Sharp-NEC PA804UL Series control commands

Summary

Binary control protocol for Sharp-NEC PA804UL Series projectors over RS-232C serial and TCP/IP (wired LAN, port 7142). Covers power, input switching, picture/sound/onscreen mute, picture adjustment, volume, lens control, lens memory, shutter, freeze, eco mode, edge blending, PIP/PbP, and extensive status queries. Commands are fixed-length binary frames with hex-encoded parameters and a trailing checksum byte.

Transport

protocols:
  - serial
  - tcp
serial:
  baud_rate: null  # UNRESOLVED: source lists 115200/38400/19200/9600/4800 bps - default not stated
  data_bits: 8
  parity: none
  stop_bits: 1
  flow_control: none  # 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/off commands
  - routable     # inferred from input switch command
  - queryable    # inferred from multiple request commands
  - levelable    # inferred from volume/picture adjust commands
  - mutable      # inferred from picture/sound/onscreen mute commands

Actions

actions:
  - id: power_on
    label: Power On
    kind: action
    command: "02h 00h 00h 00h 00h 02h"
    response_success: "22h 00h <ID1> <ID2> 00h <CKS>"
    params: []
    notes: No other commands accepted while powering on.

  - id: power_off
    label: Power Off
    kind: action
    command: "02h 01h 00h 00h 00h 03h"
    response_success: "22h 01h <ID1> <ID2> 00h <CKS>"
    params: []
    notes: No other commands accepted during power-off including cooling time.

  - id: input_switch
    label: Input Switch
    kind: action
    command: "02h 03h 00h 00h 02h 01h <DATA01> <CKS>"
    response_success: "22h 03h <ID1> <ID2> 01h <DATA01> <CKS>"
    params:
      - name: input_terminal
        type: integer
        description: "Input terminal hex code (e.g. 06h=VIDEO). See appendix for model-specific codes."
    notes: "Response DATA01: 00h=success, FFh=error (no signal switch)."

  - id: picture_mute_on
    label: Picture Mute On
    kind: action
    command: "02h 10h 00h 00h 00h 12h"
    response_success: "22h 10h <ID1> <ID2> 00h <CKS>"
    params: []
    notes: Mute cancels on input switch or video signal switch.

  - id: picture_mute_off
    label: Picture Mute Off
    kind: action
    command: "02h 11h 00h 00h 00h 13h"
    response_success: "22h 11h <ID1> <ID2> 00h <CKS>"
    params: []

  - id: sound_mute_on
    label: Sound Mute On
    kind: action
    command: "02h 12h 00h 00h 00h 14h"
    response_success: "22h 12h <ID1> <ID2> 00h <CKS>"
    params: []
    notes: Mute cancels on input switch, video signal switch, or volume adjustment.

  - id: sound_mute_off
    label: Sound Mute Off
    kind: action
    command: "02h 13h 00h 00h 00h 15h"
    response_success: "22h 13h <ID1> <ID2> 00h <CKS>"
    params: []

  - id: onscreen_mute_on
    label: Onscreen Mute On
    kind: action
    command: "02h 14h 00h 00h 00h 16h"
    response_success: "22h 14h <ID1> <ID2> 00h <CKS>"
    params: []
    notes: Mute cancels on input switch or video signal switch.

  - id: onscreen_mute_off
    label: Onscreen Mute Off
    kind: action
    command: "02h 15h 00h 00h 00h 17h"
    response_success: "22h 15h <ID1> <ID2> 00h <CKS>"
    params: []

  - id: picture_adjust
    label: Picture Adjust
    kind: action
    command: "03h 10h 00h 00h 05h <DATA01> FFh <DATA02> <DATA03> <DATA04> <CKS>"
    response_success: "23h 10h <ID1> <ID2> 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: target
        type: integer
        description: "00h=Brightness, 01h=Contrast, 02h=Color, 03h=Hue, 04h=Sharpness"
      - name: mode
        type: integer
        description: "00h=absolute, 01h=relative"
      - name: value
        type: integer
        description: "16-bit signed adjustment value (low byte, high byte)"

