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Additional Limits
Additional limits
1)
for the following 4 CFC blocks:
Task Level
MW_BEARB
PLC1_BEARB
PLC_BEARB
SFS_BEARB
1)
When the limit is exceeded, a fault indication is output by the device. Consequently, the device is put into monitoring
mode. The red ERROR-LED lights up.
2)
TIMER and TIMER_SHORT share the available timer resources. The relation is TIMER = 2 · system timer and
TIMER_SHORT = 1 · system timer. The following condition applies for the maximum number of timers: (2 · number of
TIMERs + number of TIMER_SHORTs) < 20. The LONG_TIMER is not subject to this condition.
3)
The time values for the blocks TIMER and TIMER_SHORT must not be selected shorter than the time resolution of the
device of 5 ms, as the blocks will not then start with the starting pulse.
Maximum Number of TICKS in the Task Levels
Task Level
MW_BEARB (Measured Value Processing)
PLC1_BEARB (slow PLC Processing)
PLC_BEARB (fast PLC Processing)
SFS_BEARB (switchgear interlocking)
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
Block, basic requirement
Each input more than 3 inputs for generic modules
Connection to an input signal
Connection to an output signal
Additional for each chart
Operating sequence module
Flip-Flop
Loop module
Decoder
Dynamic OR
Addition
Subtraction
Multiplication
Division
Square root
Timer
Timer
Blinker lamp
Counter
Adapter
SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
TIMER
2) 3)
TIMER_SHORT
15
CMD_CHAIN
2) 3)
30
CMD_CHAIN
D_FF_MEMO
LOOP
DM_DECODE
DYN_OR
ADD
SUB
MUL
DIV
SQUARE_ROOT
TIMER_SHORT
LONG_TIMER
BLINK
COUNTER
REAL_TO_DINT
Technical Data
4.17 User-defined Functions (CFC)
D_FF_MEMO
20
350
Limit in TICKS
10 000
1 900
200
10 000
Number of Ticks
5
1
6
7
1
34
6
8
8
6
26
26
26
54
83
8
11
11
6
10
1)
291
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