Wago 750-960 Communication Bus Connectors
Fieldbus Connector PROFIBUS, with D-sub male connector, 9-pole
The fieldbus connector links a PROFIBUS device to a PROFIBUS line.
The fieldbus connector has the following features:
For the first and last station on the bus, the switch must be set to ON (terminating resistor activated, outgoing bus line disconnected).
Switch setting to OFF for the intermediate stations on the bus (terminating resistor deactivated).