Technical Data
4.3 User-defined Functions (CFC)
SIPROTEC, 7SC805, Manual
C53000-G1140-C380-1, Release date 05.2014
122
Additional Limits
1)
When the limit is exceeded, an error message is iisued by the device. Consequently, the device starts mon-
itoring. The red ERROR-LED lights up.
2)
The following condition applies for the maximum number of timers: (2 · number of TIMER + number of
TIMER_SHORT) < 30. TIMER and TIMER_SHORT hence share the available timer resources within the
frame of this inequation. The limit does not apply to the LONG_TIMER.
3)
The time values for the blocks TIMER and TIMER_SHORT must not be selected shorter than the time res-
olution of the device of 10 ms, as then, the blocks will not then start with the starting pulse.
Maximum Number of TICKS on the Task Levels
1)
When the sum of TICKS of all blocks exceeds the above-mentioned limits, an error message is output in the
CFC.
Additional limits
Task Level
Maximum Number of Modules in the Task Levels
TIMER
TIMER_SHORT
MW_BEARB
—
—
PLC1_BEARB
15
30
PLC_BEARB
SFS_BEARB
—
—
Task level
Limit in TICKS
MW_BEARB (measured value processing)
10000
PLC1_BEARB (slow PLC processing)
6000
PLC_BEARB (fast PLC processing)
500
SFS_BEARB (switchgear interlocking)
10000
