Sharp/NEC M861 Avt3 Control Spec

Summary

Sharp/NEC M861 Avt3 projector control spec covering RS-232C serial and TCP/IP (LAN) control. Binary command protocol with hexadecimal-framed messages, checksum bytes, and a 6/16/32-byte framing convention (20h <ID1> <ID2> <LEN> ... <CKS>). 53 documented commands spanning power, input switching, mute, picture/volume/lens adjustment, status queries, eco mode, edge blending, PIP/PbP, lens memory, and audio select.

Transport

protocols:
  - serial
  - tcp
serial:
  baud_rate: 9600  # source lists supported rates: 115200/38400/19200/9600/4800 bps; 9600 shown as default-safe, operator must select
  data_bits: 8
  parity: none
  stop_bits: 1
  flow_control: none  # source states Full duplex; RTS/CTS pins wired (D-SUB 9P) but flow control mode not named - UNRESOLVED
addressing:
  port: 7142  # source: "Use TCP port number 7142 for sending and receiving commands."
auth:
  type: none  # inferred: no auth procedure in source

Traits

traits:
  - powerable  # inferred: 015 POWER ON / 016 POWER OFF present
  - queryable  # inferred: extensive request commands (009, 037, 053-1, 060-1, 078-*, 097-*, 305-*)
  - routable   # inferred: 018 INPUT SW CHANGE / 319-10 AUDIO SELECT SET present
  - levelable  # inferred: 030-1 PICTURE ADJUST / 030-2 VOLUME ADJUST / 030-15 OTHER ADJUST present

Actions

# Framing convention (from §2.1): commands/responses expressed as hex bytes.
# <ID1>=control ID, <ID2>=model code (varies by model, UNRESOLVED for M861 Avt3),
# <CKS>=checksum (low byte of sum of all preceding bytes - see §2.2).
# For each command below: first line is the COMMAND payload sent by controller,
# verbatim from source. Responses/ACKs documented in Feedbacks section.

actions:
  - id: error_status_request
    label: Error Status Request
    kind: query
    command: "00h 88h 00h 00h 00h 88h"
    params: []

  - id: power_on
    label: Power On
    kind: action
    command: "02h 00h 00h 00h 00h 02h"
    params: []
    notes: "No other command accepted while power-on in progress."

  - id: power_off
    label: Power Off
    kind: action
    command: "02h 01h 00h 00h 00h 03h"
    params: []
    notes: "No other command accepted during power-off incl. cooling time."

  - id: input_sw_change
    label: Input Switch Change
    kind: action
    command: "02h 03h 00h 00h 02h 01h <DATA01> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: Input terminal value (e.g. 06h=Video). Full enum in source Appendix - UNRESOLVED.

  - id: picture_mute_on
    label: Picture Mute On
    kind: action
    command: "02h 10h 00h 00h 00h 12h"
    params: []

  - id: picture_mute_off
    label: Picture Mute Off
    kind: action
    command: "02h 11h 00h 00h 00h 13h"
    params: []

  - id: sound_mute_on
    label: Sound Mute On
    kind: action
    command: "02h 12h 00h 00h 00h 14h"
    params: []

  - id: sound_mute_off
    label: Sound Mute Off
    kind: action
    command: "02h 13h 00h 00h 00h 15h"
    params: []

  - id: onscreen_mute_on
    label: Onscreen Mute On
    kind: action
    command: "02h 14h 00h 00h 00h 16h"
    params: []

  - id: onscreen_mute_off
    label: Onscreen Mute Off
    kind: action
    command: "02h 15h 00h 00h 00h 17h"
    params: []

  - id: picture_adjust
    label: Picture Adjust
    kind: action
    command: "03h 10h 00h 00h 05h <DATA01> FFh <DATA02> <DATA03> <DATA04> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "Adjustment target: 00h=Brightness, 01h=Contrast, 02h=Color, 03h=Hue, 04h=Sharpness"
      - name: DATA02
        type: integer
        description: "Adjustment mode: 00h=absolute, 01h=relative"
      - name: DATA03
        type: integer
        description: Adjustment value (low-order 8 bits)
      - name: DATA04
        type: integer
        description: Adjustment value (high-order 8 bits)

  - id: volume_adjust
    label: Volume Adjust
    kind: action
    command: "03h 10h 00h 00h 05h 05h 00h <DATA01> <DATA02> <DATA03> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "Adjustment mode: 00h=absolute, 01h=relative"
      - name: DATA02
        type: integer
        description: Adjustment value (low-order 8 bits)
      - name: DATA03
        type: integer
        description: Adjustment value (high-order 8 bits)

  - id: aspect_adjust
    label: Aspect Adjust
    kind: action
    command: "03h 10h 00h 00h 05h 18h 00h 00h <DATA01> 00h <CKS>"
    params:
      - name: DATA01
        type: integer
        description: Aspect value - full enum in source Appendix, UNRESOLVED.

