WIKA Mobile Control LP  
1540 Orchard Drive 
Chambersburg, PA 17201 
 
qSCALE maestro (PLC v01.00.00) Service Manual / Issue E (HMI v1.0.0) 04/2018 / rbm.
 
Service : (717) 217-2250 
Parts / Sales : (717) 217-2269 
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HIRSCHMANN MCS 
6.10 CAN Bus Communications 
 CAN Bus - a serial bus protocol to connect individual systems and sensors as an alternative to con-
ventional multi-wire cables. It allows crane components to communicate on a single bus: a dual-wire 
networked data bus with speed up to 1Mbps. 
 
 
The use of a CAN Bus design allows for all nodes (sensor, controller and console) signals to be net-
worked over a common pair of cables. The signals generated by all sensors are slave signals sent with 
a digital identifier over common cables. The data transmitted is used by the controller (master). The 
data can be interpreted, and information and controls sent from the controller to provide crane safety 
functions. Each node has a unique identifier. This allows for a common pair of shielded wires (the bus) 
to carry all signals.