Sharp/NEC PN-CE701H Control Spec

Summary

Sharp/NEC PN-CE701H projector control spec covering RS-232C serial and TCP/IP (wired/wireless LAN) control. The device uses a framed binary command protocol (hex bytes, trailing checksum) documented in "Projector Control Command Reference Manual" BDT140013 Rev 7.1. This spec enumerates all 53 documented commands: power, input switching, mute, picture/volume/aspect/gain adjust, shutter, lens control and memory, freeze, eco mode, edge blending, PIP/PbP, and a broad set of status/identity queries.

Transport

protocols:
  - serial
  - tcp
serial:
  # Baud rate supported set (no single default stated in source): 115200 / 38400 / 19200 / 9600 / 4800 bps
  baud_rate: 9600  # UNRESOLVED: default rate not designated; 9600 listed as one supported option
  data_bits: 8
  parity: none
  stop_bits: 1
  flow_control: null  # UNRESOLVED: flow control not explicitly stated; communication mode is "full duplex"
addressing:
  port: 7142
auth:
  type: none  # inferred: no auth procedure in source

Traits

traits:
  - powerable    # inferred from POWER ON / POWER OFF commands (015 / 016)
  - queryable    # inferred from many status/information request commands
  - levelable    # inferred from VOLUME / PICTURE / gain adjust commands (030-1 / 030-2 / 030-15)
  - routable     # inferred from INPUT SW CHANGE command (018)

Actions

actions:
  # --- Status / error queries (0xx) ---
  - id: error_status_request
    label: "009. ERROR STATUS REQUEST"
    kind: query
    command: "00h 88h 00h 00h 00h 88h"
    params: []
    notes: "Returns DATA01-DATA12 bitfield error flags (cover, fan, temp, lamp, etc.). Success response: 20h 88h <ID1> <ID2> 0Ch <DATA01>-<DATA12> <CKS>."

  # --- Power ---
  - id: power_on
    label: "015. POWER ON"
    kind: action
    command: "02h 00h 00h 00h 00h 02h"
    params: []
    notes: "No other command accepted while power is turning on."

  - id: power_off
    label: "016. POWER OFF"
    kind: action
    command: "02h 01h 00h 00h 00h 03h"
    params: []
    notes: "No other command accepted during power-off (including cooling time)."

  # --- Input switching ---
  - id: input_switch_change
    label: "018. INPUT SW CHANGE"
    kind: action
    command: "02h 03h 00h 00h 02h 01h {DATA01} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Input terminal code (see Appendix 'Supplementary Information by Command'). Example 06h = video port; verbatim example to video: 02h 03h 00h 00h 02h 01h 06h 0Eh."
    notes: "Success response DATA01=FFh means ended with error (no switch made)."

  # --- Mutes ---
  - id: picture_mute_on
    label: "020. PICTURE MUTE ON"
    kind: action
    command: "02h 10h 00h 00h 00h 12h"
    params: []
    notes: "Cleared by input/video signal switch."
  - id: picture_mute_off
    label: "021. PICTURE MUTE OFF"
    kind: action
    command: "02h 11h 00h 00h 00h 13h"
    params: []
  - id: sound_mute_on
    label: "022. SOUND MUTE ON"
    kind: action
    command: "02h 12h 00h 00h 00h 14h"
    params: []
    notes: "Cleared by input/video signal switch or volume adjustment."
  - id: sound_mute_off
    label: "023. SOUND MUTE OFF"
    kind: action
    command: "02h 13h 00h 00h 00h 15h"
    params: []
  - id: onscreen_mute_on
    label: "024. ONSCREEN MUTE ON"
    kind: action
    command: "02h 14h 00h 00h 00h 16h"
    params: []
    notes: "Cleared by input/video signal switch."
  - id: onscreen_mute_off
    label: "025. ONSCREEN MUTE OFF"
    kind: action
    command: "02h 15h 00h 00h 00h 17h"
    params: []