  - id: volume_adjust
    label: Volume Adjust
    kind: action
    command: "03h 10h 00h 00h 05h 05h 00h <DATA01> <DATA02> <DATA03> <CKS>"
    response_success: "23h 10h <ID1> <ID2> 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: mode
        type: integer
        description: "00h=absolute, 01h=relative"
      - 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>"
    response_success: "23h 10h <ID1> <ID2> 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: aspect_value
        type: integer
        description: "Aspect hex code - model-specific, see appendix"

  - id: lamp_adjust
    label: Lamp/Light Adjust
    kind: action
    command: "03h 10h 00h 00h 05h 96h FFh <DATA01> <DATA02> <DATA03> <DATA04> <CKS>"
    response_success: "23h 10h <ID1> <ID2> 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: mode
        type: integer
        description: "00h=absolute, 01h=relative"
      - 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>"
    response_success: "22h 0Fh <ID1> <ID2> 01h <DATA01> <CKS>"
    params:
      - name: key_code
        type: integer
        description: "WORD key code (e.g. 02h 00h=POWER ON, 03h 00h=POWER OFF, 05h 00h=AUTO, 06h 00h=MENU, etc.)"
    notes: "Response DATA01: 00h=success, FFh=error."

  - id: shutter_close
    label: Shutter Close
    kind: action
    command: "02h 16h 00h 00h 00h 18h"
    response_success: "22h 16h <ID1> <ID2> 00h <CKS>"
    params: []

  - id: shutter_open
    label: Shutter Open
    kind: action
    command: "02h 17h 00h 00h 00h 19h"
    response_success: "22h 17h <ID1> <ID2> 00h <CKS>"
    params: []

  - id: lens_control
    label: Lens Control
    kind: action
    command: "02h 18h 00h 00h 02h <DATA01> <DATA02> <CKS>"
    response_success: "22h 18h <ID1> <ID2> 01h <DATA01> <CKS>"
    params:
      - name: target
        type: integer
        description: "00h=Zoom, 01h=Focus, 02h=Lens Shift H, 03h=Lens Shift V, 06h=Periphery Focus"
      - name: direction
        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"
    notes: Send 00h to stop continuous drive. While lens is driving, same command can re-issue without stop.

  - id: lens_control_2
    label: Lens Control 2 (Absolute/Relative)
    kind: action
    command: "02h 1Dh 00h 00h 04h <DATA01> <DATA02> <DATA03> <DATA04> <CKS>"
    response_success: "22h 1Dh <ID1> <ID2> 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: target
        type: integer
        description: "00h=Zoom, 01h=Focus, 02h=Lens Shift H, 03h=Lens Shift V, FFh=Stop"
      - name: mode
        type: integer
        description: "00h=absolute, 02h=relative"
      - name: value
        type: integer
        description: "16-bit adjustment value (low byte, high byte)"
    notes: When DATA01=FFh (Stop), mode and value are not referenced.

  - id: lens_memory_control
    label: Lens Memory Control
    kind: action
    command: "02h 1Eh 00h 00h 01h <DATA01> <CKS>"
    response_success: "22h 1Eh <ID1> <ID2> 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: operation
        type: integer
        description: "00h=MOVE, 01h=STORE, 02h=RESET"
    notes: "Response DATA02: 00h=success, FFh=error."

  - id: reference_lens_memory_control
    label: Reference Lens Memory Control
    kind: action
    command: "02h 1Fh 00h 00h 01h <DATA01> <CKS>"
    response_success: "22h 1Fh <ID1> <ID2> 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: operation
        type: integer
        description: "00h=MOVE, 01h=STORE, 02h=RESET"
    notes: Controls the profile number set via lens_profile_set.

