22 system_flags (system flags, node number 151), 1 inputs system_flags, System modules – Lenze ECSCAxxx User Manual
Page 372
System modules
SYSTEM_FLAGS (system flags, node number 151)
Inputs SYSTEM_FLAGS
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EDBCSXA064 EN 3.2
13.22
SYSTEM_FLAGS (system flags, node number 151)
System flags are global variables that are integrated in the run−time system as an inherent
part. They feature functionalities for making programming easier.
13.22.1
Inputs SYSTEM_FLAGS
The following system flags are part of the ECSxA... axis module:
Variable
Data type
Address
Comments
SYSTEM_bClock01Hz
BOOL
%IX151.0.0
0.1 Hz system clock
SYSTEM_bClock1Hz
%IX151.0.8
1.0 Hz system clock
SYSTEM_bClock10Hz
%IX151.1.0
10 Hz system clock
SYSTEM_bClock0100Hz
%IX151.1.8
100 Hz system clock
SYSTEM_bTogCycleTask
%IX151.2.0
Toggle marker − cyclic task
SYSTEM_b1LoopCyclicTask
%IX151.2.8
First loop − cyclic task
SYSTEM_b1LoopTask2
%IX151.3.0
First loop − task ID2
SYSTEM_b1LoopTask3
%IX151.3.8
First loop − task ID3
SYSTEM_b1LoopTask4
%IX151.4.0
First loop − task ID4
SYSTEM_b1LoopTask5
%IX151.4.8
First loop − task ID5
SYSTEM_b1LoopTask6
%IX151.5.0
First loop − task ID6
SYSTEM_b1LoopTask7
%IX151.5.8
First loop − task ID7
SYSTEM_b1LoopTask8
%IX151.6.0
First loop − task ID8
SYSTEM_b1LoopTask9
%IX151.6.8
First loop − task ID9
SYSTEM_nTaskInterval
integer
%IW151.7
Interval of current task
SYSTEM_nTaskID
%IW151.8
Identification of current task
I
Tip!
The system flags are not generated in simulation mode.
SYSTEM_bClockxHz
These system flags output a fixed clock pulse with an equal pulse/pause ratio.
ƒ
State alterations of the flag are effected in real time.
ƒ
When you use this system flag, observe the sampling frequency used for polling the
flag (aliasing effect). It should at least be twice the change frequency.
Example: You want to use the system flag SYSTEM_bClock100Hz as a clock for a
counter.
ƒ
The pulse/pause ratio is 5 ms/5 ms.
ƒ
To avoid an aliasing effect, the counter must always be polled with an INTERVAL
TASK < 5 ms.
)
Note!
The SYSTEM_bClockxHz system variables must not be used to trigger
event−controlled tasks. Use time−controlled tasks for this.