Summary
NEC MT Series1 projector control spec covering serial (RS-232C) and TCP/IP (wired/wireless LAN) interfaces. Binary command protocol with hex-encoded byte sequences and checksum validation. Supports power control, input switching, picture/audio/onscreen mute, lens control, volume adjustment, eco mode, edge blending, PIP/PbP, and extensive status queries.
Transport
protocols:
- tcp
- serial
addressing:
port: 7142
serial:
baud_rate: 115200
data_bits: 8
parity: none
stop_bits: 1
flow_control: null # UNRESOLVED: flow control not stated in source
auth:
type: none # inferred: no auth procedure in source
Traits
traits:
- powerable # inferred from POWER ON / POWER OFF commands
- routable # inferred from INPUT SW CHANGE command
- queryable # inferred from extensive REQUEST commands
- levelable # inferred from VOLUME ADJUST / PICTURE ADJUST commands
Actions
actions:
- id: power_on
label: Power On
kind: action
command: "02h 00h 00h 00h 00h 02h"
description: "Turns on the projector. No other commands accepted during power-on sequence."
params: []
- id: power_off
label: Power Off
kind: action
command: "02h 01h 00h 00h 00h 03h"
description: "Turns off the projector. No other commands accepted during cooldown."
params: []
- id: input_switch
label: Input Switch Change
kind: action
command: "02h 03h 00h 00h 02h 01h <DATA01> <CKS>"
description: "Switches the input terminal or entry list."
params:
- name: input_terminal
type: integer
description: "Input terminal byte value (e.g. 06h = video port). See Appendix for full mapping."
# UNRESOLVED: full input terminal mapping in Appendix not included
- id: picture_mute_on
label: Picture Mute On
kind: action
command: "02h 10h 00h 00h 00h 12h"
description: "Turns picture mute on. Auto-off on input/signal switch."
params: []
- id: picture_mute_off
label: Picture Mute Off
kind: action
command: "02h 11h 00h 00h 00h 13h"
description: "Turns picture mute off."
params: []
- id: sound_mute_on
label: Sound Mute On
kind: action
command: "02h 12h 00h 00h 00h 14h"
description: "Turns sound mute on. Auto-off on input/signal/volume change."
params: []
- id: sound_mute_off
label: Sound Mute Off
kind: action
command: "02h 13h 00h 00h 00h 15h"
description: "Turns sound mute off."
params: []
- id: onscreen_mute_on
label: Onscreen Mute On
kind: action
command: "02h 14h 00h 00h 00h 16h"
description: "Turns onscreen mute on. Auto-off on input/signal switch."
params: []
- id: onscreen_mute_off
label: Onscreen Mute Off
kind: action
command: "02h 15h 00h 00h 00h 17h"
description: "Turns onscreen mute off."
params: []
- id: picture_adjust
label: Picture Adjust
kind: action
command: "03h 10h 00h 00h 05h <DATA01> FFh <DATA02> <DATA03> <DATA04> <CKS>"
description: "Adjusts picture parameters (brightness, contrast, color, hue, sharpness)."
params:
- name: target
type: integer
description: "00h=Brightness, 01h=Contrast, 02h=Color, 03h=Hue, 04h=Sharpness"
- name: mode
type: integer
description: "00h=Absolute value, 01h=Relative value"
- name: value
type: integer
description: "16-bit adjustment value (low byte, high byte). Supports negative (two's complement)."
- id: volume_adjust
label: Volume Adjust
kind: action
command: "03h 10h 00h 00h 05h 05h 00h <DATA01> <DATA02> <DATA03> <CKS>"
description: "Adjusts sound volume."
params:
- name: mode
type: integer
description: "00h=Absolute value, 01h=Relative value"
- name: value
type: integer
description: "16-bit adjustment value (low byte, high byte)."
- id: aspect_adjust
label: Aspect Adjust
kind: action
command: "03h 10h 00h 00h 05h 18h 00h 00h <DATA01> 00h <CKS>"
description: "Adjusts the aspect ratio."
params:
- name: aspect_value
type: integer
description: "Aspect value byte. Mapping deferred to Appendix."
