Siemens SIMATIC NET PROFIBUS manual Connectivity Devices 1 DP/DP Coupler, Uses

Topologies of SIMATIC NET PROFIBUS Networks

2.5Connectivity Devices

2.5.1DP/DP Coupler

Uses

The PROFIBUS-DP/DP coupler is used to link two PROFIBUS-DP networks together. Byte data (0 to 244 bytes) is transmitted from the DP master of a first network to the DP master of another network and vice-versa.

This principle corresponds to the hardware wiring of inputs and outputs. The coupler has two independent DP interfaces with which it attaches to the two DP networks.

The DP/DP coupler is a slave attached to the DP networks. The data exchange between the two DP networks involves internal copying within the coupler.

Figure 2-13 DP/DP Coupler

2-20	PROFIBUS Networks SIMATIC NET
	6GK1970-5CA20-0AA1 Release 2 05/2000