Device-Specific Limits
Description Limit Comment
Maximum number of synchronous
changes of chart inputs per task level
165 When the limit is exceeded, an error message is output by
the device. Consequently, the device starts monitoring.
The red ERROR-LED lights up.
Maximum number of chart outputs per
task level
150
Additional Limits
Additional limits
1)
for the following CFC blocks:
Task Level Maximum Number of Modules in the Task Levels
TIMER
2)
3)
TIMER_SHORT
2)
3)
MW_BEARB — —
PLC1_BEARB
15 30
PLC_BEARB
SFS_BEARB — —
1)
When the limit is exceeded, an error message is iisued by the device. Consequently, the device starts moni-
toring. 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 resolu-
tion of the device of 10 ms, as then, the blocks will not then start with the starting pulse.
Maximum Number of TICKS in the Task Levels
Task Level
Limit in TICKS
1)
MW_BEARB ((Measured Value Processing) 10000
PLC1_BEARB (Slow PLC Processing) 12000
PLC_BEARB (Fast PLC Processing) 600
SFS_BEARB (Interlocking) 10000
1)
When the sum of TICKS of all blocks exceeds the limits before-mentioned, an error message is output by
CFC.
Processing Times in TICKS Required by the Individual Elements
Individual Element
Number of TICKS
Block, basic requirement 5
Each input more than 3 inputs for generic modules 1
Connection to an input signal 6
Connection to an output signal 7
Additional for each chart 1
Arithmetic ABS_VALUE 5
ADD 26
SUB 26
MUL 26
DIV 54
SQUARE_ROOT 83
Basic logic AND 5
CONNECT 4
DYN_OR 6
Technical Data
4.26 User-defined Functions (CFC)
SIPROTEC 4, 7SJ62/64, Manual 507
C53000-G1140-C207-8, Edition 08.2016
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