Siemens SIPROTEC 7SD610 Manual page 362

Technical Data
4.15 User defined functions (CFC)
Device-specific Limits
Description
Maximum number of concurrent changes to planned inputs
per task level
Chart inputs per task level
Maximum number of chart outputs per task level
Additional Limits
Task Level
MW_BEARB
PLC1_BEARB
PLC_BEARB
SFS_BEARB
1)
When the limit is exceeded, an error indication is output by the device. Consequently, the device starts monitoring. 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. For the maximum used timer number the following side conditions are valid: (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 smaller than the time resolution of the device,
i.e. 5 ms, otherwise the blocks will not start with the starting impulse issued.
Maximum Number of TICKS in the Task Levels
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.
362
1)
Additional limits
2) 3)
TIMER TIMER_SHORT
15
Task Level
Limit
50 When the limit is exceeded, an error
message is output by the device. Conse-
quently, the device is put into monitoring
mode. The red ERROR-LED lights up.
150
for the following 4 CFC blocks:
2) 3)
CMD_CHAIN
30
C53000-G1176-C145-6, Release date 02.2011
Comments
D_FF_MEMO
20 350
Limit in TICKS
10 000
1 900
200
10 000
SIPROTEC, 7SD610, Manual
1)