Siemens SIMATIC ET 200SP - Behavior of a DQ (High_Speed_Counter)

Using the High_Speed_Counter technology object
3.5 Configuring the High_Speed_Counter
Counting, measurement and position detection
110 Function Manual, 12/2017, A5E32009889-AG
3.5.6
Behavior of a DQ (High_Speed_Counter)
Operating mode (
High_Speed_Counter V3.0 or higher
)
The operating mode determines which value comparison functions work.
Operating mode
Meaning
Use count value as reference
(default)
The comparison functions and hardware interrupts for com-
pare events work with the counter value.
This functionality corresponds to the functionality of the
High_Speed_Counter in versions before V3.0.
Use measured value as reference The comparison functions and hardware interrupts for com-
pare events work with the measured value.
Note
You configure the operating mode under "Behavior of DQ0" for both digital outputs together.
The
operating mode is also displayed under "Behavior of DQ1".
Set output
With the parameter assignment of a digital output, you specify the condition upon which the
digital output switches.
You can select from the following options:
Function of a digital output (Page 44)
in operating mode "Use count value
as reference"
Meaning
Additional option-specific pa-
rameters
Between comparison value and high
limit
(default)
The respective digital output is active if:
Comparison value <= counter value <= high
counting limit
• Comparison value 0
• Comparison value 1
• Hysteresis (in increments)
Between comparison value and low
limit
The respective digital output is active if:
Low counting limit <= counter value <= compari-
son value
• Comparison value 0
• Comparison value 1
• Hysteresis (in increments)
Between comparison value 0 and 1 The digital output DQ1 is active if:
Comparison value 0 <= counter value <= com-
parison value 1
• Comparison value 0
• Comparison value 1
• Hysteresis (in increments)
At comparison value for a pulse
duration
The respective digital output is active once for
the configured time and count direction when the
counter value reaches the comparison value.
• Comparison value 0
• Comparison value 1
• Count direction
• Pulse duration
• Hysteresis (in increments)