720240 CAN Bus Monitoring Module (DISCONTINUED)
Use the CAN bus monitor module to decode the CAN-Bus signals and display information on physical data like engine temperature, vehicle speed and brake-pedal position as analog waveforms and compare this with the data coming from real sensors.
To be used with DL850V & DL850EV ScopeCorder Vehicle Edition only.
The module interprets the CAN protocol, monitors communication data on the bus, and displays the time series trend waveforms. It is connected as an ISO-11898 CAN bus node, able to read data frames communicating on the bus. By combining it with other input modules, it can simultaneously measure communication data on the CAN bus, voltage and temperature, sensor signals and other changes in analog data over time, as well as ECU (Electronic Control Unit) control block signals. These data can be displayed as waveforms or saved as files. All related data in the system can be interpreted, enabling evaluation of the overall CAN system.
CAN Frames
This module can monitor data frames defined by the CAN protocol. It supports both standard and extended format.
- Data Frame - A frame that outputs data on the CAN bus
CAN Data Monitoring Method
Examples of CAN frames and physical data
With CAN data frames, multiple data (physical data) are carried and received under a single ID.
The model 720240 CAN Bus Monitoring Module acquires (extracts) identifiers for data fields defined as channel settings (for example, "oil pressure" or "RPM"), then re-samples the data and converts it to time series data.
Data sections can be specified on up to 16 signals per port for a total of up to 32 channels per module. Both standard (11-bit) and extended (29-bit) message IDs can be specified, and arbitrary locations and bit lengths can be specified for extraction.
Sampled Data and Displayed Waveforms
Extracted data is stored in memory at up to 100 ks/s while simultaneously being displayed on screen as trends.
Relationship between sampling data and displayed waveform(s)
Using the CANdb Database
You can use Vector Informatik's CANdb database file (.dbc format) to indicate the field being monitored (acquired). Using Yokogawa's free Windows PC software, "Symbol Editor," you can convert a CANdb (.dbc format) file to our proprietary symbol definition file (.sbl format) and import that file onto the DL850V.
Outputting Frame Data
Single specified (defined) data frames or remote frames can be output (manually, at desired timing).
720240 CAN Bus Monitor Module
| Input Ports | 2 |
|---|---|
| Input Type | Isolated - (across port and main unit, across each port) |
| Input Connector | D-Sub 9-pin (male) |
| Input Channels | 60-signal/port |
| Maximum Sample Rate | 100kS/s (60-CH x 1 kS/s per port) |
| Bit Rate | 10k, 20k, 33.3k, 50k, 62.5k, 66.7k, 83.3k, 125k, 250k, 500k, 800k,1Mbps |
| Supported Protocol | Physical layer: ISO-11898 |
| (High Speed Communication) | |
| CAN in Automation: CAN2.0B | |
| (Standard & extended massage format) | |
| Terminator | Built-in, it is switchable On and Off per port. |
| Endian | Little or Big selectable |
| LED Display | CAN Ch1: TERM on the panel |
| CAN Ch2: TERM on the panel | |
| Channel Setting | Message ID (Standard or Extended) |
| Extraction Position | |
| Bit Length (Max 16-bit) | |
| Select the Endian (little or big) | |
| Convert physical value | |
| Output Function | Single shot |
| Specified ID (Data) can be outputted manually. | |
| Allowable Voltage Range | -3 to 10V |
| Maximum allowable common mode voltage (1kHz or less) | 42 V (DC+ACpeak) (CAT I and CAT II, 30 Vrms) |
Drawings
- 720240 CAN Bus Monitor Module (200 KB)