NEG Negator X X X X
NOR NOR - Gate X X X X
OR OR - Gate X X X X
REAL_TO_DINT Real after DoubleInt, adapter X X X X
REAL_TO_UINT Real after U-Int, adapter X X X X
RISE_DETECT Rising edge detector X X X X
RS_FF RS- Flipflop – X X X
RS_FF_MEMO Status memory for restart X X X X
SI_GET_STATUS Information status single point
indication, decoder
X X X X
SI_SET_STATUS Single point indication with
status, encoder
X X X X
SQUARE_ROOT Root Extractor X X X X
SR_FF SR- Flipflop – X X X
SR_FF_MEMO Status memory for restart X X X X
ST_AND AND gate with status X X X X
ST_NOT Negator with status X X X X
ST_OR OR gate with status X X X X
SUB Substraction X X X X
TIMER Timer – X X –
TIMER_SHORT Simple timer – X X –
UINT_TO_REAL U-Int to real, adapter X X X X
UPPER_SETPOINT Upper Limit X – – –
X_OR XOR - Gate X X X X
ZERO_POINT Zero Supression X – – –
General Limits
Designation
Limit Comments
Maximum number of all CFC charts consid-
ering all task levels
32 When the limit is exceeded, an error message is output by the
device. Consequently, the device is put into monitoring mode. The
red ERROR-LED lights up.
Maximum number of all CFC charts consid-
ering one task level
16 Only Error Message
(record in device fault log, evolving fault in processing procedure)
Maximum number of all CFC inputs consid-
ering all charts
400 When the limit is exceeded, an error message is output by the
device. Consequently, the device is put into monitoring mode. The
red ERROR-LED lights up.
Maximum number of inputs of one chart
for each task level (number of unequal
information items of the left border per task
level)
400 Only fault annunciation (record in device fault log); here the
number of elements of the left border per task level is counted.
Since the same information is indicated at the border several
times, only unequal information is to be counted.
Maximum number of reset-resistant flip-
flops
D_FF_MEMO
350 When the limit is exceeded, an error message is output by the
device. Consequently, the device is put into monitoring mode. The
red ERROR-LED lights up.
Device-specific Limits
Designation
Limit Comments
Maximum number of synchronous changes
of chart inputs per task level
50 When the limit is exceeded, an error message is output by the
device. Consequently, the device is put into monitoring mode. The
red ERROR-LED lights up.
Maximum number of chart outputs per task
level
150
Technical Data
4.20 User-defined Functions (CFC)
SIPROTEC 4, 7UT6x, Manual 457
C53000-G1176-C230-5, Edition 09.2016
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