Hart Job And Response Data Records - Siemens SIMATIC ET 200SP HA Manual

B.2

HART job and response data records

HART commands are handled on a channel-specific basis using a separate command
interface with one request data record and one response data record each.
Channel
0
1
2
3
:
:
15
Structure of job data records 80, 82, 84, 86...110
Byte
0
1
2...239
Coding "Request control":
Bit 0...1:
Bit 2:
Bit 3...4:
Bit 5:
Bit 6:
Bit 7:
* HART commands are processed by the I/O module in both transparent message format and
compact message format. However, the response data from the I/O module is always made
available in transparent message format.
Note
When "Number of Preamble Bytes" = 255, the number of preambles set with the parameters
is used. The default setting is five. You can reconfigure the number of preamble bytes using
the HART-specific settings (see section HART-specific settings (Page 72)).
Analog Input Module AI 16xI 2-wire HART HA ( 6DL1134-6TH00-0PH1)
Manual, 11/2017, A5E39408968-AB
Data record number
Request to the field device
80
82
84
86
110
Meaning
Request control
Number of preamble bytes
Communication data according to HART specifi‐
cation
Reserved = 0
0 = Parameters are not checked
Reserved = 0
0 = Transparent format *
1 = Compact format
1 = Enable SHC mode
0 = HART Request
HART operating data records
B.2 HART job and response data records
Response from the field device
81
83
85
87
111
Comment
5...20, 255
63