Terms and Definitions
DFM S7 fuel flow meters. Operation manual. Version 1.0
© Technoton, 2019 6
Terms and Definitions
S7 —Technology designed for wireless collection of data from unattended sensors in
systems of industrial and automobile Telematics. S7 Technology is recommended for
use in facilities where wiring is impossible or hard to install.
S7 Technology implements Bluetooth 4.X Low Energy (BLE) as a communication channel.
S7 Technology provides ultra-low power consumption and a long period of independent
operation for smart sensors and other IoT devices.
On the application level, S7 Technology is fully compatible with S6 Technology which uses
cabling.
Advantages of S7 Technology:
•Simple design of data transmission protocol;
•Low power consumption, a potential for fully independent operation of sensors for
several years;
•Option of data collection by several data recipients at one time.
DFM S7 fuel flow meters are based on S7 Technology.
S6 is the Technology of combining smart sensors and other IoT devices within one
wire network for monitoring of complex stationary and mobile objects: vehicles,
locomotives, smart homes, technological equipment etc. The Technology is based
and expands SAE J1939 automotive standards.
Information on cabling system, service adapter and S6 software refer to CAN j1939/S6
Operation manual.
PGN (Parameter Group Number) —is a combined group of S6 parameters, which has common
name and number. Functional modules (FM) of the Unit can have input/output PGNs and setup
PGNs.
SPN (Suspect Parameter Number) —informational unit of S6. Each SPN has determined name,
number, extension, data type and numerical value. The following types of SPN exist:
Parameters, Counters, Events. SPN can have a qualifier which allows qualification of
parameter’s value (e.g. – Onboard power supply limit/Minimum).
GNSS (Global Navigation Satellite System) —System for area positioning of an object through
satellite signal processing. GNSS is composed of space, ground and user segments. Currently,
there are several GNSSs: GPS (USA), GLONASS (Russia), Galileo (EU), BeiDou (China).
Analytical report —report generated in ORF 4 on vehicle or group of vehicles operation for
chosen time period (usually a day, week or month). Can be composed of numbers, tables,
charts, mapped route of vehicle, diagrams.
Onboard reports (the Reports) —information about vehicle which is returned to a user of
Telematics system in accordance with inputted criteria. The Reports are generated by a
terminal unit both periodically (Periodic reports) and on Event occurrence (Event report).
Parameter —time-varying or space characteristic of the Vehicle (SPN value). For example,
speed, fuel volume in the tank, hourly fuel consumption, coordinates. Parameter is usually
displayed in the form of graph, or averaged data.
