit status and decimal-point location for each data value.  For each channel, outputs four bytes, followed by a modulo-256 checksum byte.  Applies only to "A-sized" mainframes and Auxiliary Computer Interface Cards.

DSM
(DUMP SYSTEM MESSAGE DATA)

Transmits in BINARY (ASCII-CODED) format any pending System 10 "message"—including responses to valid mnemonic commands—terminated by the current "OPT" (OUTPUT TERMINATOR).  If no message is pending, a null string will be issued.  Applies only to "A-sized" mainframes and Auxiliary Computer Interface Cards.

DTE
(DATE)

Sets or reads the system internal date

ECO
(ECHO)

Enables channel-number "echo" for all transmissions from the Computer Interface Port in response to a CHANNEL (CHN), DUMP (DMP), or SNAPSHOT (SNP) command; automatically in effect for all STREAM (STR) and HARD COPY (HCY) transmissions.  Cancelled by NO CHANNEL (NCH) command.

EID
(EXTERNAL INPUT DISABLE)

Disconnects from the Model 10ACT01 that uses a specified data channel all external signals and logic commands received at its rear I/O connector.  Cancelled by EXTERNAL INPUT ENABLE (EIE) command.

EIE
(EXTERNAL INPUT ENABLE)

Cancels EXTERNAL INPUT DISABLE (EID) command, reconnecting all external signals and logic commands received by the Model 10ACT01 that uses a specified data channel

EMM
(SCALING FACTOR)

Sets or reads the scaling factor ("m" coefficient) to be applied to the data reading of a given channel or of each channel in a given range of channels.  May be used to reset the precision of an analog input channel.

EMP
(EMPTY)

Outputs from the Computer Interface Port either all frames or a selected number of frames of a given Model 10BDR64 history recorder, in sequence, that have been recorded since the EMP command was last applied to that recorder

EOI
(END OR IDENTIFY)

Causes an invocation of the END OR IDENTIFY (EOI) function after the last byte of the "output terminator" (OPT) and/or "end-of-transmission terminator" (EOT) for all transmissions from the Model 10BACI-488 to which the command is directed.  "Read" form of the command returns the current EOI settings for this 10BACI-488.

EOL
(END OF LINE)

Sets or reads the printer control character(s) to be transmitted at the end of each line of output issued from the Model 10VFO132 Printer Interface Port in response to a PRINT PAGE (PRI) or PRINT CHANNEL DATA (PRT) command

EOP
(END OF LINE)

Sets or reads the printer control character(s) to be transmitted at the end of each page of output issued from the Model 10VFO132 Printer Interface Port in response to a PRINT PAGE (PRI) or PRINT CHANNEL DATA (PRT) command

EOT
(END-OF-
TRANSMISSION TERMINATOR)

Sets or reads the string of up to four ASCII characters to be used as the "end-of-transmission terminator" for all outputs from the Computer Interface Port or (if a Model 10AFIFO is present) from the FIFO Computer Port—if this string is to be different from the current "output terminator" (see the OPT command)

ESC
(ESCAPE)

Halts any transmission from the Computer Interface Port; clears any partial command that may have been previously entered.  May be entered by pressing the keyboard's Esc key, or by transmitting the [ESC] character to the system via the Computer Interface Port.

EXM
(EXECUTE MODE)

Enables or disables "EXECUTE" powerup delay (when the delay is enabled, triggering of system EXECUTE (EXU) sequences will not occur during the first 15 seconds after powerup).  "Read" form of the command returns the current "execute mode" (disabled or enabled).  Only applies to certain mainframe firmware versions.

