Siemens SIMATIC ET 200S Operating Instructions Manual page 164

1Count5V
3.6 Count Modes
Parameter
Mode
Counting mode
Gate function
Input signal HW gate
Function DI
Synchronization
2
Main count direction
High counting limit
DO1/DO2 diagnostics (wire break) is possible only with pulse lengths of > 90 ms on digital output DO1/DO2.
1
Only relevant if Function DI = Synchronization at positive edge or HW enable for synchronization
2
Parameter Assignment Error
● Incorrect mode
● Incorrect main count direction
● The "Input signal HW gate" parameter is set to inverted and the "Function DI" parameter
● High counting limit incorrect
● The value for the behavior of DO2 is not set to output although "Switch at comparison
● The value for hysteresis does not equal 0 although "Switch at comparison values" has
● Function DI incorrect
● "On" is set for diagnostics N although "Off" was set for diagnostics A and B.
What to Do in the Event of Errors
Check the set value ranges.
164
Value Range
Continuous counting/
Once-only counting/
Periodic counting
Cancel counting/
Interrupt counting
Normal/inverted
Input/
HW gate/
Latch and retrigger at positive edge/
Synchronization at positive edge/
Latch at positive edge/
HW enable for synchronization
Once only/Periodic
None/Up/Down
2 ... 7FFF FFFF
is not set to HW gate.
values" has been assigned for DO1.
been assigned for DO1.
Default
Count continuously
Cancel counting
Normal
Input
Once-only
None
7FFF FFFF
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07