Behavior Types Of The Outputs In Count Modes - Siemens SIMATIC ET 200S Operating Instructions Manual

2.6.9

Behavior Types of the Outputs in Count Modes

Introduction
The 1Count24V allows you to store two comparison values, which are assigned to the digital
outputs. The outputs can be activated, depending on the counter status and the comparison
values. The various ways of setting the behavior of the outputs are described in this section.
Description
The 1Count24V has a real digital output and a virtual digital output that exists only as a
status bit in the feedback interface.
Parameters can be assigned for both outputs ("Function DO1" and "Function DO2"
parameters).
You can change the function and the behavior of the digital outputs during operation. The
new function takes effect immediately.
You can choose from the following functions:
● Output
● Counter status ≥ comparison value
● Counter status ≤ comparison value
● Pulse on reaching the comparison value
● Switch at comparison values (DO1 only)
Output
You can switch the outputs on and off with the control bits SET_DO1 and SET_DO2.
The control bits CTRL_DO1 or CTRL_DO2 must be set for this.
You can query the status of the outputs with the status bits STS_DO1 and STS_DO2 in the
feedback interface.
The status bits STS_CMP1 and STS_CMP2 indicate that the relevant output is or was
switched on. These status bits retain their status until they are acknowledged. If the output is
still switched, the corresponding bit is set again immediately. These status bits are also set
when the control bit SET_DO1 or SET_DO2 is operated without DO1 or DO2 being enabled.
Isochronous mode: In isochronous mode, the output DO1 is switched at time T
of the virtual output DO2 is signaled at time T
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07
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1Count24V
2.6 Count Modes
. The status
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