- id: lamp_adjust
label: Lamp / Light Adjust
kind: action
command: "03h 10h 00h 00h 05h 96h FFh <DATA03> <DATA04> <DATA05> <CKS>"
description: "Adjusts lamp/light output."
params:
- name: mode
type: integer
description: "00h=Absolute value, 01h=Relative value"
- name: value
type: integer
description: "16-bit adjustment value (low byte, high byte)."
- id: remote_key_code
label: Remote Key Code
kind: action
command: "02h 0Fh 00h 00h 02h <DATA01> <DATA02> <CKS>"
description: "Sends a remote control key code (WORD type)."
params:
- name: key_code
type: integer
description: "16-bit key code. Examples: 02h 00h=POWER ON, 03h 00h=POWER OFF, 05h 00h=AUTO, 06h 00h=MENU, 07h 00h=UP, 08h 00h=DOWN, 09h 00h=RIGHT, 0Ah 00h=LEFT, 0Bh 00h=ENTER, 0Ch 00h=EXIT, 13h 00h=MUTE, 84h 00h=VOLUME UP, 85h 00h=VOLUME DOWN, 8Ah 00h=FREEZE, A3h 00h=ASPECT, D7h 00h=SOURCE, EEh 00h=LAMP MODE/ECO"
- id: shutter_close
label: Shutter Close
kind: action
command: "02h 16h 00h 00h 00h 18h"
description: "Closes the lens shutter."
params: []
- id: shutter_open
label: Shutter Open
kind: action
command: "02h 17h 00h 00h 00h 19h"
description: "Opens the lens shutter."
params: []
- id: lens_control
label: Lens Control
kind: action
command: "02h 18h 00h 00h 02h <DATA01> <DATA02> <CKS>"
description: "Adjusts lens position (periphery focus). Timed or continuous drive modes."
params:
- name: target
type: integer
description: "06h=Periphery Focus"
- name: drive
type: integer
description: "00h=Stop, 01h=+1s, 02h=+0.5s, 03h=+0.25s, 7Fh=+continuous, 81h=-continuous, FDh=-0.25s, FEh=-0.5s, FFh=-1s"
- id: lens_control_2
label: Lens Control 2
kind: action
command: "02h 1Dh 00h 00h 04h <DATA01> <DATA02> <DATA03> <DATA04> <CKS>"
description: "Adjusts lens position with absolute or relative values."
params:
- name: target
type: integer
description: "FFh=Stop (no further params referenced); otherwise lens axis identifier."
- name: mode
type: integer
description: "00h=Absolute, 02h=Relative"
- name: value
type: integer
description: "16-bit adjustment value (low byte, high byte)."
- id: lens_memory_control
label: Lens Memory Control
kind: action
command: "02h 1Eh 00h 00h 01h <DATA01> <CKS>"
description: "Controls lens memory (MOVE, STORE, RESET)."
params:
- name: operation
type: integer
description: "00h=MOVE, 01h=STORE, 02h=RESET"
- id: reference_lens_memory_control
label: Reference Lens Memory Control
kind: action
command: "02h 1Fh 00h 00h 01h <DATA01> <CKS>"
description: "Controls the reference lens memory for the active profile."
params:
- name: operation
type: integer
description: "00h=MOVE, 01h=STORE, 02h=RESET"
- id: lens_memory_option_set
label: Lens Memory Option Set
kind: action
command: "02h 21h 00h 00h 02h <DATA01> <DATA02> <CKS>"
description: "Sets lens memory options."
params:
- name: option
type: integer
description: "00h=LOAD BY SIGNAL, 01h=FORCED MUTE"
- name: value
type: integer
description: "00h=OFF, 01h=ON"
- id: lens_profile_set
label: Lens Profile Set
kind: action
command: "02h 27h 00h 00h 01h <DATA01> <CKS>"
description: "Selects the reference lens memory profile."
params:
- name: profile
type: integer
description: "00h=Profile 1, 01h=Profile 2"
- id: freeze_control
label: Freeze Control
kind: action
command: "01h 98h 00h 00h 01h <DATA01> <CKS>"
description: "Toggles freeze function."
params:
- name: state
type: integer
description: "01h=On, 02h=Off"
- id: eco_mode_set
label: Eco Mode Set
kind: action
command: "03h B1h 00h 00h 02h 07h <DATA01> <CKS>"
description: "Sets eco/lamp/light mode."
params:
- name: mode_value
type: integer
description: "Eco mode value. Mapping deferred to Appendix."