  # --- Adjustments (030-*) ---
  - id: picture_adjust
    label: "030-1. PICTURE ADJUST"
    kind: action
    command: "03h 10h 00h 00h 05h {DATA01} FFh {DATA02} {DATA03} {DATA04} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Adjustment target: 00h=Brightness, 01h=Contrast, 02h=Color, 03h=Hue, 04h=Sharpness."
      - name: DATA02
        type: byte
        description: "Adjustment mode: 00h=absolute, 01h=relative."
      - name: DATA03
        type: byte
        description: "Adjustment value (low-order 8 bits)."
      - name: DATA04
        type: byte
        description: "Adjustment value (high-order 8 bits)."
    notes: "Example set brightness to +10: 03h 10h 00h 00h 05h 00h FFh 00h 0Ah 00h 21h. Response result 0000h=success."

  - id: volume_adjust
    label: "030-2. VOLUME ADJUST"
    kind: action
    command: "03h 10h 00h 00h 05h 05h 00h {DATA01} {DATA02} {DATA03} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Adjustment mode: 00h=absolute, 01h=relative."
      - name: DATA02
        type: byte
        description: "Adjustment value (low-order 8 bits)."
      - name: DATA03
        type: byte
        description: "Adjustment value (high-order 8 bits)."
    notes: "Example set volume to 10: 03h 10h 00h 00h 05h 05h 00h 00h 0Ah 00h 27h."

  - id: aspect_adjust
    label: "030-12. ASPECT ADJUST"
    kind: action
    command: "03h 10h 00h 00h 05h 18h 00h 00h {DATA01} 00h {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Aspect value (see Appendix 'Supplementary Information by Command')."

  - id: other_adjust
    label: "030-15. OTHER ADJUST"
    kind: action
    command: "03h 10h 00h 00h 05h {DATA01} {DATA02} {DATA03} {DATA04} {DATA05} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Adjustment target high byte (96h for LAMP ADJUST / LIGHT ADJUST when DATA02=FFh)."
      - name: DATA02
        type: byte
        description: "Adjustment target low byte (FFh with DATA01=96h = LAMP/LIGHT ADJUST)."
      - name: DATA03
        type: byte
        description: "Adjustment mode: 00h=absolute, 01h=relative."
      - name: DATA04
        type: byte
        description: "Adjustment value (low-order 8 bits)."
      - name: DATA05
        type: byte
        description: "Adjustment value (high-order 8 bits)."

  # --- Information requests (037-*) ---
  - id: information_request
    label: "037. INFORMATION REQUEST"
    kind: query
    command: "03h 8Ah 00h 00h 00h 8Dh"
    params: []
    notes: "Returns projector name (DATA01-49), lamp usage time seconds (DATA83-86), filter usage time seconds (DATA87-90). Updated at 1-minute intervals."
  - id: filter_usage_information_request
    label: "037-3. FILTER USAGE INFORMATION REQUEST"
    kind: query
    command: "03h 95h 00h 00h 00h 98h"
    params: []
    notes: "Returns filter usage time (DATA01-04) and filter alarm start time (DATA05-08) in seconds; -1 if undefined."
  - id: lamp_information_request_3
    label: "037-4. LAMP INFORMATION REQUEST 3"
    kind: query
    command: "03h 96h 00h 00h 02h {DATA01} {DATA02} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Lamp selector: 00h=Lamp 1, 01h=Lamp 2 (two-lamp models only)."
      - name: DATA02
        type: byte
        description: "Content: 01h=lamp usage time (seconds), 04h=lamp remaining life (%)."
    notes: "Example get lamp 1 usage time: 03h 96h 00h 00h 02h 00h 01h 9Ch. Remaining life is negative if replacement deadline exceeded."
  - id: carbon_savings_information_request
    label: "037-6. CARBON SAVINGS INFORMATION REQUEST"
    kind: query
    command: "03h 9Ah 00h 00h 01h {DATA01} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "00h=Total Carbon Savings, 01h=Carbon Savings during operation."
    notes: "Returns kg (DATA02-05, max 99999) and mg (DATA06-09, max 999999)."