EXU
(EXECUTE)

Sets or reads the command(s) to be automatically executed when a given system logic bit goes "high" or "low."  "Read" form of the command can return the EXU command string for each bit in a given range of bits

FCH
(FRAME CHANNELS)

When directed to a Model 10BACIA, Model 10BACI-422, or Model 10BACI-488, sets or reads the continuous range of data channels to be loaded into that card's output buffer at the dn of every complete scan cycle, thus allowing a time-coherent "frame" of data

FCL
(FIFO CLEAR)

Clears the Model 10AFIFO memory, using a physical overwrite technique to destroy all stored contents, which cannot be reaccessed via the REACCESS FIFO MEMORY (RFM) command

FDM
(FLOATING POINT DUMP)

Instructs a Model 10BACI-488 equipped with the FLOATING POINT OPTION to output data for either all scanned channels or a continuous range of channels once only and in the floating-point format specified by the last-entered FLOATING POINT FORMAT (FPF) command

FIL
(FILTER)

Sets or reads the digital smoothing constant for a given analog input channel or for each analog input channel in a given range of channels; the constant is an integer from -1 through 9 (-1 = no filtering; 0 = only enough filtering to mask intrinsic system noise; 9 = maximum filtering) 

FPF
(FLOATING POINT FORMAT)

Sets or reads the format (IEEE or DEC) for the floating-point output of a Model 10BACI-488 equipped with the FLOATING POINT OPTION (see also the FLOATING POINT DUMP (FDM) command)

FRC
(FORCE)

Sets the scaling factor ("m" coefficient) for a given analog input channel—or for each analog input channel in a given range of channels—so that the existing channel input yields a specified reading.  Also sets desired precision (decimal-point location) for the channel(s).  "Read" form of the command returns an internal scaling number for a given analog input channel or each analog input channel in a range of channels.

FRQ
(FREQUENCY CALIBRATION)

Sets an appropriate scaling factor for a given Frequency Input Channel (or for each frequency input channel in a given range of channels) based on the nominal full-scale rating of the frequency source (or the highest frequency expected to be measured) and the corresponding value of the measured phenomenon, expressed in the desired engineering units and precision.  "Read" form of the command returns current FRQ calibration constants for the frequency input channel(s).

FRZ
(FREEZE)

Sets an unchanging ("frozen") search frame for every "non-statistical" PLAYBACK channel assigned to a given Model 10BDR64 history recorder (or to each recorder in a given range of recorders), on the basis of a specified search-depth offset; also specifies an increment for further keyboard-controlled alteration of the search depth (see also the ZOOM (ZUM) command).  "Read" form of the command returns the current search-depth offset and depth increment for a recorder or range of recorders.

GBL
(GLOBAL)

When issued to a satellite network node, disables or re-enables the transmission from that node of any and all "implicitly addressed" commands entered at that node via keyboard, Computer Interface Port, or Auxiliary Computer Interface Port.  When GBL = OFF, every command entered at that node is treated strictly as a "local" command.  Also reads the current GBL status of the interrogated node.

HCL
(HISTORY CLEAR)

Clears the "history memory" of a given Model 10BDR64 history recorder or of each recorder in a given range of recorders.  For "true erasure" of history memory, see the NONVOLATILE HISTORY (NVH) command.

HCY
(HARD COPY)

Transmits current data once only for a given channel, for each channel in a given range of channels, or for all scanned channels (including Chns. 998 (TIME) and 999 (DATE)).  For every channel, outputs x,w,z[OPT] from the Computer Interface Port, where x = channel number "echo," w = channel data value, z = optional limit-zone indicator number, and [OPT] = output terminator.  HCY output also includes user-specified HEADER and/or TAILER (see HEADER (HDR) and TAILER (TLR) commands).

HDP
(HALT DEPTH)

Sets or reads the "halt depth" for a given Model 10BDR64 history recorder or of each recorder in a given range of recorders (a recorder's halt depth is the number of rames that will be recorded following occurrence of a halt-triggering condition)

HDR
(HEADER)

Sets or reads an ASCII string of up to 80 characters to be transmitted at the beginning of each data set transmitted from the Computer Interface Port in response to a STREAM (STR) or HARD COPY (HCY) command

HDU
(HISTORY DUMP)

Transmits from the Computer Interface Port a given frame (or each frame in a given range of frames) from a specified Model 10BDR64 history recorder.  Output format is determined by the OUTPUT IMAGE (IMA) command.