- id: projector_name_set
label: LAN Projector Name Set
kind: action
command: "03h B1h 00h 00h 12h 2Ch <DATA01>-<DATA16> 00h <CKS>"
description: "Sets the projector name (up to 16 bytes)."
params:
- name: name
type: string
description: "Projector name string, up to 16 bytes, NUL-terminated."
- id: pip_pbp_set
label: PIP/Picture by Picture Set
kind: action
command: "03h B1h 00h 00h 03h C5h <DATA01> <DATA02> <CKS>"
description: "Sets PIP or Picture-by-Picture mode."
params:
- name: parameter
type: integer
description: "00h=MODE, 01h=START POSITION, 02h=SUB INPUT/SUB INPUT 1, 09h=SUB INPUT 2, 0Ah=SUB INPUT 3"
- name: value
type: integer
description: "For MODE: 00h=PIP, 01h=PbP. For START POSITION: 00h=TOP-LEFT, 01h=TOP-RIGHT, 02h=BOTTOM-LEFT, 03h=BOTTOM-RIGHT. Sub input values deferred to Appendix."
- id: edge_blending_set
label: Edge Blending Mode Set
kind: action
command: "03h B1h 00h 00h 03h DFh 00h <DATA01> <CKS>"
description: "Sets edge blending on or off."
params:
- name: state
type: integer
description: "00h=OFF, 01h=ON"
- id: audio_select_set
label: Audio Select Set
kind: action
command: "03h C9h 00h 00h 03h 09h <DATA01> <DATA02> <CKS>"
description: "Sets audio input source for a given input terminal."
params:
- name: input_terminal
type: integer
description: "Input terminal byte. Mapping deferred to Appendix."
- name: setting
type: integer
description: "00h=Same terminal as DATA01, 01h=BNC, 02h=COMPUTER"
- id: error_status_request
label: Error Status Request
kind: query
command: "00h 88h 00h 00h 00h 88h"
description: "Gets information about errors occurring in the projector."
params: []
- id: information_request
label: Information Request
kind: query
command: "03h 8Ah 00h 00h 00h 8Dh"
description: "Gets projector name, lamp usage time, and filter usage time."
params: []
- id: filter_usage_information_request
label: Filter Usage Information Request
kind: query
command: "03h 95h 00h 00h 00h 98h"
description: "Gets filter usage time and filter alarm start time in seconds."
params: []
- id: lamp_information_request
label: Lamp Information Request
kind: query
command: "03h 96h 00h 00h 02h <DATA01> <DATA02> <CKS>"
description: "Gets lamp usage time or remaining life for the specified lamp."
params:
- name: lamp
type: integer
description: "00h=Lamp 1, 01h=Lamp 2 (effective only for two-lamp models)"
- name: content
type: integer
description: "01h=Lamp usage time (seconds), 04h=Lamp remaining life (%)"
- id: carbon_savings_information_request
label: Carbon Savings Information Request
kind: query
command: "03h 9Ah 00h 00h 01h <DATA01> <CKS>"
description: "Gets total or operational carbon savings in kg and mg."
params:
- name: type
type: integer
description: "00h=Total Carbon Savings, 01h=Carbon Savings during operation"
- id: lens_control_request
label: Lens Control Request
kind: query
command: "02h 1Ch 00h 00h 02h <DATA01> 00h <CKS>"
description: "Gets adjusted values of the lens position for a given axis."
params:
- name: target
type: integer
description: "UNRESOLVED: axis enumeration not explicitly listed in source for request command"
- id: lens_memory_option_request
label: Lens Memory Option Request
kind: query
command: "02h 20h 00h 00h 01h <DATA01> <CKS>"
description: "Gets the value set for the specified lens memory option."
params:
- name: option
type: integer
description: "00h=LOAD BY SIGNAL, 01h=FORCED MUTE"
- id: lens_information_request
label: Lens Information Request
kind: query
command: "02h 22h 00h 00h 01h 00h 25h"
description: "Gets bitmask of lens operating states (memory, zoom, focus, shift H/V)."
params: []
- id: lens_profile_request
label: Lens Profile Request
kind: query
command: "02h 28h 00h 00h 00h 2Ah"
description: "Gets the selected profile number of the reference lens memory."
