143Connection
HBMQuantumX
6.11.29 CANbus
The following modules enable CAN messages to be acquired: Channel 1 of MX840 or
MX840A. The following modules enable CAN messages to be acquired and sent: MX471,
MX840A (only module internal measurands). QuantumX Assistant enables a dbc data file to
be created.
7
6
CAN-High
CAN-GND
1
5
6
10
11
15
Adjustable sensor supply: : Pin 12: 5 V ... 24 V
(does not apply for MX471) Pin 11: 0 V
MX471
Chanel 1
SubHD-15pol.
MX840 / MX840A
7
2
1
5
6
SubD-9pol.
9
8
CAN-Low
6
Note
Ensure correct termination with termination resistors is made, as shown in Fig.6.1.
The MX840 does not have any termination, the MX471 features internal termination
that can be activated by software.
Node
1
. . . . . .
Node
n
Termination
resistance
120Ω
Termination
resistance
120Ω
Fig.6.17: Bus termination resistors
The adapter cable 1-KAB418 is used to connect the D-SUB-15HD device connectors of the
MX840 to standard CAN plugs (D-SUB-9).
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