The GDP-IS 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 transfer
an optocoupler pair must be installed between wired and optical PROFIBUS which also adapts the level to the IS layer. When using
copper cables a segment coupler (RS485-IS
coupler) must be installed to ensure explosion
protection.
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 451B
■ D9T-RS485IS connector
■ SC12Ex segment coupler
■ OC11Ex/… optocoupler

■ Intrinsically safe gateway for PROFIBUSDPV1
■ Connection of the excom station to the
PROFIBUS
■ Baud rate max. 1.5 Mbps
■ PROFIBUS interface acc. to PROFIBUS
user organization (PNO) with RS485-IS
layer