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RNET_CONFIG_FILE_FORMAT.md

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R-Net Configuration File Format (.R-net)

Analysis of R-Net Programmer configuration export files.

Overview

.R-net files are binary configuration exports from the R-Net Programmer software. They contain complete wheelchair configuration including:

  • Speed profiles and motor limits
  • Input mode assignments
  • Seating/actuator functions
  • Device serial associations

File Structure

Offset Size Content Description
0x0000 32 Header Magic 03000000, version, checksum
0x0020 224 Padding XOR pattern 9d82c7a3f28db441 repeated
0x0100 96 Metadata Configuration metadata, timestamps
0x0160 240 Mode Profiles Input mode assignments
0x0250 944 Speed Profiles Named speed profiles (5-8 per chair)
0x0600 1536 Motor Params Current limits, acceleration curves
0x0C00 1024 Seating Actuator/seating function config
0x1000 2048 Extended Per-mode detailed settings
0x1800+ Varies Additional Device-specific options

Typical file sizes: 3,795 - 7,979 bytes

Header (0x0000-0x001F)

03 00 00 00 1f 1c 03 00 00 00 00 00 00 01 03 00
00 00 02 00 00 00 03 00 00 00 [checksum 4 bytes]
  • Bytes 0-3: Magic 03000000
  • Bytes 24-27: File checksum/timestamp (varies per save)

Mode Profiles (0x0160-0x024F)

Mode profiles define input device assignments:

[16-byte name, padded with spaces] + ">@<" + [control bytes]

Standard Modes

Mode Description
Drive Primary joystick control
Seating Seat position controls
Bluetooth BT module input
Bluetooth2 Secondary BT
iDevice iOS device input
IR Mode Infrared input
Programming R-Net Programmer mode
Mouse Control Mouse emulation
Environmental ECU control

Speed Profiles (0x0250-0x05FF)

Speed profiles define drive behavior presets:

[4-byte prefix] + [16-byte name] + [config bytes]

Prefix Pattern

  • 64 64 64 64 ('dddd') - Standard prefix
  • 00 00 XX XX - Alternate format

Profile Names Found

Chair Profiles
V6 SLOWEST, SLOW, MEDIUM, FAST, V6AT FAST, Profile 6/7
C500/M300 Indoor, Normal, Profile 3-6
M300 Soccer Indoor, Normal, SOCCER, Profile 4-6
Alltrack idiot mode, Standard, StandardPWR, DANGEROUS, PWR-Tremor
Quickie P6 idiot mode, Medium, Fast, DIABLO!!!
M300 2022 Indoor, Normal, High Torque, Profile 4-6

Profile Configuration Bytes

Following the name, approximately 8 bytes of configuration:

Offset Description Range
+0 Max forward speed 0x00-0x64 (0-100%)
+1 Max reverse speed 0x00-0x64
+2 Acceleration 0x00-0x64
+3 Deceleration 0x00-0x64
+4-7 Turning/other varies

Motor Parameters (0x0600-0x0BFF)

Motor current and power settings per profile.

Key Offsets

Offset Description Stock 90-amp 120-amp
0x0B23 Profile 1 current limit 55 100 100
0x0B30 Profile 2 current limit 55 100 100
0x0B3D Profile 3 current limit 55 100 100
0x0B4A Profile 4 current limit 55 100 100
0x0B57 Profile 5 current limit 55 100 100

Values are 0-100 representing percentage of maximum motor current.

Stock vs Modified

Parameter Stock OEM 90-amp Mod 120-amp Mod
Base current 55% ~90% 100%
Accel limit 50% 80-100% 100%
Speed cap Profile-specific Increased Maximum
ESP Enabled Varies Often disabled

Seating Functions (0x0C00-0x0FFF)

Actuator/seating function configuration:

[20-byte function name] + [control parameters]

Function Names

  • Tilt
  • Seat Lift
  • Recline
  • Transfer Tilt
  • Leg / Leg Rest
  • Layback
  • Elevator
  • Head Rest
  • Backrest

Each function has associated:

  • Speed limits
  • Range limits
  • Safety interlocks
  • Timeout values

Serial Number Format

Serial numbers embedded in filenames:

Format Description Example
CS + 8 digits Chair Serial (legacy) CS14050871
CR + 8 digits Chair Registration (new) CR17122192

Known Serials in Collection

Serial Chair Model Notes
CS14050871 Frontier V6 Stock + 90-amp configs
CR14121385 V6 120-amp test configs
CS13093419 C500 Black Multiple mod configs
CR15070953 C500 2019 backup
CS13124566 M300 2018 SOCCER profile
CR17122192 M300 2018 2022 backup
CR14060137 Amylior Alltrack DANGEROUS profile
CS13061526 Quickie Pulse 6 DIABLO!!! profile
CR16125104 M3 Orange 2018 OEM config
CS21054090 F3 2021 First mod

Modification Analysis

90-amp Mod (V6)

Changes from stock OEM:

  • Motor current limits: 55% → 100%
  • ~70 byte-level differences
  • Maintains safety margins

120-amp Mod

More aggressive changes:

  • All current limits maxed
  • ESP (Electronic Stability) often disabled
  • Acceleration curves flattened

no-ESP Mod

Disables:

  • Electronic Stability Program
  • Anti-tip protection
  • Some speed limiting

XOR Padding Pattern

The repeated pattern 9d82c7a3f28db441 (8 bytes) fills unused space. This may be:

  • Default uninitialized value
  • Obfuscation pattern
  • Checksum seed

Count: ~20 occurrences in typical file

Creating Custom Configs

  1. Export base config from R-Net Programmer
  2. Identify relevant offsets for parameters
  3. Modify values (stay within safe ranges)
  4. Recalculate checksum if required
  5. Import back to chair

WARNING: Incorrect modifications can cause unsafe behavior. Always test with wheels off ground and maintain physical e-stop access.

Tools

Use rnet_utils.py or custom scripts to:

  • Parse config files
  • Compare OEM vs modified
  • Extract parameter values
  • Generate modification patches

See Also