Siemens SIMATIC 6DL1 136-6AA00-0PH1 - HART Signal; HART Device Status

8.2.3 HART signal
De󹪝nition
A HART signal consists of sine waves of 1200 Hz and 2200 Hz and has an average value of 0.
Description
The following 󹪝gure shows the analog signal with the modulated HART signal (FSK method). It
can be 󹪝ltered out using an input 󹪝lter so that the original analog signal is available again.
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,
"
,
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,
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,
N"
N"
N"

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N"
)[

)[

① Analog signal
② Time (seconds)
K Command
A Response
8.2.4 HART device status
De󹪝nition
The two HART status bytes (HART device status) transferred with each response of the 󹪝eld
device contain error information about the HART communication, the HART command and the
device status.
HART function
8.2 HART system connection
F-AI 8xI 2-/4-wire HART HA
Equipment Manual, 09/2021, A5E50557845-AA 81