55M3500MNE rev. E
Telescopic cranes with derrick pressure sensors Calibration Manual i3500
44
3.0 CANBUS INTERFACES BOARD
Every electronic card must be supplied with a voltage between 12 and 24 volts DC.
Every interface board has its own CANbus physical address. It is configurable using
switches 1 to 3. The table below shows how to position these switches to select an
address.
Address
Switches
1
2
3
0
OFF
OFF
OFF
1
ON
OFF
OFF
2
OFF
ON
OFF
3
ON
ON
OFF
4
OFF
OFF
ON
5
ON
OFF
ON
6
OFF
ON
ON
7
ON
ON
ON
Voltage levels for different sensors are shown in section 3,5.
Every interface board has a termination resistance on the CANBus
network. This resistance can be activated when putting a jumper on the
connector header identified as ‘END’. Note that only the last card on
the CANbus requires a termination resistance activated, that is one at
each end of the network.
3.1
Angle/length and ATB sensor interface board
3.1.1 Errors detection
For the length sensor:
Maximum voltage for length sensor is 4.80V. If the voltage of the length sensor
exceeds 4.80V, it will mean that either the length sensor is not installed on this card or
that there is an open circuit on the card (eg. cut wire).
Acceptable range: Min: 39 bits (0.19Volts)
Max: 985 bits (4.81V)
In the diagnostic mode, the system will display 1024 if a length value received in bits is
greater than 1023 and will display 2 for the
atb if a received value is greater than 1.
