Product introduction: Using the two network connectors provided by Siemens DP connector, you can easily connect multiple devices to the network. Both connectors have two sets of screw terminals to connect the inputs and outputs of the network. One connector provides only a CPU interface, while the other adds a programming interface. Both network connectors also have selection switches for network bias and termination bias. The internal wiring diagram of the switch in the on position does not have a terminating resistor connected to the off position. The switch connected to the connector at the end of the network should be in the open position.