Siemens siprotec SJ62 User Manual page 510

Additional Limits
Maximum Number of TICKS in the Task Levels
Processing Times in TICKS Required by the Individual Elements
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
Additional limits
Task Level
TIMER
MW_BEARB
PLC1_BEARB
PLC_BEARB
SFS_BEARB
1)
When the limit is exceeded, an error message is output by the device. Consequently, the
device starts monitoring. 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 resolution of the device, as the blocks will not then start with the starting pulse.
Task Level
MW_BEARB (Measured Value Processing)
PLC1_BEARB (Slow PLC Processing)
PLC_BEARB (Fast PLC Processing)
SFS_BEARB (Interlocking)
1)
When the sum of TICKS of all blocks exceeds the limits before-mentioned, an error message
is output by CFC.
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
Arithmetic
1)
for the following 4 CFC blocks:
Maximum Number of Modules in the Task Levels
2) 3)
TIMER_SHORT
—
15
—
Individual Element
ABS_VALUE
ADD
SUB
MUL
DIV
SQUARE_ROOT
4.23 User-defined Functions (CFC)
2) 3)
CMD_CHAIN
—
30
—
Limit in TICKS
7SJ62 7SJ63
2536 2536
255 300
130 130
2173 2173
Number of TICKS
—
20
—
1)
7SJ64
10000
2000
400
10000
5
1
6
7
1
5
26
26
26
54
83
508