More information
See
Tools, Communication
in the
Operator's manual
for more information about configuring communication from the
display unit.
More information
See
Communication
in the
PICUS manual
for more information about configuring communication from PICUS.
13.14.3 Restrictions
Ethernet restrictions
•
Up to 32 controllers can be connected to each other in each network chain or ring.
•
Only
Network chain
or
Network ring
controller configurations are supported.
◦
Display units can be connected to the controllers, but must not be part of the network chain or ring.
◦
Configurable switches and fiber extenders can be included in the network chain or ring.
◦
It is the customer's responsibility to configure and test these.
◦
DEIF is not responsible for the performance or functionality of any non-DEIF equipment in the network.
•
The Ethernet cables must not be longer than 100 metres, point-to-point.
•
The Ethernet cables must meet or exceed the SF/UTP CAT5e specification.
INFO
For marine applications, you can use a marine-approved managed switch to connect the DEIF network to your own
network. The switch must support and be enabled for Rapid Spanning Tree Protocol (RSTP), otherwise there will be a
network failure.
Topology examples
More information
See
Wiring the communication
,
DEIF Ethernet network communication
,
Topology examples
in the
Installation
instructions
for more information.
13.15 DEIF internal communication
13.15.1 Internal communication
The controllers communicate with their extension units using the Ethernet cables and the internal communication ports (OUT and IN,
marked with a red border on the PSM3.1 and PSM3.2). This is type of communication is referred to as
Internal communication
.
For communication redundancy, the extension units 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.
The order that the extension units are wired, determines in which order they appear in the software. The controller the extension
units are connected to is always the first unit in the order.
Internal communication restrictions
•
Up to nine extension units can be connected to each other in each network chain or ring.
•
Only
Network chain
or
Network ring
controller configurations are supported.
◦
Do not connect switches or other non-DEIF network equipment as part of the network chain or ring.
•
The Ethernet cables must not be longer than 100 metres, point-to-point.
•
The Ethernet cables must meet or exceed the SF/UTP CAT5e specification.
Hardware changes that do not activate a Fieldbus conflict alarm
The controller logs the following hardware changes. However, they do not activate a
Fieldbus conflict
alarm:
•
A hardware module is replaced by the same type of hardware module, in the same position.
•
Two of the same type of hardware modules swap position.
DESIGNER'S HANDBOOK 4189340911K UK
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