Racelogic USER GUIDE Bedienungsanleitung PDF herunterladen (Seite 17)

Page | 17 Revision 1.4 15 January

2015

The log file is recorded in the same folder as the RF data and has a .TXT file extension.

During recording, the CAN controller listens to the CAN bus and stores incoming data. LabSat 3 will transmit

acknowledge pulses on the bus in response to correctly received data unless the ‘Silent Record’ option is

ticked. The ability to transmit acknowledge pulses in ‘LOG FILE’ mode means that it is possible to record

data directly from inertial sensors or other devices with a CAN bus output.

During the replay of data recorded in the ‘LOG FILE’ mode, LabSat scans through the log file, sending the

CAN data at the time intervals indicated by the time-stamp. Because CAN data is transmitted using an

active CAN Bus controller, LabSat will arbitrate by listening to the current bus state and only transmitting

the data between other messages that may be sent from other nodes.

Filtering CAN frames

Filtering of selected CAN frames in the LOG FILE mode can be achieved by creating a file called

CANFILTER.TXT in the root directory of the current SD/HDD. An example of the CANFILTER.TXT file is shown

below.

The first two statements automatically configure the CAN Bus baud rates:-

CAN1: 500.00K – this means 500KBit/s

CAN2: 47.06K – this means 47.06KBit/s

The next set of lines, configure the required Identifiers for each channel. The format is:-

<CHANNEL><IDENTIFIER><MASK>, for example 1 0x3F1 0x7FF means that channel 1 will allow recording of

identifier 0x3F1. The mask value of 0x7FF is a bit-wise mask that is used by the CAN controller to allow a

single identifier of a range of identifiers to be recorded. If the mask value was set to 0x7F0, then identifiers

from 0x3F0 to 0x3FF would be recorded, not just 0x3F1. Up to 16 identifiers can be defined for each CAN

channel.

Warning

The LabSat 3 CAN Bus interface may corrupt existing CAN Bus signals

when used incorrectly. It is up to the user to ensure that the LabSat

and interface are configured correctly and that they are used in a

safe environment where corruption of CAN Bus signals cannot cause

injury or harm. Racelogic accepts no responsibility for damage or

injury caused by the use of LabSat or the CAN Bus interface.

CAN1: 500.00K

CAN2: 47.06K

1 0x3F1 0x7FF

1 0x7E8 0x7FF

2 0x10751023x 0x1FFFFFFF

1 0x10751023x 0x1FFFFFFF

-- End of configuration file

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 26 27

Keine Kommentare

Racelogic USER GUIDE Bedienungsanleitung Seite 17