Profibus Communication
B.5 Output Data (from Master to Slave)
SITRANS F M TRANSMAG 2
96 Operating Instructions, 11/2009, A5E00102775-07
Bit
1
Bit
0
Profile Designation Meaning
1 0 high limited Measured value has exceeded upper limit (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
Several combinations of the values of the status byte are possible in normal operation (i.e.
when the input value of the function block concerned incl. status is not simulated
In the following table, the status conditions have descending order of priority from top to
bottom. If several status conditions are satisfied, the current status with the highest priority is
reported.
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
8A good active advisory alarm high limited X X X X
89 good active advisory alarm low limited X X X X
84 good active opdate event O.K. X X X X
80 good O.K. O.K. X X X X
B.5 Output Data (from Master to Slave)
The output data consist per totalizer (net, forwards and reverse) of one byte of which only
the two LSBs respectively are evaluated. All other bits are not evaluated but should be set to
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