HART signal
The following schematic shows the analog signal with the HART signal superimposed on it
(FSK technique). The signal is composed of sine waves of 1200 Hz and 2200 Hz having an
average value of zero. It can be filtered out using an input filter so that the original analog signal
is available again.
+]
+]
P$
P$
P$
P$
$QDORJVLJQDO
7LPHVHFRQGV
& &RPPDQG
$ 5HSO\
&
5
&
5
&
5
Figure 13-8
The HART signal
HART commands and parameters
You can use SIMATIC PDM to set the parameters of the HART field devices via HART
commands and read these out via HART responses. The HART commands and their
parameters are divided into three groups with the following properties:
● universal
● generally usable
● device specific
Universal command must be supported by all manufacturers of HART field devices; it is
recommended that generally useable commands be supported. In addition there are device-
specific commands, which only apply for the specific field device.
Analog electronic modules
13.10 Basics of HART
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
307
Содержание SIMATIC ET 200iSP
Страница 82: ...Configuration options 3 18 Redundancy with IM 152 ET 200iSP 82 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 184: ...Commissioning and Diagnostics 6 8 Diagnostics with STEP 7 ET 200iSP 184 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 194: ...Maintenance 7 7 Reading service data ET 200iSP 194 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 220: ...Terminal modules 9 6 Terminal module TM RM RM ET 200iSP 220 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 372: ...Glossary ET 200iSP 372 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 384: ...Index ET 200iSP 384 Operating Instructions 11 2017 A5E00247483 07 ...