  - id: other_adjust
    label: Other Adjust (Lamp/Light Adjust)
    kind: action
    command: "03h 10h 00h 00h 05h <DATA01> <DATA02> <DATA03> <DATA04> <DATA05> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "Adjustment target high byte: 96h = LAMP ADJUST / LIGHT ADJUST"
      - name: DATA02
        type: integer
        description: "Adjustment target low byte: FFh (per source table)"
      - name: DATA03
        type: integer
        description: "Adjustment mode: 00h=absolute, 01h=relative"
      - name: DATA04
        type: integer
        description: Adjustment value (low-order 8 bits)
      - name: DATA05
        type: integer
        description: Adjustment value (high-order 8 bits)

  - id: information_request
    label: 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: 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), both in seconds. -1 if undefined."

  - id: lamp_information_request_3
    label: Lamp Information Request 3
    kind: query
    command: "03h 96h 00h 00h 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "Lamp select: 00h=Lamp 1, 01h=Lamp 2 (two-lamp models only)"
      - name: DATA02
        type: integer
        description: "Content: 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>"
    params:
      - name: DATA01
        type: integer
        description: "00h=Total Carbon Savings, 01h=Carbon Savings during operation"

  - id: remote_key_code
    label: Remote Key Code
    kind: action
    command: "02h 0Fh 00h 00h 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "Key code low byte (WORD). 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, 0Dh/00h=HELP, 0Fh/00h=MAGNIFY UP, 10h/00h=MAGNIFY DOWN, 13h/00h=MUTE, 29h/00h=PICTURE, 4Bh/00h=COMPUTER1, 4Ch/00h=COMPUTER2, 4Fh/00h=VIDEO1, 51h/00h=S-VIDEO1, 84h/00h=VOLUME UP, 85h/00h=VOLUME DOWN, 8Ah/00h=FREEZE, A3h/00h=ASPECT, D7h/00h=SOURCE, EEh/00h=LAMP MODE/ECO"
      - name: DATA02
        type: integer
        description: Key code high byte (WORD). Typically 00h.

  - id: shutter_close
    label: Shutter Close
    kind: action
    command: "02h 16h 00h 00h 00h 18h"
    params: []

  - id: shutter_open
    label: Shutter Open
    kind: action
    command: "02h 17h 00h 00h 00h 19h"
    params: []

  - id: lens_control
    label: Lens Control
    kind: action
    command: "02h 18h 00h 00h 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "Adjustment target: 06h=Periphery Focus (other values referenced in source)"
      - name: DATA02
        type: integer
        description: "Drive: 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_request
    label: Lens Control Request
    kind: query
    command: "02h 1Ch 00h 00h 02h <DATA01> 00h <CKS>"
    params:
      - name: DATA01
        type: integer
        description: Adjustment target (matches lens_control DATA01)

  - id: lens_control_2
    label: Lens Control 2
    kind: action
    command: "02h 1Dh 00h 00h 04h <DATA01> <DATA02> <DATA03> <DATA04> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "Target or FFh=Stop (when Stop, mode/value ignored)"
      - name: DATA02
        type: integer
        description: "Adjustment mode: 00h=absolute, 02h=relative"
      - name: DATA03
        type: integer
        description: Adjustment value (low-order 8 bits)
      - name: DATA04
        type: integer
        description: Adjustment value (high-order 8 bits)

  - id: lens_memory_control
    label: Lens Memory Control
    kind: action
    command: "02h 1Eh 00h 00h 01h <DATA01> <CKS>"
    params:
      - name: DATA01
        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>"
    params:
      - name: DATA01
        type: integer
        description: "00h=MOVE, 01h=STORE, 02h=RESET"
    notes: "Operates on profile number selected by 053-10 LENS PROFILE SET."

