Siemens siprotec 7SA522 User Manual page 133

Table 5-7 Selection guide for function modules and
Function Modules
ABSVALUE Magnitude calculation
AND AND-gate
BOOL_TO_CO Boolean to control (conver-
sion)
BOOL_TO_DI Boolean to double point
BUILD_DI Create double point annuncia-
tion
CMD_INF Test
CONNECT Connection
D_FF D-flipflop
7SA522 Manual
C53000-G1176-C119-2
Figure 5-29 Establishing the
Within the Run Sequence menu, select (GLW, and then 3UHGHFHVVRU IRU ,Q
VWDOODWLRQ, to ensure that the function modules selected from the library will be im-
plemented into the desired task level (Figure 5-30).
Figure 5-30 Assignment of function modules to the selected
The proper assignment is important for several reasons. For example, if interlocking
logic were to be set up in the measured values task level, indications would constantly
be created by the cyclical processing, filling the buffer unnecessarily. On the other
hand, the interlocking condition at the moment of a switching operation may not be
processed at the right time, since measured value processing is done only every
600 ms.
Description
task level
task level
s
Run-Time Level
MW_BEARB PLC1_BEARB
Meter processing Slow PLC
X –
– X
– X
– X
– X
– –
– X
– X
Configuration
task level
PLC_BEARB SFS_BEARB
Fast PLC Interlocking
– –
X X
X –
X X
X X
– X
X X
X X
5-35