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Rockwell Automation T8017 Trusted Peer to Peer Communications User Manual

Sds-8017 trusted, Industrial control system trusted, Peer to peer communications - t8017

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SDS-8017
Trusted

TM

Industrial Control System

Trusted

TM

Peer to Peer Communications - T8017

Issue 6 Jan 2006

DESCRIPTION


Trusted

TM

Peer to Peer Communications

provides for the interchange of safety and
non-safety related information between up to
ten Trusted

TM

systems.

The Trusted

TM

Communications Interface

modules

provide

Peer

to

Peer

Communications facilities. The modules will
also support external communications using
Modbus over serial and Ethernet links.
Using the modules to support both Peer to
Peer and external communications will,
however, degrade the performance of Peer
to peer Communications.

The Peer to Peer network employs Ethernet
as its physical layer and UDP/IP as its
transport. The communications interaction
is on a master/slave basis to provide
deterministic

behaviour.

Separate

Communications Interface modules may be
nominated as master on each Peer to Peer
network. These modules may also be
resident in separate systems.

The Peer to Peer Communications network
media may comprise any Ethernet standard
type. The media interfaces provided by the
Trusted

TM

Communications

Interface

module are 10BaseT and 100BaseT. The
network may be used to carry other
communications,

e.g.

data

reporting.

However, this will result in less deterministic
behaviour and is not recommended where
Peer to Peer Communications is to be used
for the transfer of safety related information.

Each Trusted

TM

Communications Interface

module provides two Peer to Peer
Communications ports. The ports may be
used to support redundant network media or
independent networks. In redundant
network configurations, the most recently
received data will be used. An alternate
network configuration may be constructed
using independent modules. As with all
Trusted

TM

modules, hot replacement and

hot-slot repair is supported.

The information to be transferred
between Trusted

TM

systems is simply

defined within the applications programs
as input and output boards in the
standard form. Each output board
specifies a single destination. Multiple
boards are required where the data is to
be transferred to multiple systems.
Board parameters define the identity of
the destination system for outgoing
information, and source system identity
for incoming. Boolean and integer
values may be transferred between
systems.

FEATURES

Supports up to ten
Trusted

TM

systems

Two Ethernet ports
(10BaseT or
100BaseT)

Safety related data
interchange support
(TÜV certifiable)

Simple
configuration