SKF Copperhead Transmitter Unit CMPT CTU 10-25
CTU CAN-bus
Instruction Manual
CTU CAN-bus
10
CTU CAN-bus Connection
Multiple CTUs can be connected together to allow an efficient transfer of measurement
values over a digital communication bus. CAN-bus (Controller Area Network) is an
industry standard and is used in many plant automation applications. As many as 64
CTU can simultaneously cooperate on the bus.
Characteristics:
Frame format: CAN 2.0B
CAN massage ID (hex): Uses 12000000 to 13FFFFFF
Communication speed: 250 kBps
Maximum bus length: 250 meters (depends on cable quality, number of nods,
stub length, etc…)
CTU has an integrated 120 Ω resistor which can be disabled by removing the jumper
shown in Figure 10-7, below.
Figure 10-7: Location of jumper which can be removed to disable resistor
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