  # --- Remote / shutter ---
  - id: remote_key_code
    label: "050. REMOTE KEY CODE"
    kind: action
    command: "02h 0Fh 00h 00h 02h {DATA01} {DATA02} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Key code low byte (WORD). See key code list: e.g. 02h=POWER ON, 06h=MENU, 07h=UP, 29h=PICTURE, 4Bh=COMPUTER1, 84h=VOLUME UP, 8Ah=FREEZE, D7h=SOURCE, EEh=LAMP MODE/ECO."
      - name: DATA02
        type: byte
        description: "Key code high byte (00h for all listed keys)."
    notes: "Example send AUTO: 02h 0Fh 00h 00h 02h 05h 00h 18h. Response DATA01=FFh means error."
  - id: shutter_close
    label: "051. SHUTTER CLOSE"
    kind: action
    command: "02h 16h 00h 00h 00h 18h"
    params: []
  - id: shutter_open
    label: "052. SHUTTER OPEN"
    kind: action
    command: "02h 17h 00h 00h 00h 19h"
    params: []

  # --- Lens (053-*) ---
  - id: lens_control
    label: "053. LENS CONTROL"
    kind: action
    command: "02h 18h 00h 00h 02h {DATA01} {DATA02} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Lens target: 06h=Periphery Focus (per source table)."
      - name: DATA02
        type: byte
        description: "Motion: 00h=Stop, 01h=drive +1s, 02h=drive +0.5s, 03h=drive +0.25s, 7Fh=drive plus, 81h=drive minus, FDh=drive -0.25s, FEh=drive -0.5s, FFh=drive -1s."
    notes: "After 7Fh/81h, send 00h to stop. Lens can be re-driven without stop while moving."
  - id: lens_control_request
    label: "053-1. LENS CONTROL REQUEST"
    kind: query
    command: "02h 1Ch 00h 00h 02h {DATA01} 00h {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Lens target (e.g. 06h=Periphery Focus)."
    notes: "Returns upper/lower/current adjustment range (16-bit) in DATA02-DATA07."
  - id: lens_control_2
    label: "053-2. LENS CONTROL 2"
    kind: action
    command: "02h 1Dh 00h 00h 04h {DATA01} {DATA02} {DATA03} {DATA04} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Lens target; FFh=Stop (mode/value ignored)."
      - name: DATA02
        type: byte
        description: "Adjustment mode: 00h=absolute, 02h=relative."
      - name: DATA03
        type: byte
        description: "Adjustment value (low-order 8 bits)."
      - name: DATA04
        type: byte
        description: "Adjustment value (high-order 8 bits)."
  - id: lens_memory_control
    label: "053-3. LENS MEMORY CONTROL"
    kind: action
    command: "02h 1Eh 00h 00h 01h {DATA01} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "00h=MOVE, 01h=STORE, 02h=RESET."
  - id: reference_lens_memory_control
    label: "053-4. REFERENCE LENS MEMORY CONTROL"
    kind: action
    command: "02h 1Fh 00h 00h 01h {DATA01} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "00h=MOVE, 01h=STORE, 02h=RESET."
    notes: "Acts on profile selected by 053-10 LENS PROFILE SET."
  - id: lens_memory_option_request
    label: "053-5. LENS MEMORY OPTION REQUEST"
    kind: query
    command: "02h 20h 00h 00h 01h {DATA01} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "00h=LOAD BY SIGNAL, 01h=FORCED MUTE."
    notes: "Returns setting value DATA02: 00h=OFF, 01h=ON."
  - id: lens_memory_option_set
    label: "053-6. LENS MEMORY OPTION SET"
    kind: action
    command: "02h 21h 00h 00h 02h {DATA01} {DATA02} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "00h=LOAD BY SIGNAL, 01h=FORCED MUTE."
      - name: DATA02
        type: byte
        description: "Setting value: 00h=OFF, 01h=ON."
  - id: lens_information_request
    label: "053-7. LENS INFORMATION REQUEST"
    kind: query
    command: "02h 22h 00h 00h 01h 00h 25h"
    params: []
    notes: "Returns DATA01 bitfield: Bit0 Lens memory, Bit1 Zoom, Bit2 Focus, Bit3 Lens Shift (H), Bit4 Lens Shift (V) (0=Stop, 1=During operation)."
  - id: lens_profile_set
    label: "053-10. LENS PROFILE SET"
    kind: action
    command: "02h 27h 00h 00h 01h {DATA01} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Profile number: 00h=Profile 1, 01h=Profile 2."
  - id: lens_profile_request
    label: "053-11. LENS PROFILE REQUEST"
    kind: query
    command: "02h 28h 00h 00h 00h 2Ah"
    params: []
    notes: "Returns DATA01 profile number: 00h=Profile 1, 01h=Profile 2."

