Communication
D184B097U02
FV4000 / FS4000
53
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
®
WINDOWS software is used for HART communication. Detailed
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
2
(AWG 24).
Baud rate
1200 baud
Summary of Contents for FS4000
Page 1: ...Operating Instruction D184B097U02 Vortex Flowmeter Swirl Flowmeter FV4000 FS4000 ...
Page 116: ...Appendix 116 FV4000 FS4000 D184B097U02 ...
Page 117: ...Appendix D184B097U02 FV4000 FS4000 117 ...
Page 118: ...Appendix 118 FV4000 FS4000 D184B097U02 ...
Page 119: ...Appendix D184B097U02 FV4000 FS4000 119 ...
Page 120: ...Appendix 120 FV4000 FS4000 D184B097U02 ...
Page 125: ......