Notes to SIPROTEC
®
objects
12
7VU68x Redundant T103 Bus mapping
C53000-L2540-C558-1
1.3
Measured Values
For the transmission of measured values, the compatible range and the private range
can be used. Are there several measurement telegrams parameterised then these are
transferred cyclically after each other.
The range of the values which can be transmitted is /-240% or +/-2.4 of the
rated value. The value in data unit 9 has 13 bit (1 sign, 12 bit data). That means that
+/- 4096 ind/- 240% of the measured value. Some following measured values
use a different definition:
•
cos Phi: -4096 relates to cos PHI = -1; +4096 relates to cos PHI = +1
Changes of the scaling of the measured values are possible in adaptation to the con-
crete installation environment (ref. to manual “IEC 60870-5-103 Communication data-
base”).
Reference
Refer to chapter 3.3
Note
Depending on the device composition not all of the indicated analog inputs (and cor-
responding IEC 60870-5-103 mapping entries) may be available in the SIPROTEC
®
device.
Note
If all parameterised measurement telegrams aren't transferred, the parameter Scan-
ning period (in ms) for measurements must be put on a greater value.