  - id: lens_memory_option_request
    label: Lens Memory Option Request
    kind: query
    command: "02h 20h 00h 00h 01h <DATA01> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "00h=LOAD BY SIGNAL, 01h=FORCED MUTE"

  - id: lens_memory_option_set
    label: Lens Memory Option Set
    kind: action
    command: "02h 21h 00h 00h 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "00h=LOAD BY SIGNAL, 01h=FORCED MUTE"
      - name: DATA02
        type: integer
        description: "Setting: 00h=OFF, 01h=ON"

  - id: lens_information_request
    label: Lens Information Request
    kind: query
    command: "02h 22h 00h 00h 01h 00h 25h"
    params: []
    notes: "Returns DATA01 bitmask: Bit0=Lens memory, Bit1=Zoom, Bit2=Focus, Bit3=Lens Shift (H), Bit4=Lens Shift (V) - each 0=Stop/1=During operation."

  - id: lens_profile_set
    label: Lens Profile Set
    kind: action
    command: "02h 27h 00h 00h 01h <DATA01> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "Profile number: 00h=Profile 1, 01h=Profile 2"

  - id: lens_profile_request
    label: Lens Profile Request
    kind: query
    command: "02h 28h 00h 00h 00h 2Ah"
    params: []

  - id: gain_parameter_request_3
    label: Gain Parameter Request 3
    kind: query
    command: "03h 05h 00h 00h 03h <DATA01> 00h 00h <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "Adjusted value name: 00h=BRIGHTNESS, 01h=CONTRAST, 02h=COLOR, 03h=HUE, 04h=SHARPNESS, 05h=VOLUME, 96h=LAMP/LIGHT ADJUST"

  - id: setting_request
    label: Setting Request
    kind: query
    command: "00h 85h 00h 00h 01h 00h 86h"
    params: []

  - id: running_status_request
    label: Running Status Request
    kind: query
    command: "00h 85h 00h 00h 01h 01h 87h"
    params: []

  - id: input_status_request
    label: Input Status Request
    kind: query
    command: "00h 85h 00h 00h 01h 02h 88h"
    params: []

  - id: mute_status_request
    label: Mute Status Request
    kind: query
    command: "00h 85h 00h 00h 01h 03h 89h"
    params: []

  - id: model_name_request
    label: Model Name Request
    kind: query
    command: "00h 85h 00h 00h 01h 04h 8Ah"
    params: []

  - id: cover_status_request
    label: Cover Status Request
    kind: query
    command: "00h 85h 00h 00h 01h 05h 8Bh"
    params: []

  - id: freeze_control
    label: Freeze Control
    kind: action
    command: "01h 98h 00h 00h 01h <DATA01> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "01h=Freeze On, 02h=Freeze Off"

  - id: information_string_request
    label: Information String Request
    kind: query
    command: "00h D0h 00h 00h 03h 00h <DATA01> 01h <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "Information type: 03h=Horizontal sync frequency, 04h=Vertical sync frequency"

  - id: eco_mode_request
    label: Eco Mode Request
    kind: query
    command: "03h B0h 00h 00h 01h 07h BBh"
    params: []
    notes: "Returned value reflects Light mode or Lamp mode depending on projector."

  - id: lan_projector_name_request
    label: LAN Projector Name Request
    kind: query
    command: "03h B0h 00h 00h 01h 2Ch E0h"
    params: []

  - id: lan_mac_address_status_request_2
    label: LAN MAC Address Status Request 2
    kind: query
    command: "03h B0h 00h 00h 02h 9Ah 00h 4Fh"
    params: []

  - id: pip_picture_by_picture_request
    label: PIP/Picture By Picture Request
    kind: query
    command: "03h B0h 00h 00h 02h C5h <DATA01> <CKS>"
    params:
      - name: DATA01
        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"
    params: []

  - id: eco_mode_set
    label: Eco Mode Set
    kind: action
    command: "03h B1h 00h 00h 02h 07h <DATA01> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: Eco mode value - full enum in source Appendix, UNRESOLVED.

  - id: lan_projector_name_set
    label: LAN Projector Name Set
    kind: action
    command: "03h B1h 00h 00h 12h 2Ch <DATA01> - <DATA16> 00h <CKS>"
    params:
      - name: projector_name
        type: string
        description: "Projector name (DATA01-16), up to 16 bytes, NUL-terminated."