  # --- Gain parameter request ---
  - id: gain_parameter_request_3
    label: "060-1. GAIN PARAMETER REQUEST 3"
    kind: query
    command: "03h 05h 00h 00h 03h {DATA01} 00h 00h {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Adjusted value name: 00h=BRIGHTNESS, 01h=CONTRAST, 02h=COLOR, 03h=HUE, 04h=SHARPNESS, 05h=VOLUME, 96h=LAMP/LIGHT ADJUST."
    notes: "Example get brightness: 03h 05h 00h 00h 03h 00h 00h 00h 0Bh. Returns status, upper/lower/default/current ranges, wide/narrow adjustment widths."

  # --- Status requests (078-*) ---
  - id: setting_request
    label: "078-1. SETTING REQUEST"
    kind: query
    command: "00h 85h 00h 00h 01h 00h 86h"
    params: []
    notes: "Returns base model type (DATA01-03), sound function (DATA04), profile/timer functions (DATA05)."
  - id: running_status_request
    label: "078-2. RUNNING STATUS REQUEST"
    kind: query
    command: "00h 85h 00h 00h 01h 01h 87h"
    params: []
    notes: "Returns power status (DATA03), cooling process (DATA04), power on/off process (DATA05), operation status (DATA06)."
  - id: input_status_request
    label: "078-3. INPUT STATUS REQUEST"
    kind: query
    command: "00h 85h 00h 00h 01h 02h 88h"
    params: []
    notes: "Returns signal switch process, signal list number (returned value is practical-1), selection signal type 1/2, signal list type, test pattern, content displayed."
  - id: mute_status_request
    label: "078-4. MUTE STATUS REQUEST"
    kind: query
    command: "00h 85h 00h 00h 01h 03h 89h"
    params: []
    notes: "Returns picture mute (DATA01), sound mute (DATA02), onscreen mute (DATA03), forced onscreen mute (DATA04), onscreen display (DATA05); each 00h=Off/01h=On."
  - id: model_name_request
    label: "078-5. MODEL NAME REQUEST"
    kind: query
    command: "00h 85h 00h 00h 01h 04h 8Ah"
    params: []
    notes: "Returns model name string DATA01-32 (NUL-terminated)."
  - id: cover_status_request
    label: "078-6. COVER STATUS REQUEST"
    kind: query
    command: "00h 85h 00h 00h 01h 05h 8Bh"
    params: []
    notes: "Returns DATA01: 00h=Normal (cover opened), 01h=Cover closed."

  # --- Freeze ---
  - id: freeze_control
    label: "079. FREEZE CONTROL"
    kind: action
    command: "01h 98h 00h 00h 01h {DATA01} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "01h=freeze on, 02h=freeze off."

