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The GDP-NI gateway serves to connect the

excom? system to PROFIBUS-DP networks.

Connection to the PROFIBUS-DP is established via optical fibers or copper cables.

When using optical fibers for data transmission, an optocoupler pair must be installed between wired and optical PROFIBUS.

The gateway can be operated at a maximum

transmission rate of 1500 kbps. The bus is

connected to a standard miniature SUB-D slot

on the module rack.

A GSD file containing all configuration files

and parameter sets is available for system

configuration. When connected to suitable

host systems, you can change the system

configuration during operation.

The gateway provides the entire range of

PROFIBUS diagnostic functions including

port-related diagnostics. In addition, manufacturer-specific error codes are generated. They

include HART communication errors, power

supply errors, planning errors as well as information on simulators, internal communication,

redundancy toggle, etc.

Redundancy: The use of two gateways and

two bus cables ensures error-free communication, in case one gateway or one bus line

may fail. If one gateway fails, the other takes

over smoothly, this is called line redundancy.

System redundancy (two masters, each connected to a gateway) is also supported.

Recommended wiring components:

■ PROFIBUS-DP cable, type 451

■ D9T-RS485 connector

■ Gateway for PROFIBUS-DPV1 communication

■ Connection of the excom station to the

PROFIBUS

■ Baud rate max. 1.5 Mbps

■ PROFIBUS interface acc. to PROFIBUS

user organization (PNO)