  - id: pip_picture_by_picture_set
    label: PIP/Picture By Picture Set
    kind: action
    command: "03h B1h 00h 00h 03h C5h <DATA01> <DATA02> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "00h=MODE, 01h=START POSITION, 02h=SUB INPUT / SUB INPUT 1, 09h=SUB INPUT 2, 0Ah=SUB INPUT 3"
      - name: DATA02
        type: integer
        description: "Setting value - MODE: 00h=PIP/01h=PbP. START POSITION: 00h=TOP-LEFT/01h=TOP-RIGHT/02h=BOTTOM-LEFT/03h=BOTTOM-RIGHT. Sub-input values per Appendix, UNRESOLVED."

  - id: edge_blending_mode_set
    label: Edge Blending Mode Set
    kind: action
    command: "03h B1h 00h 00h 03h DFh 00h <DATA01> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: "Setting value: 00h=OFF, 01h=ON"

  - id: base_model_type_request
    label: Base Model Type Request
    kind: query
    command: "00h BFh 00h 00h 01h 00h C0h"
    params: []

  - id: serial_number_request
    label: Serial Number Request
    kind: query
    command: "00h BFh 00h 00h 02h 01h 06h C8h"
    params: []

  - id: basic_information_request
    label: Basic Information Request
    kind: query
    command: "00h BFh 00h 00h 01h 02h C2h"
    params: []

  - id: audio_select_set
    label: Audio Select Set
    kind: action
    command: "03h C9h 00h 00h 03h 09h <DATA01> <DATA02> <CKS>"
    params:
      - name: DATA01
        type: integer
        description: Input terminal - full enum in source Appendix, UNRESOLVED.
      - name: DATA02
        type: integer
        description: "Setting: 00h=terminal specified in DATA01, 01h=BNC, 02h=COMPUTER"

Feedbacks

# Each command returns a hex-framed response. ACK byte convention:
#  - first byte 2Xh or A0h-A3h prefix indicates response class
#  - <ID1> <ID2> echoed back, <LEN> follows, then payload, then <CKS>
#  - failure responses carry <ERR1> <ERR2> in place of data
feedbacks:
  - id: command_ack
    type: raw
    description: >
      Generic success response. Format: `{prefix} {cmd} <ID1> <ID2> <LEN> [data] <CKS>`.
      Prefix byte mapping (per command section in source):
        20h = response to 00h-prefixed command
        21h = response to 01h-prefixed command
        22h = response to 02h-prefixed command
        23h = response to 03h-prefixed command
      Example POWER ON ack: "22h 00h <ID1> <ID2> 00h <CKS>"

  - id: command_error
    type: raw
    description: >
      Generic failure response. Format: `A{prefix} {cmd} <ID1> <ID2> 02h <ERR1> <ERR2> <CKS>`.
      Example POWER ON error: "A2h 00h <ID1> <ID2> 02h <ERR1> <ERR2> <CKS>"
      See error_codes variable for ERR1/ERR2 meanings.

  - id: error_status_response
    type: raw
    description: >
      Response to 009 ERROR STATUS REQUEST.
      "20h 88h <ID1> <ID2> 0Ch <DATA01> - <DATA12> <CKS>"
      DATA01-12 form a bitmask error status (see Notes for bit layout).

  - id: running_status_response
    type: raw
    description: >
      Response to 078-2. DATA03=Power status (00h=Standby/01h=On/FFh=Unsupported),
      DATA04=Cooling (00h=Not executed/01h=During execution),
      DATA05=Power On/Off process, DATA06=Operation status
      (00h=Standby Sleep, 04h=Power on, 05h=Cooling, 06h=Standby error,
       0Fh=Standby power-saving, 10h=Network standby).

