Lenze 8400 BaseLine D - Manual (Page 116)

6 I/O terminals
6.3 User-defined terminal assignment
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Lenze · 8400 BaseLine D · Reference manual · DMS 5.5 EN · 01/2014 · TD05
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6.3.1 Source-destination principle
The I/O configuration of the input and output signals is carried out according to the source/desti-
nation principle:
• A connection always has a direction and therefore always has a source and a target.
• The input signals of the application are logically linked via configuration parameters to the out-
put signals of system blocks which represent the device input terminals.
• The inputs of system blocks that represent the device output terminals are logically to output
signals of the application via configuration parameters.
The following graphic illustrates the source/destination principle:
[6-2] Source-destination principle
Note the following:
• A device input terminal can be logically linked to several inputs of the application.
• Each input of the application can only be logically linked to one input signal.
• An output of the application can be logically linked to several device output terminals.
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