  # --- Information string ---
  - id: information_string_request
    label: "084. INFORMATION STRING REQUEST"
    kind: query
    command: "00h D0h 00h 00h 03h 00h {DATA01} 01h {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Information type: 03h=Horizontal synchronous frequency, 04h=Vertical synchronous frequency."
    notes: "Returns label length (DATA02) and label/info strings (DATA03+, NUL-terminated)."

  # --- LAN / eco / PIP / edge-blending requests (097-*) ---
  - id: eco_mode_request
    label: "097-8. ECO MODE REQUEST"
    kind: query
    command: "03h B0h 00h 00h 01h 07h BBh"
    params: []
    notes: "Returns eco mode value (DATA01); may map to Light mode or Lamp mode depending on model."
  - id: lan_projector_name_request
    label: "097-45. LAN PROJECTOR NAME REQUEST"
    kind: query
    command: "03h B0h 00h 00h 01h 2Ch E0h"
    params: []
    notes: "Returns projector name DATA01-17 (NUL-terminated)."
  - id: lan_mac_address_status_request2
    label: "097-155. LAN MAC ADDRESS STATUS REQUEST2"
    kind: query
    command: "03h B0h 00h 00h 02h 9Ah 00h 4Fh"
    params: []
    notes: "Returns MAC address DATA01-06."
  - id: pip_picture_by_picture_request
    label: "097-198. PIP/PICTURE BY PICTURE REQUEST"
    kind: query
    command: "03h B0h 00h 00h 02h C5h {DATA01} {CKS}"
    params:
      - name: DATA01
        type: byte
        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: "097-243-1. EDGE BLENDING MODE REQUEST"
    kind: query
    command: "03h B0h 00h 00h 02h DFh 00h 94h"
    params: []
    notes: "Returns DATA01: 00h=OFF, 01h=ON."

  # --- LAN / eco / PIP / edge-blending sets (098-*) ---
  - id: eco_mode_set
    label: "098-8. ECO MODE SET"
    kind: action
    command: "03h B1h 00h 00h 02h 07h {DATA01} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Eco mode value (see Appendix 'Supplementary Information by Command'); sets Light mode or Lamp mode depending on model."
  - id: lan_projector_name_set
    label: "098-45. LAN PROJECTOR NAME SET"
    kind: action
    command: "03h B1h 00h 00h 12h 2Ch {DATA01}-{DATA16} 00h {CKS}"
    params:
      - name: DATA01-DATA16
        type: bytes
        description: "Projector name, up to 16 bytes (NUL-terminated)."
  - id: pip_picture_by_picture_set
    label: "098-198. PIP/PICTURE BY PICTURE SET"
    kind: action
    command: "03h B1h 00h 00h 03h C5h {DATA01} {DATA02} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "00h=MODE, 01h=START POSITION, 02h=SUB INPUT/SUB INPUT 1, 09h=SUB INPUT 2, 0Ah=SUB INPUT 3."
      - name: DATA02
        type: byte
        description: "Setting value. MODE: 00h=PIP/01h=PbP. START POSITION: 00h=TOP-LEFT..03h=BOTTOM-RIGHT. Sub input values per Appendix."
  - id: edge_blending_mode_set
    label: "098-243-1. EDGE BLENDING MODE SET"
    kind: action
    command: "03h B1h 00h 00h 03h DFh 00h {DATA01} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Setting value: 00h=OFF, 01h=ON."

