REXGEN 1Specification
REXGEN 1: overview and specifications
This series covers REXGEN 1 in three guides: this overview, the quick start guide and the pinouts and installation guide. This guide covers what the logger does, its full specifications and the safety rules to follow before you fit it.
What REXGEN 1 does
REXGEN 1 is a pocket-sized logger for one CAN bus. It records the bus to soldered memory, sleeps on the vehicle battery between journeys and doubles as a J2534 pass-thru interface on the bench. You configure it and read its files with REXDESK, which is free.
- One CAN channel: classic CAN 2.0 A and B up to 1 Mbit/s, raw CAN and SAE J1939.
- Works as a J2534 pass-thru interface over micro USB 2.0. See REXGEN: use the logger as a J2534 pass-thru interface.
- Live trace of raw CAN frames and J1939 in REXDESK.
- 8 GB of soldered eMMC. Cyclic logging is on by default. Once the eMMC is full, the logger overwrites the oldest file first (FIFO).
- Sleep modes with wake-up on CAN and low power draw.
- Device locking with RSA. AES log encryption is available as a licensed feature on request.
- XML-based configuration with a published schema. See REXGEN XML configuration: how it fits together.
- Advanced trigger and filter conditions, and advanced CAN bit timing.
- CAN error frame logging.
- One status LED and an IP65 enclosure.
- Exports to ASAM MDF4, MATLAB, CSV, ASC, BLF, TRC and RXD.
- The REXGEN Open API handles logger management and live data from your own code. REXLIBRARY converts files.
| Part number | eMMC storage | CAN channels |
|---|---|---|
INF2109.01 |
8 GB | 1 |
What it records
REXGEN 1 records CAN data in the field and on the bench through its one CAN interface. It supports every standard CAN bit rate. In REXDESK you can also set a custom bit rate, change the advanced bit timing and add CAN and J1939 filters. Triggers on CAN IDs, parameter values and J1939 DM1 messages start or stop logging. Everything it records goes to the soldered eMMC.
- CAN logging: yes. See REXDESK: record CAN, CAN FD and LIN.
- J2534 pass-thru: yes.
- Filters: yes. See REXDESK: filter CAN IDs, J1939 PGNs and UDS requests.
- Triggers: yes. See REXDESK: start and stop logging with triggers.
Watch: Set up REXGEN series to record CAN data (1:19)
Technical specifications
| Function | REXGEN 1 |
|---|---|
| CAN interface | 1 × CAN, ISO 11898-1, up to 1 Mbit/s. CAN 2.0 part A and B. Meets ISO 11898-2:2016 and ISO 11898-5:2007 physical layer standards. |
| Maximum message rate | 20,000 messages per second |
| Identifiers | 11-bit (CAN 2.0A) and 29-bit (CAN 2.0B) |
| Supported protocols | CAN monitoring of raw CAN signals, SAE J1939 |
| CAN error frames | Logs bit-stuffing, form, CRC, bit and acknowledgement errors |
| Retransmission | Configurable retransmission of frames that lost arbitration or were disturbed by errors |
| Prescaling | Record frames by time (every X ms) or by data (when byte X or Y changes) |
| Transmit | Periodic transmit lists per channel, for example OBD-II requests, with linked messages |
| Bit rate | Auto-detected or set manually |
| Triggering | Trigger on a CAN ID, a parameter value or a DM1 counter |
| Filters | 200 regular or extended ID filters per channel (range, acceptance) |
| Real-time clock | Synchronised from a CAN message or from REXDESK |
| Function | REXGEN 1 |
|---|---|
| Storage | 8 GB soldered eMMC, FIFO logic once full |
| File system | FAT32. Log files are read through REXDESK. |
| File split | By size (10 to 512 MB), by time period, or both |
| Cyclic logging | On by default |
| Unique device ID | Each logger has a globally unique ID, so log file names never clash |
| PC interface | Micro USB 2.0, for logger mode and J2534 |
| J2534 | Yes, pass-thru enabled |
| LEDs | 1 |
| Export formats | ASAM MDF (.mf4), CSV, MATLAB, ASC, BLF, TRC, RXD |
| Configuration | REXDESK, XML based |
| Firmware | Digitally signed updates, free |
| Security | RSA device locking. AES log encryption is available as a licensed feature on request. |
| Origin | Designed and tested in the United Kingdom |
Download the REXGEN 1 spec sheet (PDF, 53 KB)
Electrical data
| Item | Value |
|---|---|
| Supply through the D-Sub (OBD) | +5 V to +27 V |
| Maximum supply voltage | +34 V |
| Supply through USB | +4.5 V to +5.5 V |
| CAN transceiver protection | ±58 V bus fault protection, thermal shutdown, ±12 V common-mode input, TXD dominant timeout so a fault cannot block the network, under-voltage protection |
| Supply protection | Reverse voltage protection on the CAN-bus supply |
| Current while logging | 87 mA at 12 V |
| Current in sleep | Under 17 mA |
| Current in deep sleep | Under 2 mA |
| Power saving | Wake-up on CAN, power-down mode, sleep modes |
| Power safety | Power-safe logging: no file corruption when power is disconnected or the logger sleeps |
Dimensions and physical data
| Item | Value |
|---|---|
| Dimensions | 100 × 73.5 × 27.4 mm |
| Weight | 164 g |
| Enclosure | PC and ABS, four mounting holes and screws |
| IP rating | IP65 |
| Operating temperature | -40 °C to +85 °C |
| Humidity | 90% maximum |
Intended use
REXGEN 1 is a compact data logger and J2534 pass-thru interface for automotive and industrial use. It is designed to:
- Work as a J2534 pass-thru interface
- Log a CAN bus continuously for hours
- Save the data to its soldered eMMC
It suits harsh environments that call for IP65 protection, and it mounts in a vehicle or machine. For pinouts, the LED and mounting, see REXGEN 1: pinouts, LED and installation.
In the box
- REXGEN 1 (
INF2109.01) with its integrated 9-way D-Sub lead - Micro USB cable
- Four mounting screws
REXDESK, the configuration and data retrieval software, is free. Download it from software downloads.
Safety and liability
Read these rules before you install or handle the logger. They apply to every guide in this series.
- Have the logger installed, connected and commissioned by a qualified professional, following all applicable safety rules.
- Disconnect the logger completely before you handle it. Disconnect any separately supplied output load circuits too.
- Do not connect the housing to ground externally. This disables the reverse voltage protection of the supply. A reverse voltage then destroys the supply circuits.
- Fit every connector with its plug and any protection caps it needs to keep IP65 protection.
- Never immerse the logger in water or any other liquid.
- Do not use the logger without its enclosure.
- Use only components from the starter kits or the accessories supplied.
- Only the manufacturer may repair the logger.
- Keep substances that contain solvents away from the label.
Influx Technology accepts no liability for damage caused by normal wear, installation errors or faults in operation or maintenance. The same applies when the logger, its accessories or the software are modified without Influx Technology's prior approval.
Support and downloads
REXGEN 1 comes with a 12 month warranty. For the warranty terms, see our terms of service. For help, use technical support or contact us. For the latest REXDESK, drivers and firmware, see Software downloads: installers, drivers and firmware.
Next: REXGEN 1 quick start guide.
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