Lenze 8400 TopLine - Manual (Page 422)

7 I/O terminals
7.6 User-defined terminal assignment
422
Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
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7.6.1 Source-destination principle
The I/O configuration of the input and output signals is carried out according to the
source/destination principle:
• A connection always has a direction and therefore always has a source and a target.
• The inputs signals of the technology application are logically linked to the outputs of system
blocks which represent the device input terminals.
• The inputs of system blocks that represent the device output terminals are logically linked to
output signals of the technology application.
The following graphic illustrates the source/destination principle:
[7-7] Source-destination principle
Note the following:
• An equipment input terminal can be logically linked to several inputs of the application block.
• Every input of the application block can only be logically linked to one input signal.
• An output of the application block can be logically linked to several device output terminals.
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