II - DCE FEL ČVUT v Praze

SIMATIC S7 HART Analog Modules
4.8.1 Parameter Data Records
Structure of the
parameter data
records for the
HART analog input
modules
4-26
Figures 4-10 and 4-11 show data record 0 for the static parameters and data
record 1 for the dynamic parameters for AI HART and AO HART. In the case
of S5 and the norm master, all the parameters are transferred to data record 0.
7 6 5 4 3 2 1 0
Parameter data record 0
Byte 0 0 0 0 0 0 0 Group diagnostics
Byte 1 0 0 0 0 0 0 Wire break check
Channel 0
Channel 1
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
to 9
Byte 10
to 13
7 6 5 4 3 2 1 0
Parameter data record 1
0 0 0 0 0
Hardware interrupt at end of cycle
Enable diagnostic interrupt
Enable limit interrupt
2#00 = 2.5 ms
0 0 0 0
Integration time
2#01 = 16.7 ms
2#10 = 20 ms
Channel 1 Channel 0
2#11 = 100 ms
must be 0
must be 0
M. type, m. range, channel 1
M. type, m. range, channel 0
see
following
Table 4-11
Upper limit value, channel 0
Lower limit value, channel 0
Upper limit value, channel 1
Lower limit value, channel 1
Fig. 4-10 Parameters of the HART analog input module
First “High-
Byte,” then
“Low-Byte”
Table 4-11 Codes for the measurement type and measuring range for HART analog
input module
Measurement type Code Measuring range Code
Deactivated 2#0000 Deactivated 2#0000
4-wire transducer 2#0010 0 to 20 mA
4 to 20 mA
2#0010
2#0011
2-wire-transducer 2#0011 4 to 20 mA 2#0011
HART (2-wire or
4-wire transducer
can be connected.)
2#0111
4 to 20 mA HART
All commands permitted,
and monodrop operation.
2#1100
I/O Modules with Intrinsically-Safe Signals
C79000-G7076-C152-04