params: []
- id: gain_parameter_request
label: Gain Parameter Request
kind: query
command: "03h 05h 00h 00h 03h <DATA01> 00h 00h <CKS>"
description: "Gets status, limits, default, current value, and adjustment widths for the specified gain parameter."
params:
- name: gain_name
type: integer
description: "00h=PICTURE/BRIGHTNESS, 01h=PICTURE/CONTRAST, 02h=PICTURE/COLOR, 03h=PICTURE/HUE, 04h=PICTURE/SHARPNESS, 05h=VOLUME, 96h=LAMP ADJUST/LIGHT ADJUST"
- id: setting_request
label: Setting Request
kind: query
command: "00h 85h 00h 00h 01h 00h 86h"
description: "Gets base model type, sound function availability, and profile number."
params: []
- id: running_status_request
label: Running Status Request
kind: query
command: "00h 85h 00h 00h 01h 01h 87h"
description: "Gets power status, cooling process, power on/off process, and operation status."
params: []
- id: input_status_request
label: Input Status Request
kind: query
command: "00h 85h 00h 00h 01h 02h 88h"
description: "Gets signal switch process, signal list number, selection signal type, and content displayed."
params: []
- id: mute_status_request
label: Mute Status Request
kind: query
command: "00h 85h 00h 00h 01h 03h 89h"
description: "Gets picture mute, sound mute, onscreen mute, forced onscreen mute, and onscreen display status."
params: []
- id: model_name_request
label: Model Name Request
kind: query
command: "00h 85h 00h 00h 01h 04h 8Ah"
description: "Gets the 32-byte NUL-terminated model name string."
params: []
- id: cover_status_request
label: Cover Status Request
kind: query
command: "00h 85h 00h 00h 01h 05h 8Bh"
description: "Gets the status of the mirror cover or lens cover."
params: []
- id: information_string_request
label: Information String Request
kind: query
command: "00h D0h 00h 00h 03h 00h <DATA01> 01h <CKS>"
description: "Gets horizontal or vertical synchronous frequency information string."
params:
- name: information_type
type: integer
description: "03h=Horizontal synchronous frequency, 04h=Vertical synchronous frequency"
- id: eco_mode_request
label: Eco Mode Request
kind: query
command: "03h B0h 00h 00h 01h 07h BBh"
description: "Gets the value set for the eco mode (Light mode or Lamp mode)."
params: []
- id: lan_projector_name_request
label: LAN Projector Name Request
kind: query
command: "03h B0h 00h 00h 01h 2Ch E0h"
description: "Gets the 17-byte NUL-terminated projector name."
params: []
- id: mac_address_request
label: LAN MAC Address Request
kind: query
command: "03h B0h 00h 00h 02h 9Ah 00h 4Fh"
description: "Gets the 6-byte MAC address of the projector."
params: []
- id: pip_pbp_request
label: PIP/Picture by Picture Request
kind: query
command: "03h B0h 00h 00h 02h C5h <DATA01> <CKS>"
description: "Gets the value set for PIP mode, start position, or sub input."
params:
- name: parameter
type: integer
description: "00h=MODE, 01h=START POSITION, 02h=SUB INPUT/SUB INPUT 1, 09h=SUB INPUT 2, 0Ah=SUB INPUT 3"
- id: edge_blending_mode_request
label: Edge Blending Mode Request
kind: query
command: "03h B0h 00h 00h 02h DFh 00h 94h"
description: "Gets the value set for edge blending (OFF/ON)."
params: []
- id: base_model_type_request
label: Base Model Type Request
kind: query
command: "00h BFh 00h 00h 01h 00h C0h"
description: "Gets the base model type and model name."
params: []
- id: serial_number_request
label: Serial Number Request
kind: query
command: "00h BFh 00h 00h 02h 01h 06h C8h"
description: "Gets the 16-byte NUL-terminated serial number."
params: []
- id: basic_information_request
label: Basic Information Request
kind: query
command: "00h BFh 00h 00h 01h 02h C2h"
description: "Gets operation status, content displayed, signal types, mute states, and freeze status."
params: []
Feedbacks
feedbacks:
- id: error_status
label: Error Status
type: binary
description: "12-byte bitmask of error conditions (cover, fan, temperature, lamp, formatter, FPGA, mirror, ballast, iris, interlock, etc.). Bit=0 normal, bit=1 error."
