Transmission Of User Data Over Profibus; Status - Siemens SITRANS P DS III Operating Instructions Manual
Digital pressure transmitter
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Also See for SITRANS P DS III:
- Manual (282 pages) ,
- Operating instructions manual (256 pages) ,
- Service manual (74 pages)
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Additional function Byte
Operating mode
See also
Analog input function block (Page 104)
Flow measurement (Page 111)
9.2.3
Transmission of user data over PROFIBUS
User data is continually updated via PROFIBUS cyclical data transmission.
Table 9- 3
Bits
Byte
1
Byte
2
Byte
3
Byte
4
VZ
M
E
9.2.4
Status
The status provides information on:
● Usability of the measured value in the application program
● Device status, e.g. self-diagnosis or system diagnostic
● Additional process information, for instance process alarms
SITRANS P DS III/P410 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00053276-08
User data,
sent to master
2
---
IEEE standard floating point representation of the measured value
7
6
VZ
E
2
7
E
E
2
2
0
-1
M
M
2
2
-8
-9
M
M
2
2
-16
-17
Sign
0
positive
1
negative
mantissa
exponent
User data,
sent from master
Operating mode
5
4
3
E
E
E
2
2
2
6
5
4
M
M
M
2
2
2
-2
-3
-4
M
M
M
2
2
2
-10
-11
-12
M
M
M
2
2
2
-18
-19
-20
Configuration/project engineering
9.2 Configuring
Meaning
Operating mode of totalizer
0 Net counter - count up and
down.
1 Ascending counter
2 Descending counter
3 Hold count.
2
1
E
E
2
2
3
2
M
M
2
2
-5
-6
M
M
2
2
-13
-14
M
M
2
2
-21
-22
0
E
2
1
M
2
-7
M
2
-15
M
2
-23
167
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