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4.4 Operation and Configuration
After the power is applied to the instrument, it automat-
ically executes several self test routines. After they
have successfully completed, the process information
is displayed on the LCD display. The operator may con-
figure which units are to be displayed:
Actual flowrate in direct reading engineering units:
Q f
ft 3 / m
1 3 . 5 6
Totalized actual flow:
Qf
ft 3
4 0 9 . 8
4.5 Digital Communications Protocols
TRIO-WIRL is available (or will be available) with the
following communications protocols:
HART
*
Profibus
*
Fieldbus Foundation
*
SmartVision
*
4.5.1 HART Protocol
The HART-Protocol provides for digital communication
between a process control system/PC, handheld termi-
nal and the TRIO-WIRL. All parameters, such as meter
location specific data, can be transmitted from the con-
verter to the process control system or PC. In the
reverse direction it is possible to reconfigure the con-
verter.
The digital communication utilizes an ac signal super-
imposed on the current output (4-20 mA) which does
not affect any other instruments connected to the out-
put.
The Microsoft WINDOWS-based software program
SMART VISION
may be used to operate and config-
ure
the
converter
SMART VISION is a universal communication software
tool for intelligent field instruments, which uses a vari-
PN25080
TRIO-WIRL INSTRUCTION MANUAL
using
HART-Communication.
Fluid temperature:
T
° F
366.1
A Multiplex-Mode is also selectable for the display. In
this mode it is possible to display several parameters.
The parameter shown on the display alternates every
10 seconds.
ety of communication methods to provide for data
exchange and includes a complete field instrument pal-
ette. The main elements include parameter display,
configuration, diagnosis, recording and data manage-
ment for all intelligent field instruments which satisfy
the communication requirements.
4.5.1.1 Communication
1. Over FSK-Modem with Point-to-Point or Multidrop
operation.
2. Over ABB Automation Products HART-Multiplexer.
SMART VISION is compatible with standard modern
PC's or notebook computers running MS Windows Ver-
sion 3.1 and higher, Windows 95/98 and Windows NT.
4.5.1.2 Transmission Mode
FSK-Modulation on the 4-20 mA current output per Bell
202 Standard. Maximum signal amplitude 1.2 mA
Load, Current Output
Minimum = 250 Ω, maximum = 750 Ω
Maximum cable length = 1500 m AWG 24 twisted and
shielded
.
PP
Converter 4 - 5
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