Siemens SITRANS F TRANSMAG 2, Operating Instructions Manual, Page: 110 / 126

Bit
5
Bit
4
Bit
3
Bit
2
Profile Designation Meaning
0 0 1 0 active advisory alarm Upper warning limit value has been exceeded or the
lower warning limit value has been undershot below
0 0 1 1 active critical alarm Upper alarm limit value has been exceeded or the low‐
er alarm limit value has been undershot
Table B-5 Formats of the limit bits
Bit
1
Bit
0
Profile Designation Meaning
0 0 O.K. The measured value is within the limit values (normal state)
0 1 low limited The measured value has exceeded the upper limit (alarm, warning or
sensor limit)
1 0 high limited The measured value has exceeded the upper limit value (alarm, warning
or sensor limit)
1 1 constant Measured value remains constant
Note
Limit bits can only be clearly evaluated in combination with the quality information!
Status byte combinations
The following combinations of the values of the status bytes described above are possible in
normal operation (i.e. when the input value of the function block concerned incl. status is not
simulated:
Table B-6 Valid combinations of the status byte
Meaning substatus applies to
Value hex quality limits flow total net total total
1F bad out of service constant X
0F bad device failure constant X
0C bad device failure O.K. X X X
11 bad sensor not connected constant X X X
07 bad configuration error constant X X X X
00 bad non specific O.K X X X X
52 uncertain sensor conversion not accurate high limited X X X X
51 uncertain sensor conversion not accurate low limited X X X X
4F uncertain initial value constant X
4B uncertain substitute set constant X
47 uncertain last usable value constant X
8E good active critical alarm High limited X X X X
8D good active critical alarm low limited X X X X
Profibus Communication
B.5 Status bytes
TRANSMAG 2 with MAG 911/E
110
Operating Instructions, 03/2021, A5E00102775-AC