II - DCE FEL ČVUT v Praze

Structure of the
parameter data
records for HART
analog output
modules
I/O Modules with Intrinsically-Safe Signals
C79000-G7076-C152-04
Figure 4-11 shows data record 0 for the static parameters and data record 1
for the dynamic parameters. 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
Channel 0
Channel 1
Byte 1 0 0 0 0 0 0 0 0
Byte 0
Byte 2
Byte 3
Byte 4
Byte 5
7 6 5 4 3 2 1 0
0 0 0 0 0 0 0
Byte 1 0 0 0 0
Byte 6
to 9
Byte 10
to 13
Enable diagnostic interrupt
0 0
must be 0
must be 0
Enables
Channel 0
Channel 1
Behavior during CPU 2#00 = subst. value*
STOP (OD active) 2#01 = last value
M. type, m. range, channel 1
M. type, m. range, channel 0
see
following
Table 4-12
Reserved
Reserved
Subst. value, channel 0
Subst. value, channel 1
Reserved
Reserved
Fig. 4-11 Parameters of the HART analog output module
* For the substitute value -6912 (E500 Hex) the outputs will be disabled.
Parameter data record 1
First “High-
Byte,” then
“Low-Byte”
Table 4-12 Codes for the output type and output range for HART analog output
modules
Output type Code Output range Code
Deactivated 2#0000 Deactivated 2#0000
Current output
without HART
Current output
with HART
2#0010 0 to 20 mA
4 to 20 mA
SIMATIC S7 HART Analog Modules
2#0111 4 to 20 mA HART
All commands permitted,
and monodrop operation.
2#0010
2#0011
2#1100
4-27