The compact design of the bus connections from the Systeme Helmholz GmbH makes them suitable for use in all Siemens CPU types.
A slide switch sets whether the connector will be used as a node or end of segment. The switch can also be operated when the connector is plugged. The switch setting is clearly visible.
The connector must be used as a node („OFF“) when the incoming bus (A1, B1) and the outgoing bus (A2, B2) are to be interconnected. This deactivates the terminating resistors.
The connector must be set as a segment end (“ON”), on the first and last (extreme) stations of the segment. In that case the terminating resistors are connected on the incoming bus, the outgoing bus is disconnected.
