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The following diagram shows an example of communication paths between the individual
components.
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Figure 2-1
Communication paths between the components
The AddOn contains a DCC library and an FB library. The functions for sway control, TLS
control and CeCOMM are stored in the DCC library with the associated blocks. Communication
with the DCC blocks and the higher-level control system takes place via the FB library and the
associated functions. The FB library was programmed in "Structured Text" (ST).
The supplied application project already contains a complete sequential control system and the
necessary interconnections between Basic Technology and AddOn technology.
2.2.2
Applications
2.2.2.1
Grab ship unloader (GSU) without camera measuring system
As a general rule, GSU cranes are not equipped with a camera measuring system. This is due
to the design of the crane and the extreme application conditions of these crane types, such as
high temperatures or extremely dusty atmospheres.
The sway control system ascertains the oscillation states using a mathematical calculation
model. A sway control system without camera measuring system is capable of eliminating most
oscillations that are caused by crane motion. However, it is not capable of suppressing
oscillations caused by external forces such as diagonal pull or wind.
A detailed description of the GSU functions can be found in Chapter Special aspects of GSU
System description
2.2 System overview
SC integrated STS, GSU
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Operating Instructions, 07/2019, A5E48271265B AA