- id: power_status
label: Power Status
type: enum
values: [standby, power_on, cooling, standby_error, standby_sleep, standby_power_saving, network_standby]
description: "Running status DATA06: 00h=Standby(Sleep), 04h=Power on, 05h=Cooling, 06h=Standby(error), 0Fh=Standby(Power saving), 10h=Network standby."
- id: power_on_off_process
label: Power Process
type: enum
values: [not_executing, executing]
description: "DATA05 from running status: 00h=Not executed, 01h=During execution."
- id: cooling_process
label: Cooling Process
type: enum
values: [not_executing, executing]
description: "DATA04 from running status: 00h=Not executed, 01h=During execution."
- id: input_status
label: Input Status
type: composite
description: "Signal switch process, signal list number, selection signal type 1 & 2, signal list type, test pattern display, content displayed."
- id: mute_status
label: Mute Status
type: composite
description: "Picture mute, sound mute, onscreen mute, forced onscreen mute, onscreen display - each on/off."
- id: model_name
label: Model Name
type: string
description: "32-byte NUL-terminated model name string."
- id: cover_status
label: Cover Status
type: enum
values: [normal_open, closed]
description: "DATA01: 00h=Normal (cover opened), 01h=Cover closed."
- id: projector_information
label: Projector Information
type: composite
description: "Projector name (49 bytes), lamp usage time (seconds, DATA83-86), filter usage time (seconds, DATA87-90). Updated at 1-minute intervals."
- id: filter_usage
label: Filter Usage Information
type: composite
description: "Filter usage time (seconds, DATA01-04), filter alarm start time (seconds, DATA05-08). Returns -1 if undefined."
- id: lamp_information
label: Lamp Information
type: composite
description: "Per-lamp (lamp 1 or lamp 2): usage time in seconds, remaining life in %. Negative remaining life indicates exceeded deadline."
- id: carbon_savings
label: Carbon Savings
type: composite
description: "Total or operational carbon savings in kg (max 99999) + mg (max 999999)."
- id: lens_position
label: Lens Position
type: composite
description: "Per axis: upper/lower adjustment range limits (16-bit) and current value (16-bit)."
- id: lens_information
label: Lens Information
type: binary
description: "Bitmask: Bit0=Lens memory (0=stop, 1=operating), Bit1=Zoom, Bit2=Focus, Bit3=Lens Shift H, Bit4=Lens Shift V."
- id: lens_profile
label: Lens Profile
type: enum
values: [profile_1, profile_2]
description: "Currently selected reference lens memory profile."
- id: lens_memory_option
label: Lens Memory Option
type: composite
description: "LOAD BY SIGNAL or FORCED MUTE, each ON/OFF."
- id: gain_parameter
label: Gain Parameter
type: composite
description: "For brightness/contrast/color/hue/sharpness/volume/lamp: status, upper/lower limits, default, current value, wide/narrow adjustment width."
- id: setting
label: Projector Setting
type: composite
description: "Base model type (3 bytes), sound function (available/not), profile number (clock/sleep timer)."
- id: eco_mode
label: Eco Mode
type: integer
description: "Current eco/lamp/light mode value. Mapping deferred to Appendix."
- id: projector_name
label: LAN Projector Name
type: string
description: "17-byte NUL-terminated projector name."
- id: mac_address
label: MAC Address
type: string
description: "6-byte MAC address."
- id: pip_pbp_status
label: PIP/Picture by Picture Status
type: composite
description: "MODE (PIP/PbP), START POSITION (corner), SUB INPUT 1/2/3 values."
- id: edge_blending_status
label: Edge Blending Status
type: enum
values: [off, on]
description: "DATA01: 00h=OFF, 01h=ON."
- id: base_model_type
label: Base Model Type
type: composite
description: "Base model type (2-byte) + model name (NUL-terminated)."
- id: serial_number
label: Serial Number
type: string
description: "16-byte NUL-terminated serial number."
- id: basic_information
label: Basic Information
type: composite
description: "Operation status, content displayed, signal type 1/2, display signal type, video/sound/onscreen mute, freeze status."
