User's Manual

Page 10
E Series Data Radio – User Manual
© Copyright 2005 Trio DataCom Pty. Ltd.
Part C – Applications
Part C – Applications
Generic Connectivity
The E Series has been designed for SCADA and telemetry
applications, and any other applications that use an ASCII
communications protocol, and which connect physically using the
RS232 interface standard (although converters can be used to
adapt other interfaces such as RS422/485, RS530/V35, G703 etc).
Any protocol that can be displayed using a PC based terminal
program operating via a serial communications port is suitable for
transmission by the E Series radio modems.
An ASCII protocol is any that consists of message strings formed
from ASCII characters, that being defined as a 10 or 11 bit block
including start and stop bits, 7 or 8 data bits and optional parity
bit(s). Port set-up dialog that includes the expressions “N,8,1”, or
E,7,2” or similar indicate an ASCII protocol.
Most of the dominant telemetry industry suppliers utilise proprietary
ASCII protocols, and also common ‘open standard” industry
protocols such as DNP3, MODBUS, TCP/IP, and PPP. These are
all ASCII based protocols.
Industries and Applications
The E Series products are widely used in point-to-point and
point-to-multipoint (multiple access) applications for remote
interconnection of PLCs, RTUs, dataloggers, and other data
monitoring and control devices - including specialist utility devices
(such as powerline ACRs). In addition, other applications such as
area wide security and alarm systems, public information systems
(traffic flow and public signage systems) and environmental
monitoring systems.
Application Detail
SCADA Systems
This is where one or more centralised control sites are used
to monitor and control remote field devices over wide areas.
Examples include regional utilities monitoring and controlling
networks over entire shires or a greater city metropolis. Industry
sectors include energy utilities (gas and electricity distribution),
water and sewerage utilities, catchment and environment groups
(rivers, dams and catchment management authorities).
Telemetry Systems
Dedicated telemetry control systems interconnecting sequential
devices either where cabling is not practical or distances are
considerable.
Examples include:
• ore conveyor or slurry pipeline systems
• simple water systems (pump and reservoir interlinking)
• broadcast industry (linking studio to transmitter) etc.
Information Systems
Public Information systems such as freeway vehicle flow, travel
time monitoring, feedback signage, parking signage systems and
meteorological stations etc.