HEX
(HEXADECIMAL)

Sets a given bit group (or each bit group in a given range of bit groups) to represent a specified four-character HEXADECIMAL word.  "Read" form of the command returns the HEXADECIMAL word currently represented by the existing configuration of a specified bit group (or each bit group in a given range of bit groups).

HIL
(HIGH LIMIT)

Sets or reads the HIGH limit value for a given channel or for each channel in a given range of channels; it can be a fixed value or equal to the "live" reading of a specified channel

HLT
(HALT)

Sets or reads the logical combination of conditions that will cause a given Model 10BDR64 history recorder to halt the recording of data, expressed as a Boolean string of up to 16 mnemonic terms and up to 15 operators

ICD
(INTERCHARACTER DELAY)

Sets or reads the time delay between successive characgter transmissions from the Model 10VFO132 Printer Interface Port

IMA
(OUTPUT IMAGE)

Sets or reads the variables (frame number, serial number, time, date, etc.) to appear in each line of output for a given Model 10BDR64 history recorder, and the order in which they are to be transmitted

INC
(INCREMENT)

Increases by one count the current data value of a given DOWNLOAD channel or of each DOWNLOAD channel in a given range of channels.  May also be used to increment a single COUNTER channel (only) of a Model 10ACT01 or Model 10ACC-4

ITR
(COMPUTER INTERRUPT)

"Write" form of the command sets the string of up to 32 ASCII characters to be transmitted from the Computer Interface Port (only) upon receipt of the "read" form of the command

KEY

Sets or reads the three-letter command mnemonic to be issued by the mainframe's front-panel keypad (if present) when a given numeral key from 0 through 4 is pressed, after the Function key is pressed

LBT
("BETWEEN" LOGIC)

Sets or reads the logic bit to be at "Logic 1" when data for a given channel (or for any channel in a given range of channels) is in that channel's SAFETY (NO VIOLATION) limit zone

LCT
(LOCATE)

Sets or reads the "location" assignment for a given system ANALOG I/O channel (or for each such channel in a given range of channels).  May also be used to "locate" a VOLATILE DOWNLOAD channel to an Auxiliary Computer Interface Card or a GLOBAL DATA CHANNEL to a Model 10BD1 Satellite Slave Card

LEG
(LEGEND)

Sets or reads the 4-character unit legend to appear with every display of a given channel (or of every channel in a given range of channels) on the mainframe's VFD display

LGO
(LOGO)

Sets or reads the string of characters to be displayed in the mainframe's display "billboard" line whenever the "billboard" is not called upon to display other material

LGT
("GREATER THAN" LOGIC)

Sets or reads the logic bit to be at "Logic 1" when data for a given channel (or for any channel in a given range of channels) is in that channel's "GREATER THAN" limit zone

LIM
(LIMITS)

Includes the limit-zone indicator number for every channel in all CHANNEL (CHN), DUMP (DMP), HARD COPY (HCY), STREAM (STR), and SNAPSHOT (SNP) transmissions from the Computer Interface Port.  Cancelled by NO LIMITS (NOL) command.

LIN
(LINEARIZE)

Sets or reads the prestored linearization table to be applied to a given analog input channel.  May also be used to set up a LINEARIZATION channel.

LLT
("LESS THAN" LOGIC)

Sets or reads the logic bit to be at "Logic 1" when data for a given channel (or for any channel in a given range of channels) is in that channel's "LESS THAN" limit zone

LNE
(LINE)

"Write" form of the command changes the current format (height/width, color, fixed text, data fields, etc.) of a specified line of the video page on display.  "Read" form of the command transmits from the Computer Interface Port the format of a specified line of the video page on display (unless the line contains one or more bargraph fields).

LOK
(LOCK)

Inhibits automatic updating of the system DATA RAM, instantly "locking" all scanned channels, one given channel, or each channel in a given range of channels.  Cancelled by UNLOCK (UNL) command.

LOL
(LOW LIMIT)

Sets or reads the LOW limit value for a given channel or for each channel in a given range of channels; it can be a fixed value or equal to the "live" reading of a specified channel.

