Siemens siprotec 7SA522, User Manual

Page: 133 / 628

Configuration
5-35
7SA522 Manual
C53000-G1176-C119-2
Figure 5-29 Establishing the
task level
Within the Run Sequence menu, select
(GLW
, and then
3UHGHFHVVRUIRU,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
task level
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.
Table 5-7 Selection guide for function modules and
task level
s
Function Modules Description
Run-Time Level
MW_BEARB
Meter processing
PLC1_BEARB
Slow PLC
PLC_BEARB
Fast PLC
SFS_BEARB
Interlocking
ABSVALUE Magnitude calculation X – – –
AND AND-gate – X X X
BOOL_TO_CO Boolean to control (conver-
sion) – X X –
BOOL_TO_DI Boolean to double point – X X X
BUILD_DI Create double point annuncia-
tion – X X X
CMD_INF Test – – – X
CONNECT Connection – X X X
D_FF D-flipflop – X X X