4.20 User-defined Functions (CFC)
483
7UT613/63x Manual
C53000-G1176-C160-2
Device-specific Limits
Additional Limits
1)
When the limit is exceeded, an error message is issued 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. For the maximum used timer number
the following side conditions are valid: (2 · number of TIMERs + number of TIMER_SHORTs)
< 30. 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 priority classes
1)
When the sum of TICKS of all blocks exceeds the limits before-mentioned, an error indication
is output by CFC.
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 infor-
mation is to be counted.
Maximum number of reset-resistant
flipflops
D_FF_MEMO
350 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.
Designation Limit Comments
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. Conse-
quently, the device is put into monitoring
mode. The red ERROR-LED lights up.
Maximum number of chart outputs per
task level
150
Additional Limits
1)
for the Following 4 CFC Blocks
Sequence
Level
TIMER
2)
3)
TIMER_SHORT
2)
3)
CMD_CHAIN D_FF_MEMO
MW_PROC
350
PLC1_PROC
15 30 20
PLC_PROC
SFS_PROC
Sequence Level Limits in TICKS
1)
MW_BEARB (Measured Value Processing) 10000
PLC1_PROC (slow PLC processing) 2000
PLC_PROC (fast PLC processing) 200
SFS_PROC (interlocking) 10000
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