8. Wiring the communication
8.1 DEIF Ethernet network communication
8.1.1 Communication
The controllers communicate with each other to manage the system over the DEIF network, an Ethernet network.
For communication redundancy, the controllers can be connected in a ring. If there is a disruption or failure, the DEIF proprietary ring
protocol changes the communication path within 100 milliseconds.
INFO
Controllers must only be connected with Network chain or Network ring configuration. Do not include display units or other
equipment in the chain or ring.
INFO
A completely new controller has a Controller ID of 0 (zero) initially. It must be configured to the required ID number,
otherwise an alarm occurs.
Table 8.1 DEIF network characteristics
Category Details
Specifications
• Internet Protocol version 6 (IPv6, Auto), or Internet Protocol version 4 (IPv4, Static)
◦ IPv6 is used by default until Static is specified as the IP address mode
• Up to 12 controllers per system
Functions
• Power management communication, including load-dependent start/stop, and de-loading
• Load sharing communication
• Power management inputs and outputs may be connected to any controller
• Authentication (non-DEIF equipment cannot disrupt communication)
• Connects the controller(s) to:
◦ Controller display unit
◦ Other controllers
• Password protection
◦ Customisable permission levels
8.1.2 Connecting the communication
DEIF network restrictions
• Up to 12 controllers can be connected to each other in each network ring. Display units can be connected to the controllers
without having any effect on the maximum number of controllers in the network ring.
• The Ethernet lines must not be longer than 100 metres, point-to-point.
• The Ethernet lines must meet or exceed the SF/UTP CAT5e specification.
CAUTION
The internal communication ports on the PSM must not be used for the DEIF Ethernet network communication. They are
for future use for connecting extension racks together. Do not use either of the internal communication ports in your
communication setup. These are marked in red.
INFO
For marine applications, a marine-approved managed switch should be used to connect the DEIF network to your own
network. (An ordinary Ethernet switch is not recommended).
INSTALLATION INSTRUCTIONS 4189340909I UK Page 121 of 144
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