DVL
12
© 2017 Nortek AS
Open the software and click
Connect > Network Discover
. This Discovery tool lists all
instrument available on the network, and presents the following:
o
IP address: A green background indicates that the IP address is properly configured for the
network it is connected to. If the background is red, the IP address must be reconfigured using
the
Discover
option from the menu bar. Refer to the MIDAS manual for more details on this
(Click
Help > SW Manual
)
o
Port timeout is the length of time the software will wait for a response from the instrument before
timing out and issuing an error message. Default: 2000 ms
o
Username/password fields. Username is the command interface user name to use for
connection. Default username/password: "nortek"/" " (blank).
Note that it may not be possible to "discover" instruments that are connected to the local network
through a router
You can also select
Connect > Network
parameters
if you need to set the IP address and name
explicitly. This mode of operation is useful on networks in which the discovery protocol might not
work (e.g. through multiple routers, firewalls or through VPN connections.
Click Apply. You will typically be prompted to switch to command mode. An instrument display
panel is created showing the associated data displays for the current configuration as well as the
action buttons for the instrument. Pressing the play button will directly start a measurement with
the current configuration. Check out the MIDAS software manual (Click
Help > SW Manual
) for
more detailed information about the general operation and functionality of the software.
If you are using Serial port communication:
Open the software and click
Communication > Serial AD2CP.
The dialog lists the following:
o
Instrument name. Can be specified if desired.
o
Serial Port: Shows the available serial ports detected in the system.
o
Port speed shows the requested baud rate for connection to the instrument. A baud rate of
115200 is recommended. Note that not all RS232 USB serial converters support data rate above
115200
o
Port timeout is the length of time the software will wait for a response from the instrument before
timing out and issuing an error message. Default: 2000 ms. If you experience connection
problems you may try to increase the timeout value, e.g. 10000 ms.
Click Apply. The software will then start searching for the instrument by issuing commands on the
selected serial port at various ports speed (starting with the chosen speed). The baud rate will be
changed to the elected baud rate during this process. After the instrument has been connected,
an instrument display panel is created showing the associated data displays for the current
configuration as well as the action buttons for the instrument. Pressing the play button will directly
start a measurement with the current configuration. Check out the MIDAS software manual (Click
Help > SW Manual
) for more detailed information about the general operation and functionality of
the software.
4.3
Command Line Interface
The command interface makes it possible to communicate with the instrument using a terminal
emulator and a set of commands. The
DVL Integrator's Guide
is the recommended manual to
consult for guidance, but as an introduction here are some highlights:
The interface is ASCII based and line oriented. Commands are terminated with CR/LF
Optional encapsulation of commands using NMEA style prefix and checksum to ensure data
integrity
NMEA style commands will return argument names in their response
Argument limits can be retrieved through commands
Comprehensive validation and error handling is implemented
Invalid configurations return the erroneous argument with limits directly, so that each subsequent
error can be handled until a valid configuration is achieved
A single command can be used to retrieve the complete configuration of the instrument with
optional output to file
Commands to set default parameters
External controllers can use commands to store external data in the raw data file (e.g. GPS
