Integrator's Guide6
© 2017 Nortek AS
2 Basic interface concept
The Nortek Signature Series products command interface are ASCII based and line oriented.
Before diving into the chapters covering interfaces and commands, the operational modes and
how to change between the modes are described. Understanding the use and constrains of the
modes is important as it is used frequently when communicating with the instrument.
2.1 Modes
The current profiler operates in distinct modes. These modes will have several explicit commands
in order control the instrument. The majority of the commands are initiated from the Command
mode. The possible modes for the instrument are:
Command = Command and control
Data Retrieval = Data download from recorder
Measurement = Data collection mode
Confirmation = Confirmation mode
Figure: Instrument modes of operation
Initializing communication with the instrument is performed by sending a < BREAK >, which is
defined below. The <BREAK> will either set the instrument in Confirmation mode or restart
Command mode. The options for changing mode depends on the present mode of the instrument
(see diagram above for clarity). The timeout shown in the diagram occurs if no commands are
received in the various modes. A timer will then ensure that instrument operation continues. The
To Next Page
Loading...
