GE Multilin DDFR, Instruction Manual

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34 DISTRIBUTED DIGITAL FAULT RECORDER – INSTRUCTION MANUAL
SETTING UP RELAY-TO-DDFR COMMUNICATION CHAPTER 1: GETTING STARTED
1.5 Setting up Relay-to-DDFR Communication
1.5.1 Attaching Field Devices (Relays) to the DDFR
Devices communicate with the DDFR via Ethernet only. Depending on the types and
number of devices (sometimes known as "assets" - see below) installed in your facility, you
may have to use a converter - GE Multilin’s MultiNet converter, for example - to convert to
Ethernet from a variety of other communication types. Once all communication types
have been converted to Ethernet this way, at least one MultiLink (Ethernet) switch will be
necessary to allow you to
1. connect the computer via Ethernet to the DDFRs for configuration and/or
data collection purposes, and
2. assemble all Ethernet relay outputs, from original Ethernet or converted
sources, to communicate to each DDFR via the single Ethernet cable running
to that DDFR.
1.5.1.1 Attaching Ethernet-based Relays
FIGURE 1–8: Typical Ethernet-based DDFR-to-Relay Communications