  - id: lens_memory_option_set
    label: Lens Memory Option Set
    kind: action
    command: "02h 21h 00h 00h 02h <DATA01> <DATA02> <CKS>"
    response_success: "22h 21h <ID1> <ID2> 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: target
        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>"
    response_success: "22h 27h <ID1> <ID2> 02h <DATA01> <DATA02> <CKS>"
    params:
      - name: profile_number
        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>"
    response_success: "21h 98h <ID1> <ID2> 01h <DATA01> <CKS>"
    params:
      - name: operation
        type: integer
        description: "01h=freeze on, 02h=freeze off"

  - id: eco_mode_set
    label: Eco Mode Set
    kind: action
    command: "03h B1h 00h 00h 02h 07h <DATA01> <CKS>"
    response_success: "23h B1h <ID1> <ID2> 02h 07h <DATA01> <CKS>"
    params:
      - name: eco_mode
        type: integer
        description: "Eco mode value - model-specific, see appendix"

  - id: projector_name_set
    label: Projector Name Set
    kind: action
    command: "03h B1h 00h 00h 12h 2Ch <DATA01>-<DATA16> 00h <CKS>"
    response_success: "23h B1h <ID1> <ID2> 02h 2Ch <DATA01> <CKS>"
    params:
      - name: name
        type: string
        description: "Projector name up to 16 bytes"

  - id: pip_pbp_set
    label: PIP/Picture by Picture Set
    kind: action
    command: "03h B1h 00h 00h 03h C5h <DATA01> <DATA02> <CKS>"
    response_success: "23h B1h <ID1> <ID2> 03h C5h <DATA01> <DATA02> <CKS>"
    params:
      - name: target
        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: "MODE: 00h=PIP, 01h=PbP; POSITION: 00h=TL, 01h=TR, 02h=BL, 03h=BR; sub input values model-specific"

  - id: edge_blending_set
    label: Edge Blending Set
    kind: action
    command: "03h B1h 00h 00h 03h DFh 00h <DATA01> <CKS>"
    response_success: "23h B1h <ID1> <ID2> 03h DFh 00h <DATA01> <CKS>"
    params:
      - name: value
        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>"
    response_success: "23h C9h <ID1> <ID2> 03h 09h <DATA01> <DATA02> <CKS>"
    params:
      - name: input_terminal
        type: integer
        description: "Input terminal code - see appendix"
      - name: setting
        type: integer
        description: "00h=terminal specified in DATA01, 01h=BNC, 02h=COMPUTER"

Feedbacks

feedbacks:
  - id: error_status
    label: Error Status
    type: binary_flags
    command: "00h 88h 00h 00h 00h 88h"
    response_success: "20h 88h <ID1> <ID2> 0Ch <DATA01>-<DATA12> <CKS>"
    description: "12 bytes of error bit flags. Bit=0 normal, Bit=1 error. Covers cover, fan, temperature, lamp, power, formatter, FPGA, mirror cover, interlock, lens, iris errors."

  - id: information
    label: Projector Information
    type: composite
    command: "03h 8Ah 00h 00h 00h 8Dh"
    response_success: "23h 8Ah <ID1> <ID2> 62h <DATA01>-<DATA98> <CKS>"
    description: "98 bytes: projector name (1-49), lamp usage time in seconds (83-86), filter usage time in seconds (87-90)."

  - id: filter_usage
    label: Filter Usage Information
    type: composite
    command: "03h 95h 00h 00h 00h 98h"
    response_success: "23h 95h <ID1> <ID2> 08h <DATA01>-<DATA08> <CKS>"
    description: "Filter usage time in seconds (1-4), filter alarm start time in seconds (5-8). -1 if undefined."

  - id: lamp_information
    label: Lamp Information
    type: composite
    command: "03h 96h 00h 00h 02h <DATA01> <DATA02> <CKS>"
    response_success: "23h 96h <ID1> <ID2> 06h <DATA01>-<DATA06> <CKS>"
    description: "DATA01 target (00h=Lamp1, 01h=Lamp2), DATA02 content (01h=usage seconds, 04h=remaining life %), DATA03-06=value."

  - id: carbon_savings
    label: Carbon Savings Information
    type: composite
    command: "03h 9Ah 00h 00h 01h <DATA01> <CKS>"
    response_success: "23h 9Ah <ID1> <ID2> 09h <DATA01>-<DATA09> <CKS>"
    description: "DATA01 target (00h=total, 01h=operation). DATA02-05 kg (max 99999), DATA06-09 mg (max 999999)."

