Step 4: Check the value at the inputs of the DCC block
The outputs of the function block are interconnected with unit-global variables. The inputs and
outputs of the DCC blocks from the DCC charts are interconnected with the unit-global
variables. The variables to be traced are connected with the Targets block.
Figure 5-38
DCC blocks
The three variables arrive at the block exactly as specified by the SIMATIC S7. Since the
signals are further processed in the DCC block, they cannot be traced any further.
To trace the path back to the S7, you can select a variable at the block output and trace it back
in the same manner.
The technology object has only the following variables supplied by the AddOn technology or
sent back from the technology object.
AddOn technology → technology object
● TO_Trolley_1.Defaultmotionin.velocity
● TO_Hoist_1.Defaultmotionin.velocity
Technology object → AddOn technology
● TO_Trolley_1.positioningstate.actualposition
● TO_Hoist_1.positioningstate.actualposition
● TO_Trolley_1.motionstatedata.actualvelocity
● TO_Hoist_1.motionstatedata.actualvelocity
Configuration
5.17 Communication tests for the STS application project
SC integrated STS, GSU
144
Operating Instructions, 07/2019, A5E48271265B AA