Are represented with the first four bytes as floating point numbers, according to the IEEE 754
standard. Each value is followed by a status byte indicating the quality code.
Process value 32 bit Status code
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
64 bit totalizers:
Are represented with the first eight bytes as floating point numbers, according to the IEEE 754
standard. Each value is followed by a status byte, indicating the quality code.
Process value 64 bit Status code
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 Byte 9
Status codes for cyclic parameters
The status shows the quality of the process value.
Bit Hex val‐
ue
Comment According NAMUR
NE107 signal status
7 6 5 4 3 2 1 0
0 0 0 0 0 0 X X 00 BAD - non specific Failure (F)
0 0 1 0 0 1 X X 24 BAD - maintenance alarm,
more diagnosis available
Failure (F)
0 0 1 0 1 0 X X 28 BAD - process related, no main‐
tenance
Failure (F)
0 1 1 1 1 0 X X 78 UNCERTAIN – process rela‐
ted, no maintenance
Out of specification (S)
1 0 1 0 1 0 X X A8 GOOD - maintenance deman‐
ded
Maintenance (M)
1 0 1 0 0 1 X X A4 GOOD - maintenance required Maintenance (M)
1 0 1 1 1 1 X X BC GOOD - function check Check (C)
1 0 0 0 0 0 X X 80 GOOD
The following two bits could be additionally set in parallel to the quality codes
above:
X X X X X X 1 X 02 Update event. Parameter with
attribute static was modified
X X X X X X X 1 01 Simulation active
Table 2-2 Default units for totalizers
VALUE Unit
Mass kg
Volume m
3
Standard volume flow N/m
3
Fraction A kg
Fraction B kg
Communication
2.9 Cyclic data exchange
FCT030 Profibus (From firmware 4.0)
Function Manual, 06/2018, A5E39931906-AB 21
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