  # --- Identity / basic info (305-*) ---
  - id: base_model_type_request
    label: "305-1. BASE MODEL TYPE REQUEST"
    kind: query
    command: "00h BFh 00h 00h 01h 00h C0h"
    params: []
    notes: "Returns base model type (DATA01-02, DATA12-13) and model name (DATA03-11, NUL-terminated)."
  - id: serial_number_request
    label: "305-2. SERIAL NUMBER REQUEST"
    kind: query
    command: "00h BFh 00h 00h 02h 01h 06h C8h"
    params: []
    notes: "Returns serial number string DATA01-16 (NUL-terminated)."
  - id: basic_information_request
    label: "305-3. BASIC INFORMATION REQUEST"
    kind: query
    command: "00h BFh 00h 00h 01h 02h C2h"
    params: []
    notes: "Returns operation status (DATA01), content displayed (DATA02), selection signal type 1/2 (DATA03/04), display signal type (DATA05), video/sound/onscreen mute, freeze status (DATA06-09)."

  # --- Audio select ---
  - id: audio_select_set
    label: "319-10. AUDIO SELECT SET"
    kind: action
    command: "03h C9h 00h 00h 03h 09h {DATA01} {DATA02} {CKS}"
    params:
      - name: DATA01
        type: byte
        description: "Input terminal (see Appendix 'Supplementary Information by Command')."
      - name: DATA02
        type: byte
        description: "Setting value: 00h=terminal specified in DATA01, 01h=BNC, 02h=COMPUTER."

Feedbacks

feedbacks:
  - id: error_status
    type: bitfield
    source: error_status_request
    description: "DATA01-DATA12 error flags: cover, fan, temperature, power, lamp off/replacement, lamp usage limit, formatter/FPGA, mirror cover, ballast, iris, lens install, interlock switch open, system errors."
  - id: power_state
    type: enum
    values: [standby, power_on, cooling, standby_error, standby_sleep, standby_power_saving, network_standby]
    source: running_status_request
    description: "From RUNNING STATUS DATA06 (and DATA03 power status)."
  - id: input_status
    type: object
    source: input_status_request
    description: "Signal list number, selection signal type 1/2, signal list type, test pattern, content displayed."
  - id: mute_status
    type: object
    source: mute_status_request
    description: "Picture/sound/onscreen/forced-onscreen mute and onscreen display flags."
  - id: cover_status
    type: enum
    values: [normal_open, closed]
    source: cover_status_request
  - id: lamp_usage_time
    type: integer
    unit: seconds
    source: lamp_information_request_3
  - id: lamp_remaining_life
    type: integer
    unit: percent
    source: lamp_information_request_3
    notes: "Negative if replacement deadline exceeded."
  - id: filter_usage_time
    type: integer
    unit: seconds
    source: filter_usage_information_request
  - id: model_name
    type: string
    source: model_name_request
  - id: serial_number
    type: string
    source: serial_number_request
  - id: projector_name
    type: string
    source: lan_projector_name_request
  - id: mac_address
    type: string
    source: lan_mac_address_status_request2
  - id: eco_mode
    type: enum
    source: eco_mode_request
    notes: "Concrete enum values not enumerated in source - see Appendix 'Supplementary Information by Command'."
  - id: lens_operation_status
    type: bitfield
    source: lens_information_request
    description: "Lens memory / zoom / focus / lens shift H+V operation flags (0=stop, 1=moving)."
  - id: edge_blending_mode
    type: enum
    values: [off, on]
    source: edge_blending_mode_request
  - id: pip_pbp_setting
    type: object
    source: pip_picture_by_picture_request
  - id: basic_information
    type: object
    source: basic_information_request

Variables

# Settable continuous levels are represented as parameterized Actions (030-1 PICTURE
# ADJUST, 030-2 VOLUME ADJUST, 030-15 OTHER ADJUST, 053-* lens controls). No additional
# stand-alone variables are documented outside those actions.
# UNRESOLVED: no separate variable table in source.

Events

# UNRESOLVED: source describes no unsolicited push/notification events. All data is
# returned only in response to an explicit request command.