- id: information_string
label: Information String
type: string
description: "Horizontal or vertical synchronous frequency string."
Variables
variables:
- id: brightness
label: Brightness
type: integer
description: "Picture brightness. Adjustable via PICTURE ADJUST (target 00h)."
- id: contrast
label: Contrast
type: integer
description: "Picture contrast. Adjustable via PICTURE ADJUST (target 01h)."
- id: color
label: Color
type: integer
description: "Picture color saturation. Adjustable via PICTURE ADJUST (target 02h)."
- id: hue
label: Hue
type: integer
description: "Picture hue. Adjustable via PICTURE ADJUST (target 03h)."
- id: sharpness
label: Sharpness
type: integer
description: "Picture sharpness. Adjustable via PICTURE ADJUST (target 04h)."
- id: volume
label: Volume
type: integer
description: "Sound volume level. Adjustable via VOLUME ADJUST."
- id: lamp_adjust
label: Lamp Adjust / Light Adjust
type: integer
description: "Lamp/light output level. Adjustable via OTHER ADJUST (target 96h FFh)."
Events
# UNRESOLVED: no unsolicited event/notification mechanism described in source
Macros
# UNRESOLVED: no multi-step macro sequences described in source
Safety
confirmation_required_for: []
interlocks: []
# Note: POWER ON/OFF commands reject other commands during power transitions.
# No explicit safety interlock procedure documented in source.
Notes
- Binary protocol: commands are hex byte sequences with trailing checksum (low-order byte of sum of all preceding bytes).
- Response prefix
2xh= success;Axh= error with ERR1/ERR2 codes. - Commands include control ID (ID1) and model code (ID2) parameters in responses.
- Input terminal, aspect, eco mode, sub-input, and base model type value mappings are referenced in an Appendix ("Supplementary Information by Command") not included in the source document.
- Error codes: ERR1=00h/ERR2=00h = unrecognized command; ERR1=02h/ERR2=0Dh = power off; ERR1=02h/ERR2=0Fh = no authority.
- Power ON/OFF blocks all other commands during execution (including cooling period).
- Picture/sound/onscreen mute auto-clear on input switch or signal change; sound mute also auto-clears on volume adjustment.
- Lamp usage time updated at 1-minute intervals despite second-level resolution.
- Baud rate configurable: 115200, 38400, 19200, 9600, or 4800 bps (115200 listed first in source).
- LAN connection: TCP port 7142.
Provenance
source_domains:
- sharpdisplays.eu
source_urls:
- https://www.sharpdisplays.eu/p/download/cp/Products/Projectors/Shared/CommandLists/NEC-ExternalControlManual-english.pdf
retrieved_at: 2026-05-15T00:10:18.759Z
last_checked_at: 2026-06-10T00:33:34.941Z
Verification Summary
verdict: verified
checked_at: 2026-06-10T00:33:34.941Z
matched_actions: 53
action_count: 53
confidence: medium
summary: "All 53 spec action-units verified 1:1 against source. Hex codes, parameter structures, and values exact-match. UNRESOLVEDs properly flagged for missing appendices (not spec defects). No drift or fabrication detected. (18 unresolved item(s) noted in Known Gaps.)"
Known Gaps
- "input terminal value mapping deferred to Appendix \"Supplementary Information by Command\" not included in source"
- "eco mode value mapping deferred to Appendix not included in source"
- "aspect value mapping deferred to Appendix not included in source"
- "sub input value mapping for PIP/PbP deferred to Appendix not included in source"
- "base model type value mapping deferred to Appendix not included in source"
- "wireless LAN serial config not stated"
- "flow control not stated in source"
- "full input terminal mapping in Appendix not included"
- "axis enumeration not explicitly listed in source for request command\""
- "no unsolicited event/notification mechanism described in source"
- "no multi-step macro sequences described in source"
- "control ID (ID1) default value and configuration method not stated"
- "model code (ID2) value for MT Series1 not stated"
- "Appendix \"Supplementary Information by Command\" not included — input terminal, aspect, eco mode, sub-input, base model type mappings missing"
- "wireless LAN communication conditions not specified"
- "flow control setting for serial not stated"
- "maximum concurrent connection count not stated"
- "command response timing / timeout values not stated"
From the AI4AV catalog (https://ai4av.net) · ODbL-1.0