Communication - ABB FV4000 Operating Instruction

Kommunikation
7

Communication

7.1 HART protocol communication
The HART protocol is used for digital communication between a process control system or PC,
a handheld terminal, and the Vortex / Swirl flowmeter. It can be used to send all parameters
(e.g., measuring point parameters) from the transmitter to the process control system or PC.
Conversely, it also provides a means of reconfiguring the transmitter. Digital communication
utilizes an alternating current superimposed on the analog output (4 ... 20 mA) that does not
affect any meters connected to the output.
Transmission method
FSK modulation of the current output (4 ... 20 mA) is implemented in accordance with the
Bell 202 standard. The maximum signal amplitude is 1.2 mA SS.
Logic 1 representation: 1200 Hz
Logic 0 representation: 2200 Hz
The SMART VISION
documentation is available on request.
Current output load
Minimum > 250 Ω, maximum 750 Ω
The maximum cable length (shielded and twisted) is 1500 m (4921 ft) with a cross-section of
0.25 mm
Baud rate
1200 baud
D184B097U02
®
WINDOWS software is used for HART communication. Detailed
2
(AWG 24).
FV4000 / FS4000
Communication
53