  - id: lens_position
    label: Lens Position
    type: composite
    command: "02h 1Ch 00h 00h 02h <DATA01> 00h <CKS>"
    response_success: "22h 1Ch <ID1> <ID2> 08h <DATA01> 00h <DATA02>-<DATA07> <CKS>"
    description: "DATA01 target (00h=Zoom, 01h=Focus, 02h=ShiftH, 03h=ShiftV). Returns upper limit, lower limit, current value (16-bit each)."

  - id: lens_memory_option
    label: Lens Memory Option
    type: enum
    command: "02h 20h 00h 00h 01h <DATA01> <CKS>"
    response_success: "22h 20h <ID1> <ID2> 02h <DATA01> <DATA02> <CKS>"
    description: "DATA01 target (00h=LOAD BY SIGNAL, 01h=FORCED MUTE). DATA02: 00h=OFF, 01h=ON."

  - id: lens_information
    label: Lens Operation Status
    type: binary_flags
    command: "02h 22h 00h 00h 01h 00h 25h"
    response_success: "22h 22h <ID1> <ID2> 02h 00h <DATA01> <CKS>"
    description: "Bit flags: Bit0=lens memory, Bit1=zoom, Bit2=focus, Bit3=lens shift H, Bit4=lens shift V. 0=stopped, 1=operating."

  - id: lens_profile
    label: Lens Profile
    type: enum
    command: "02h 28h 00h 00h 00h 2Ah"
    response_success: "22h 28h <ID1> <ID2> 02h <DATA01> <DATA02> <CKS>"
    values: ["Profile 1 (00h)", "Profile 2 (01h)"]

  - id: gain_parameter
    label: Gain Parameter
    type: composite
    command: "03h 05h 00h 00h 03h <DATA01> 00h 00h <CKS>"
    response_success: "23h 05h <ID1> <ID2> 10h <DATA01>-<DATA16> <CKS>"
    description: "DATA01 target (00h=Brightness, 01h=Contrast, 02h=Color, 03h=Hue, 04h=Sharpness, 05h=Volume, 96h=Lamp). Returns adjustment status, upper/lower limits, default, current value, step widths."

  - id: setting_request
    label: Projector Settings
    type: composite
    command: "00h 85h 00h 00h 01h 00h 86h"
    response_success: "20h 85h <ID1> <ID2> 20h <DATA01>-<DATA32> <CKS>"
    description: "Base model type (1-3), sound function (4), profile number (5)."

  - id: running_status
    label: Running Status
    type: composite
    command: "00h 85h 00h 00h 01h 01h 87h"
    response_success: "20h 85h <ID1> <ID2> 10h <DATA01>-<DATA16> <CKS>"
    description: "Power status (DATA03: 00h=standby, 01h=on), cooling process, power on/off process, operation status (DATA06: 00h=standby sleep, 04h=on, 05h=cooling, 06h=standby error, 0Fh=standby power saving, 10h=network standby)."

  - id: input_status
    label: Input Status
    type: composite
    command: "00h 85h 00h 00h 01h 02h 88h"
    response_success: "20h 85h <ID1> <ID2> 10h <DATA01>-<DATA16> <CKS>"
    description: "Signal switch process, signal list number, selection signal types 1 & 2, test pattern display, content displayed."

  - id: mute_status
    label: Mute Status
    type: composite
    command: "00h 85h 00h 00h 01h 03h 89h"
    response_success: "20h 85h <ID1> <ID2> 10h <DATA01>-<DATA16> <CKS>"
    description: "Picture mute, sound mute, onscreen mute, forced onscreen mute, onscreen display (each 00h=Off, 01h=On, FFh=not supported)."

  - id: model_name
    label: Model Name
    type: string
    command: "00h 85h 00h 00h 01h 04h 8Ah"
    response_success: "20h 85h <ID1> <ID2> 20h <DATA01>-<DATA32> <CKS>"
    description: "Model name as NUL-terminated string (up to 32 bytes)."

