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Chapter 8 Accessory
8.1 LKA101 PROFIBUS-DP Bus Connector
Module
LKA101 is the PROFIBUS-DP bus connector module. It switches the redundancy DP signal of the
previous backboard to the next one. In the meantime, it also provides the active terminal matching
resistance for the PROFIBUS-DP bus. The matching resistance is selected via the DIP switch. If the
connector is at the end point of the bus, it must be connected to the matching resistance.
The DB9 plug of LKA101 matches the DB9 receptacle on the backboard that is used as the DP
communication extension interface. Each LKA101 is installed with one receptacle.
8.1.1 Appearance and Size
8.1.1.1 Appearance
Figure 8-1 External View of LKA101 Module
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