Page 26 of 60
2018-05-28
Installation DL2 Doppler Speed Log System
CHAPTER 4: SETUP PROCEDURE
Setup of communication JB70D2-SA to CU-M001-SA
The communication between operator unit and Electronic unit is following IEC61162-450 lightweight
ethernet standard.
This standard allows the network to be used for the distribution and control of sensor systems such
as the DL2. These communicate using proprietary NMEA type messages on this multicast (UDP)
system. The system will exert a maximum load on the network of 20 kB/s (kilobyte per second), and
will tolerate a data trafc up to 20Mbit/s (Megabit per second)
An advantage of this method of communicating is that it becomes simple to have more than 1
display unit on the same system. Instead of (or as well as) repeaters, the user can have as many
control units as they wish. These are activated by pairing the units to the electronic unit. In the case
of INS bridges, the main bridge conning unit can be used as a control unit as well or instead of the
screen (with approval).
The following prameters must be set on both units before communication is established:
• IP adress
• SFI
• Paired SFI (only for Operator unit CU-M001-SA)
• Group
CU-M001-SA Operator Unit for DL2
LAN cable. CAT6. Max. 100m
JB70D2-SA Electronic Unit for DL2
LAN switch
(option)
IP Address: The IP address of the system should not clash
with any other system within the network. Regulations
state that the IP address range. During setup, it may be
necessary to change the IP to t into your local network.
SFI (System Function ID): Each device has its own
identier (SFI) and the systems can then identify who they
are and who they are talking to. These should be unique
within a vessel.
Paired SFI: Each Operator unit CU-M001-SA device
needs to know which system it is part of. By entering the
SFI of the JB70D2-SA the system pairs itself.
It is possible to have multiple screens to a single JB70D2-
SA unit. All screens will work in parallel.
Group: There are 16 groups available for the system to
be part of. It is important that the group is the same on all
communicating devices.
NOTE: The following procedure will take you through the setup using the operator unit CU-M001.
It is important to change the JB70D2-SA group before the CU-M001-SA group otherwise you will
loose connection
The setting of IP adress, SFI, Paired SFI and Group on JB70D2-SA is also accessible from SKIPPER
service software by connecting a PC to the second LAN port or via a LAN switch.
SKIPPER service software is available in dowload folder on www.skipper.no