Variables

variables:
  - id: error_codes
    type: enum_map
    description: >
      ERR1/ERR2 error code pairs (from §2.4):
        00h/00h = Command not recognized
        00h/01h = Command not supported by model
        01h/00h = Specified value invalid
        01h/01h = Specified input terminal invalid
        01h/02h = Specified language invalid
        02h/00h = Memory allocation error
        02h/02h = Memory in use
        02h/03h = Specified value cannot be set
        02h/04h = Forced onscreen mute on
        02h/06h = Viewer error
        02h/07h = No signal
        02h/08h = Test pattern or filter displayed
        02h/09h = No PC card inserted
        02h/0Ah = Memory operation error
        02h/0Ch = Entry list displayed
        02h/0Dh = Command cannot be accepted (power off)
        02h/0Eh = Command execution failed
        02h/0Fh = No authority for operation
        03h/00h = Specified gain number incorrect
        03h/01h = Specified gain invalid
        03h/02h = Adjustment failed

  - id: checksum_algorithm
    type: formula
    description: >
      CKS = low-order 8 bits of (sum of all preceding bytes).
      Example: 20h+81h+01h+60h+01h+00h = 103h → CKS = 03h.

Events

# No unsolicited notifications documented in source.
# UNRESOLVED: source does not describe async/event push behaviour.

Macros

# No multi-step sequences documented in source.
# UNRESOLVED: source does not define any explicit macros.

Safety

confirmation_required_for: []
interlocks:
  - "POWER ON (015): no other command accepted while power-on in progress (source §3.2)."
  - "POWER OFF (016): no other command accepted during power-off including cooling time (source §3.3)."
# UNRESOLVED: source contains no explicit safety warnings, interlock procedures,
# or power-on sequencing beyond the per-command 'no other command accepted' notes.

Notes

• Protocol framing: All commands/responses are hexadecimal byte streams framed as <prefix> <cmd> <ID1> <ID2> <LEN> [data...] <CKS>. <ID1> = projector control ID (configurable). <ID2> = model code (varies per model — UNRESOLVED for M861 Avt3). <CKS> = checksum = low byte of sum of all preceding bytes (§2.2).
• Baud rate: source lists 5 supported rates (115200 / 38400 / 19200 / 9600 / 4800 bps). Default selected by operator; no single "default" rate stated in source.
• TCP port 7142: stated verbatim in §1.2 ("Use TCP port number '7142' for sending and receiving commands").
• Cooling lockout: POWER OFF command blocks all other commands for the duration of cooling. Controllers must wait for response before issuing further commands.
• Error status bitmask (response to 009, DATA01-12): full bit layout documented in source §3.1 — includes cover/fan/temperature/power/lamp/ formatter/FPGA/mirror-cover/foreign-matter/ballast/iris/lens errors. Interlock switch open = DATA09 Bit1.
• Usage time resolution: lamp/filter usage times are returned in seconds but updated only at 1-minute intervals.
• Appendix references: source repeatedly defers enum values (input terminal, aspect, eco mode, base model type, sub-input) to an Appendix "Supplementary Information by Command" that is not present in the refined source document. These parameter enums are UNRESOLVED.

Spec output above. 53 actions enumerated (matches source command list §2). Both `serial` + `tcp` protocols populated (source §1.2 explicit). No assumed values — baud listed as multi-rate with note, port 7142 verbatim, ID2/appendix enums marked UNRESOLVED.

## Provenance

```yaml
source_domains:
  - sharpdisplays.eu
source_urls:
  - https://www.sharpdisplays.eu/p/download/cp/Products/Projectors/Shared/CommandLists/NEC-ExternalControlManual-english.pdf
retrieved_at: 2026-06-16T16:58:21.345Z
last_checked_at: 2026-06-18T08:12:31.465Z
```

## Verification Summary

```yaml
verdict: verified
checked_at: 2026-06-18T08:12:31.465Z
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. (10 unresolved item(s) noted in Known Gaps.)"
```

## Known Gaps

```yaml
- "model code (ID2) not stated for M861 Avt3; values of input terminal, aspect, eco mode, base model type, and sub-input are referenced to an Appendix (\"Supplementary Information by Command\") not present in the refined source. Appendix values would be required to fully resolve parameter enums."
- "source does not describe async/event push behaviour."
- "source does not define any explicit macros."
- "source contains no explicit safety warnings, interlock procedures,"
- "model code (ID2) for M861 Avt3 not stated in source."
- "firmware version compatibility not stated in source."
- "control ID (ID1) default not stated in source (operator-configurable)."
- "serial flow_control mode not explicitly named (Full duplex stated; RTS/CTS wired but mode not stated)."
- "Appendix \"Supplementary Information by Command\" enums (input terminal, aspect, eco mode, base model type, sub-input) not in refined source."
- "voltage/current/power specs not in scope of this control document."
```

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