CoDeSys on CCP XS for Bromma Conquip - Research

Student
Joel Ek
Supervisor at CC-Systems
Fredrik Löwenhielm
Dok Nr
1.0
Date
2006-08-08
Rev
PA1
Säk klass
F
Filname
Thesis.doc
CODESYS ON CCP XS FOR BROMMA CONQUIP
PRELIMINARY STUDIES
In order to get an understanding of how to carry out the thesis I required some background
information. From Bromma Conquip AB, the company for which the thesis is performed towards
I needed information about the system they are using today. CCS developed this system so this
was of course not a problem.
A better understanding of <strong>CoDeSys</strong> was also essential when this tool was completely new to me.
So the preliminary studies have been performed by reading documents and user manuals for the
systems. Tests of the different software tools, both those used in Bromma Conquips system and
<strong>CoDeSys</strong> have also been conducted.
2.1 SCS 2
The second generation of the Spreader Communication System (SCS 2 ) is the core in a Bromma
Conquip spreader. The hardware controlling the spreader is divided into several nodes and
resides on both the spreader and the crane (fig.4), the number of nodes used depend on the
spreader. At least one is required, the Master that makes all the calculations and decisions for the
spreader, it is located on the actual spreader. Then you can connect up to seven other nodes on
the spreader and up to four nodes on the crane. These slave 7 nodes act as remote I/O 8 to the
master.
Crane
Slave 1 Slave IO connected to
sensors and
actuators
Slave 1 Master
Slave 1 Slave 1
Spreader
Figure 4:
Graphical overview of the SCS 2 system
The behaviour of the system is described by a number of software components and connections.
The nodes on the spreader have I/O directly connected to the sensors and actuators on the
spreader.
A crane node could be interfacing the control system or a monitoring screen.
The communication between the nodes is made through a Controller Area Network (CAN)
network. It is a multi master network that connects several electrical units. A message send on
7
The slave sends its input values to the Master and then set output values according to received data from the Master.
8
I/O: Input and Output
12 (55)