LST
(LIST)

Sets or reads the "list" of variables for a given Model 10BDR64 history recorder.  The "list" expression can include channels and channel ranges, bit groups and bit-group ranges, and (optional) date.  Also clears the specified recorder and all higher-numbered recorders.

LZN
(LIMIT ZONE)

When entered through the Computer Interface Port, transmits from that port a number indicating the limit zone in which the data for a given channel (or for each channel in a given range of channels) currently lies.  When entered through the keyboard, displays the limit status (only).

MEM
(MEMORY)

Returns a hexadecimal number representing the total number of scaled data readings the history "system" is capable of storing; the answer also indicates whether the history memory is currently volatile or nonvolatile

MES
(MESSAGE)

Sets or reads the alphanumeric text string to appear in the displayed field of a given system "message."  Also specifies the visual effects for that display.

MOD
(MODE)

Reads current "input" and "output" modes for the Model 10AFIFO (see the DDI, NDI, XEN, and XDS commands)

MTC
(MASTER TIMING CLOCK)

Starts or stops synchronization of the system time-of-day clock to the externally sourced timing pulse received from the single Model 10BACI-422 to which the command is directed.  Requires CLK=ON command to be in effect, and power to be cycled.  "Read" form of the command returns current MTC status.

MVV
(MILLIVOLT/VOLT CALIBRATION)

Sets an appropriate scaling factor for a given Strain Gage Input Channel (or for each strain gage input channel in a given range of channels) based on the transducer sensitivity rating in mV/V, full scale, and the nominal full-scale rating of the transducer expressed in the desired engineering units and precision.  "Read" form of the command returns current MVV calibration constants for the strain gage input channel(s).

NCH
(NO CHANNEL)

Cancels ECHO (ECO) command, removing channel-number "echo" for all transmissions from the Computer Interface Port in response to a CHANNEL (CHN), DUMP (DMP), or SNAPSHOT (SNP) command

NDI
(NONDESTRUCTIVE DATA INPUT)

Places the Model 10AFIFO in "FILL" INPUT MODE, so that the FIFO main memory will receive and store consecutive data records from the Computer Interface Port until the memory is full, after which it will receive and store a data record only when the required memory space becomes available.  Requires "FIFO bypass" to be off.

NDO
(NONDESTRUCTIVE DATA OUTPUT)

Causes the Model 10AFIFO to output through the FIFO Computer Port the data record currently in the 10AFIFO's output buffer, one time only (this data record is retained in the output buffer, and may be retransmitted by subsequent applications of the NDO command).  Only effective when the 10AFIFO is in "GATED" OUTPUT MODE (see the TRANSMISSION DISABLE (XDS) command) and the "FIFO bypass" is off.

NOB
(NO BITS)

Disables the reading of system logic bits with each scan cycle; cancelled by BITS (BTS) command.  May be used to disable system EXECUTE (EXU) functions.

NOD
(NODE)

Routes a single standard mnemonic command of up to 80 ASCII characters to a given network node (host or satellite), one time only.  Requires OPN=LOC command to be in effect at the node where the NOD command is entered.

NOL
(NO LIMITS)

Cancels LIMITS (LIM) command, removing channel limit-zone indication for all transmissions from the Computer Interface Port in response to a CHANNEL (CHN), DUMP (DMP), HARD COPY (HCY), STREAM (STR), or SNAPSHOT (SNP) command

NVH
(NONVOLATILE HISTORY)

Activates the system's optional nonvolatile history memory, physically erasing all current memory and making inaccessible for storage of subsequent recordings the original 32K readings of the Model 10BDR64 card

OPN
(OPEN)

"Opens" an "explicit" command route between the network node to which the command is applied and one (only) other specified network node (host or satellite).  May also be used to return to "local" operation the node command source through which the OPN command is entered, thus canceling the "explicit" routing of commands from that node to another node.  "Read" form of the command returns the number of the node currently "open" to the local command source, or "LOC," if no node is "open" to the source node.

OPT
(OUTPUT TERMINATOR)