Siemens SITRANS F TRANSMAG 2 Operating Instructions Manual page 113

Bit No. Description
5 DIA_MEASUREMENT
Table B-11 Format of diagnostic data, Byte 8 (=DIAGNOSIS Byte 4)
Bit No. Description
0 ... 6 reserved
7 EXTENSION_
AVAILABLE
The bits in DIAGNOSIS usually take over the function of a group message which can then be split
up in detail using the local messages.
The EXTENSION_AVAILABLE bits indicates that other diagnostic information is available,
basically details of the DIAGNOSIS message. This information is displayed locally.
Additionally, the measured value-related messages are transmitted cyclically with the measured
values in the status byte (Substatus).
Examples for telegrams with diagnostic data (Ext_Diag_Data)
All diagnostic bits are reset in the initial state. When the "Tube empty" event occurs (byte 5, bit
5 set), this gives the following diagnostic data:
Diagnosis Byte No.
Value (hex)
Meaning
Initial state: all diagnostic bits are reset. With the occurrence of the events "Memory failure" (byte
5, bit4) and "Flow outside sensor limits" (byte 5, bit 5), this gives the following diagnostic data:
Diagnosis Byte No.
Value (hex)
Meaning
Initial state: at least one diagnostic bit is set. As soon as all diagnostic messages are reset, the
following diagnostic data result:
Diagnosis Byte No.
Value (hex)
Meaning
TRANSMAG 2 with MAG 911/E
Operating Instructions, 03/2021, A5E00102775-AC
Meaning
Measurement failure
Meaning
---
More diagnosis
information is available
1 2
08 FE
Header
1 2
08 FE
Header
1 2
08 FE
Header
Cause (local message)
Flow measurement failure"
"Tube empty"
"Measuring range overflow"
Cause (local message)
More diagnosis information available (here:
Local messages see DIAGNOSIS--Byte 1)
3 4 5
01 01 20
3 4 5
01 01 30
3 4 5
01 02 00
Profibus Communication
B.7 Diagnostics
6 7 8
00 00 80
Diagnosis
6 7 8
00 00 80
Diagnosis
6 7 8
00 00 80
Diagnosis
113