Macros

# UNRESOLVED: source documents no named multi-step command sequences.

Safety

confirmation_required_for: []
interlocks:
  - id: power_transition_lockout
    description: "While POWER ON (015) or POWER OFF (016) is executing (including cooling time), no other command is accepted."
    source: "POWER ON / POWER OFF command notes."
  - id: interlock_switch
    description: "Error status DATA09 Bit1 'The interlock switch is open' is reported via ERROR STATUS REQUEST (009)."
    source: "009 ERROR STATUS REQUEST error information list."
  - id: power_off_rejection
    description: "Error code ERR1=02h ERR2=0Dh: 'The command cannot be accepted because the power is off.'"
    source: "2.4 Error code list."
notes: "No explicit confirmation-before-execute requirement is documented. Operational lockouts above are the only safety-relevant behaviors in source."

Notes

• Command framing: All commands and responses are hex-byte frames. Layout: [header/type] [code] [ID1] [ID2] [LEN] [DATA...] [CKS].
  • Command header/type byte: 00h=get, 01h/02h/03h=set categories.
  • Success response header = type | 0x20 (e.g. 20h, 21h, 22h, 23h); error response header = type | 0xA0 (A0h, A1h, A2h, A3h).
  • ID1 = control ID set on the projector; ID2 = model code (varies by model). Documented example commands use ID1=00h ID2=00h.
  • LEN = byte length of the DATA part following LEN.
  • CKS = checksum = low-order byte (8 bits) of the sum of all preceding bytes. Worked example: 20h+81h+01h+60h+01h+00h = 103h → CKS = 03h.
• Serial: RS-232C, D-SUB 9P PC CONTROL port, cross cable. Pinout: 2=RxD, 3=TxD, 5=GND, 7=RTS, 8=CTS. Full duplex.
• LAN: wired RJ-45 (10/100 Mbps auto, IEEE 802.3 / 802.3u) or optional wireless LAN unit. Commands sent/received over TCP port 7142.
• Errors: ERR1/ERR2 code table in section 2.4 (unrecognized command, unsupported, invalid value, invalid input, memory errors, forced onscreen mute, no signal, power off rejection, no authority, gain errors, etc.).
• Several DATA value enumerations (input terminal codes, aspect values, eco mode values, sub input values, base model types) are deferred to an "Appendix: Supplementary Information by Command" that is not present in this refined source excerpt.

Provenance

source_domains:
  - sharpdisplays.eu
source_urls:
  - https://www.sharpdisplays.eu/p/download/cp/Products/Projectors/Shared/CommandLists/NEC-ExternalControlManual-english.pdf
retrieved_at: 2026-06-17T06:25:20.014Z
last_checked_at: 2026-06-18T09:05:39.873Z

Verification Summary

verdict: verified
checked_at: 2026-06-18T09:05:39.873Z
matched_actions: 53
action_count: 53
confidence: medium
summary: "All 53 spec actions matched verbatim against source command reference; transport parameters verified; complete bidirectional coverage. (13 unresolved item(s) noted in Known Gaps.)"

Known Gaps

- "firmware version compatibility not stated in source."
- "default baud rate among the supported set not designated in source."
- "flow-control mode (hardware/software/none) not explicitly stated; only \"full duplex\" communication mode stated."
- "control ID (ID1) and model code (ID2) per-unit values must be read from the projector; example commands use 00h/00h."
- "default rate not designated; 9600 listed as one supported option"
- "flow control not explicitly stated; communication mode is \"full duplex\""
- "no separate variable table in source."
- "source describes no unsolicited push/notification events. All data is"
- "source documents no named multi-step command sequences."
- "default baud rate among supported set (115200/38400/19200/9600/4800) not designated in source."
- "flow-control mode (none/hardware/software) not explicitly stated; only \"full duplex\" communication mode stated."
- "ID1 control ID and ID2 model code values are per-unit/per-model and not fixed in source (examples use 00h/00h)."
- "Appendix 'Supplementary Information by Command' (input terminal codes, aspect values, eco mode values, sub input values, base model types) not included in the provided source text."

From the AI4AV catalog (https://ai4av.net) · ODbL-1.0