Simrad ER60, Operator'S Manual

Page: 149 / 182

Data interfaces
141
850-164692 / Rev.B
Data subscriptions and remote control
Introduction
The echo sounder implements the facility to subscribe to data
and control the echo sounder operation from a user developed
remote application. This enables you to write your own
application which controls the operations of the echo sounder
(e.g. start/stop pinging, change ping interval, and start/stop data
recording)
From your application you can also subscribe to data from the
echo sounder. This means that you can ask the echo sounder to
continuously send various data (e.g. Depth data, Target Strength
data, and Integration data) to your application
Client
application
(Echo sounder
or third party)
Subscriber parameter updates
(UDP / Binary)
Subscribed data updates
(UDP / Binary)
Commands and responses
(UDP / XML)
Echo sounder
server application
(CD6996)
The communication between the echo sounder program and
your program is performed by exchanging UDP messages via
the LAN. Command and response messages are XML based text
messages. Subscribed data updates are binary data structures,
which must be decoded using information about the data
structure.
Overview
The following is an overview of the process for data
subscription and remote control.
1 Request server information
2 Connect to server
3 Keep connection alive
4 Issue commands on server
a Subscription of data:
- Create data subscriptions
- Handle data
- Change data subscriptions
-Destroy data subscriptions