Siemens SITRANS F TRANSMAG 2, Operating Instructions Manual, Page: 109 / 126

Table B-2 Status byte formats
Byte Bit
No. 7 (MSB) 6 5 4 3 2 1 0 (LSB)
5 Quality Substatus Limits
These components may adopt the following values in SITRANS F:
Table B-3 Formats of the quality bits
Bit
7
Bit
6
Profile Designation Meaning
0 0 bad Measured value cannot be used
0 1 uncertain Measured value uncertain
1 0 good (not cascade) Measured value OK
Table B-4 Formats of the substatus bits
Bit
5
Bit
4
Bit
3
Bit
2
Profile Designation Meaning
0 0 0 1 configuration error Parameter error, i.e. upper and lower value for meas‐
uring or output scale identical
0 0 1 1 device failure RAM or EEPROM defective;
Diagnostic bit "Memory error" is also set and the diag‐
nosis message "RAM error" or "EEPROM error" dis‐
played locally
sensor failure Measurement was not possible;
Diagnostic bit "Memory error" is also set and the diag‐
nosis message "Measuring path fault" displayed locally
0 1 1 1 out of service Corresponding function block is in "Out of service"
mode (see parameter "MODE_BLK actual")
0 0 0 0 non specific Measurement contains too many implausible meas‐
ured values, e.g. due to solids or gas bubbles in the
medium.
Diagnostic bit "Memory error" is also set and the diag‐
nosis message "RAM error" or "EEPROM error" dis‐
played locally
0 0 0 1 last usable value Failsafe mode: the current measured value has been
replaced with the last good measured value
0 0 1 0 substitute set Failsafe mode: the current measured value has been
replaced with the agreed failsafe value
0 1 0 0 initial value Failsafe mode or state before the first measurement:
the current measured value has been replaced with
the start value
0 1 0 0 sensor conversion not accurate Measured value is outside the sensor limits
(Table 5-1, Page 30)
O.K. Measured value is OK (normal state)
0 0 0 1 update event A parameter with the "static" memory attribute has
been changed locally or on the PROFIBUS
Profibus Communication
B.5 Status bytes
TRANSMAG 2 with MAG 911/E
Operating Instructions, 03/2021, A5E00102775-AC
109