kajaaniMCA
i
– Installation, Operating & Service - 12.1 - W4610201 V2.5 EN
12. HART® Communication
HART® is a registered trademark of HART Communi-
cation Foundation. HART® communication is a digital
method for data communication between a field instru-
ment and the HART® host device (terminal or control
system). HART® communication is implemented by
applying FSK-modulation compatible with the Bell202
modem standard; in this method, a high-frequency
communication signal is incorporated in a DC-level
measurement signal. The average level of the FSK-
signal is zero, and thus it does not distort the 4–20 mA
measurement signal.
The HART communicator is connected parallel to
the current signal line, for example to the HART
connectors on the kajaaniMCAi Display Unit. From
version V1.4 upwards, the kajaaniMCAi software is
provided with device-specific HART programming. In
addition, the HART communicator must contain the
kajaaniMCAi command set. Without the command set,
only the standard HART communications are avail-
able, and these are not sufficient for start-up and calibra-
tion. The MCAi’s HART software tree is illustrated in
Fig. 12.2.
To access a function with the HART communicator,
select the function with the cursor and then press the
RIGHT arrow (functions provided with an arrow sym-
bol) or function key [F4] E
NTER (functions with no
arrow symbol). The data configured on the display can
be sent to the MCA
i
by pressing [F2] SEND or [F4] OK.
Fig. 12.1. HART® communicator.
Fig. 12.1. Operating chart of the HART® communicator.
M easurem ent
D iagnostics
C onfiguration
C a lib ra tio n
PV % C s 3.1%
Proc.Tem p 50.1 °C
C hem icals 0.00u
Aout #1 12.1 m A
% of range 50.1 %
Aout #2 15.3 m A
Aout #3 8.3 m A
H ous.Tem p 37.4 °C
Detailed Conf
C ons range values
Tem p range values
C hem range values
O utput selection
D evice info
Start Sam ple
Lab results
C hem . C om p.
Tem p.C om p.
Loop Test
D evice S tatus
D evice V alues
Sam ple History
Cal.History
M aster R eset
C able Test
Sensor Type
Tem p. Units
Signal Level
D a te & T im e
Do Start Up
Low R nge1
Up Rnge1
Damping1
Alarm Current
Low R nge1
Up Rnge1
Damping1
Low R nge1
Up Rnge1
Damping1
C onductivity
Aout #2
Aout #3
L a te s t S a m p le
Cal. in Use
Start Sam ple 1
Start Sam ple 2
Lab R esults
T1
M C Ai-Lab1
T2
M C Ai-Lab2
.
.
T6
M C Ai-Lab6
Sensor type
Poll addr
M anufacturer
Model
Sensor ser.n:o
Tag
M essage
Universal rev
S o ftw a re re v
H a rd w a re re v
D escriptor
Date
A ssem bly num
Lab C s
Filler %
Clay %
CaCO3 %
Talc %
TiO 2 %
L a te s t S a m p le 1
L a te s t S a m p le 2
C a l in U s e 1
C a l in U s e 2
Show Values
Edit Values
Lab C s
Filler %
Clay %
CaCO3 %
Talc %
TiO 2 %
To Next Page
Loading...
Need help?
General