II - DCE FEL ČVUT v Praze

Structure of the
diagnostic data
record 130
Structure of the
diagnostic data
records 131 and
151
I/O Modules with Intrinsically-Safe Signals
C79000-G7076-C152-04
The following figure shows the structure of the diagnostic data record 130,
which you can request to implement automatic recognition of the connected
HART measuring transducer or the HART signal control elements.
Bytes 1/0 for
channel 0
and bytes 5/4
for channel 1
Bytes 3/2 for
channel 0
and
bytes 7/6
for channel 1
15 8 7
0 Bit no.
Bits 1 to 15 = 0
1 = HART field device
found
0 = no HART field device
connected
15 8 7
0 Bit no.
Bits 1 to 15 = 0 1 = HART identification
found
0 = no HART
identification present
Fig. 4-17 Diagnostic data record 130 of the HART analog modules
These contain the data corresponding to the identifiers marked in data record
130: the address of the HART field device which was found and the HART
identification with tags or identifiers for a signal control element. The
structure is illustrated in the following figure.
Data record 131 for channel 0 (length: 38 bytes)
Data record 151 for channel 1 (length: 38 bytes)
Byte 0
Byte 1
Byte 16
Byte 17
Byte 37
7 6 5 4 3 2 1 0
.
.
.
.
SIMATIC S7 HART Analog Modules
No. of bytes for the response
data to the HART command 0
HART identification:
response data to the HART
command 0
(“long-frame” address: bytes1,2
and 9-11 )
Measuring point identifiers
(“tags”):
Response data to the HART
command 13
Fig. 4-18 Diagnostic data records 131 and 151 of the HART analog module
4-35