  - id: cover_status
    label: Cover Status
    type: enum
    command: "00h 85h 00h 00h 01h 05h 8Bh"
    response_success: "20h 85h <ID1> <ID2> 01h <DATA01> <CKS>"
    values: ["Normal / cover opened (00h)", "Cover closed (01h)"]

  - id: information_string
    label: Information String
    type: composite
    command: "00h D0h 00h 00h 03h 00h <DATA01> 01h <CKS>"
    response_success: "20h D0h <ID1> <ID2> LEN <DATA01> 01h <DATA02>-<DATA??> <CKS>"
    description: "DATA01: 03h=horizontal sync freq, 04h=vertical sync freq. Returns label/info NUL-terminated string."

  - id: eco_mode
    label: Eco Mode
    type: enum
    command: "03h B0h 00h 00h 01h 07h BBh"
    response_success: "23h B0h <ID1> <ID2> 02h 07h <DATA01> <CKS>"
    description: "Eco mode value - model-specific, see appendix."

  - id: projector_name
    label: Projector Name
    type: string
    command: "03h B0h 00h 00h 01h 2Ch E0h"
    response_success: "23h B0h <ID1> <ID2> 12h 2Ch <DATA01>-<DATA17> <CKS>"
    description: "Projector name as NUL-terminated string (up to 17 bytes)."

  - id: mac_address
    label: MAC Address
    type: string
    command: "03h B0h 00h 00h 02h 9Ah 00h 4Fh"
    response_success: "23h B0h <ID1> <ID2> 08h 9Ah 00h <DATA01>-<DATA06> <CKS>"
    description: "6-byte MAC address."

  - id: pip_pbp_status
    label: PIP/Picture by Picture Status
    type: composite
    command: "03h B0h 00h 00h 02h C5h <DATA01> <CKS>"
    response_success: "23h B0h <ID1> <ID2> 03h C5h <DATA01> <DATA02> <CKS>"
    description: "DATA01 target (00h=MODE, 01h=POSITION, 02h=SUB INPUT 1, 09h=SUB INPUT 2, 0Ah=SUB INPUT 3). Returns current setting."

  - id: edge_blending_status
    label: Edge Blending Status
    type: enum
    command: "03h B0h 00h 00h 02h DFh 00h 94h"
    response_success: "23h B0h <ID1> <ID2> 03h DFh 00h <DATA01> <CKS>"
    values: ["OFF (00h)", "ON (01h)"]

  - id: base_model_type
    label: Base Model Type
    type: composite
    command: "00h BFh 00h 00h 01h 00h C0h"
    response_success: "20h BFh <ID1> <ID2> 10h 00h <DATA01>-<DATA15> <CKS>"
    description: "Base model type and model name."

  - id: serial_number
    label: Serial Number
    type: string
    command: "00h BFh 00h 00h 02h 01h 06h C8h"
    response_success: "20h BFh <ID1> <ID2> 12h 01h 06h <DATA01>-<DATA16> <CKS>"
    description: "Serial number as NUL-terminated string (up to 16 bytes)."

  - id: basic_information
    label: Basic Information
    type: composite
    command: "00h BFh 00h 00h 01h 02h C2h"
    response_success: "20h BFh <ID1> <ID2> 10h 02h <DATA01>-<DATA15> <CKS>"
    description: "Operation status, content displayed, signal types, display signal type, video/sound/onscreen mute, freeze status."

Variables

variables:
  - id: brightness
    label: Brightness
    type: integer
    query_command: "03h 05h 00h 00h 03h 00h 00h 00h 0Bh"
    set_command: "03h 10h 00h 00h 05h 00h FFh <DATA02> <DATA03> <DATA04> <CKS>"
    description: "Picture brightness adjustment"

  - id: contrast
    label: Contrast
    type: integer
    query_command: "03h 05h 00h 00h 03h 01h 00h 00h <CKS>"
    set_command: "03h 10h 00h 00h 05h 01h FFh <DATA02> <DATA03> <DATA04> <CKS>"

