26 sys, Function library – Lenze ECSCSxxx User Manual
Page 317
Function library
SYS
l
317
EDBCSXS064 EN 4.0
12.26
SYS
Function
This function block contains global system variables which are firmly integrated into the
run−time system. They provide functions for programming relief.
ƒ
On the function block outputs clock signals with the same pulse/pause ratio are
output.
ƒ
The outputs are toggled in real time.
ƒ
If you use these output signals, observe the scanning frequency at which the
outputs are scanned (Aliasing effect). It should at least be twice the toggle
frequency.
The following outputs are integrated:
Output
Toggle frequency
Period
Clock01Hz
0.1 Hz
T = 10 s
Clock1Hz
1.0 Hz
T = 1 s
Clock10Hz
10 Hz
T = 100 ms
Clock0100Hz
100 Hz
T = 10 ms
SYS
880
881
882
883
Clock01Hz
Clock1Hz
Clock10Hz
Clock100Hz
ECSXA263
Fig. 12−27
SYS function block