  - id: color
    label: Color
    type: integer
    query_command: "03h 05h 00h 00h 03h 02h 00h 00h <CKS>"
    set_command: "03h 10h 00h 00h 05h 02h FFh <DATA02> <DATA03> <DATA04> <CKS>"

  - id: hue
    label: Hue
    type: integer
    query_command: "03h 05h 00h 00h 03h 03h 00h 00h <CKS>"
    set_command: "03h 10h 00h 00h 05h 03h FFh <DATA02> <DATA03> <DATA04> <CKS>"

  - id: sharpness
    label: Sharpness
    type: integer
    query_command: "03h 05h 00h 00h 03h 04h 00h 00h <CKS>"
    set_command: "03h 10h 00h 00h 05h 04h FFh <DATA02> <DATA03> <DATA04> <CKS>"

  - id: volume
    label: Volume
    type: integer
    query_command: "03h 05h 00h 00h 03h 05h 00h 00h <CKS>"
    set_command: "03h 10h 00h 00h 05h 05h 00h <DATA01> <DATA02> <DATA03> <CKS>"

Events

# UNRESOLVED: source does not document unsolicited events or push notifications

Macros

# UNRESOLVED: source does not describe multi-step macro sequences

Safety

confirmation_required_for: []
interlocks: []
# UNRESOLVED: source mentions interlock switch in error status (DATA09 Bit1) but no interlock
# procedures documented. Power on/off commands block other commands during transitions.

Notes

All commands use binary hex frames with a trailing checksum byte. Checksum is the low-order byte of the sum of all preceding bytes.
Commands include model-dependent parameters ID1 (control ID) and ID2 (model code).
Error responses use prefix byte A0h/A1h/A2h/A3h (depending on command length) and carry ERR1/ERR2 error codes.
Multiple baud rates supported (115200, 38400, 19200, 9600, 4800) — default not stated.
TCP control uses port 7142 on wired LAN.
Some models cannot receive commands in standby mode over LAN.
Lamp usage time and filter usage time update at one-minute intervals despite being returned in seconds.
Picture/sound/onscreen mute automatically cancels on input switch or signal switch.
Appendix tables for input terminal codes, aspect values, and eco mode values are model-specific and do not include PA804UL entries.

Provenance

source_domains:
  - sharpdisplays.eu
source_urls:
  - https://www.sharpdisplays.eu/p/download/cp/Products/Projectors/Shared/CommandLists/NEC-ExternalControlManual-english.pdf
retrieved_at: 2026-04-29T10:09:37.839Z
last_checked_at: 2026-06-02T22:14:15.589Z

Verification Summary

verdict: verified
checked_at: 2026-06-02T22:14:15.589Z
matched_actions: 28
action_count: 28
confidence: medium
summary: "All 28 spec actions traced to source (dip-safe re-verify). (17 unresolved item(s) noted in Known Gaps.)"

Known Gaps

- "PA804UL-specific input terminal codes not listed in the appendix — appendix covers other NEC models only"
- "PA804UL-specific eco mode values not listed in the appendix — appendix covers other NEC models only"
- "PA804UL-specific aspect values not listed in the appendix — appendix covers other NEC models only"
- "standby mode settings for receiving commands — PA804UL not listed in the standby mode table"
- "source lists 115200/38400/19200/9600/4800 bps - default not stated"
- "flow control not explicitly stated; communication mode is full duplex"
- "source does not document unsolicited events or push notifications"
- "source does not describe multi-step macro sequences"
- "source mentions interlock switch in error status (DATA09 Bit1) but no interlock"
- "PA804UL-specific input terminal hex codes not in appendix"
- "PA804UL-specific aspect mode values not in appendix"
- "PA804UL-specific eco mode values not in appendix"
- "PA804UL standby mode settings for serial/LAN command reception not in table"
- "flow control setting not explicitly stated for serial"
- "default baud rate not stated (multiple supported)"
- "command timing / minimum inter-command delay not documented"
- "maximum concurrent connection count for TCP not documented"

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

Sharp-NEC PA804UL Series Control Spec