Channel-Related Parameters for the Sensor Input Modes
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9
Channel-Related Parameters for the Sensor Input Modes
This section describes the channel-related parameters of the sensor input modes: binary input,
frequency input, and counter. The following parameters are described:
■
Modes of operation
■
Diagnostic parameters
■
Functional parameters
9.1
Modes of Operation
The Target Mode parameter determines the required mode of operation of the channel.
You can select one of the following modes.
9.1.1
Device Maintenance Modes
■
O/S (Out of Service):
In this mode, the channel is out of service. The sensor output is
disabled.
■
Man (Manual):
In this mode, you can manually control a channel by acyclic data
exchange. You can use a configuration tool, e. g., a device type manager, for maintenance
and servicing functions.
9.1.2
Operating Modes
■
Auto (Automatic):
This is the standard mode of operation (default setting) for cyclic user
data exchange. In case of a failure, the binary or frequency input uses a predefined fail-
safe behavior as a fallback.
9.1.3
Operating Mode "Auto" in Case of Fault
The device is in the Auto mode as long as the related state is "GOOD (NC)-OK". If the status
changes to BAD, a predefined fail-safe behavior takes place.
For the sensor input types binary input and frequency input, the following fail-safe behaviors
are selectable:
■
Mode
“
Keep (wrong calculated) OUT value": Keeps the last OUT value that was
calculated - even if it was wrong.
■
Mode
“
Use fail-safe value as OUT
”
. The fail-safe value is the default value for the OUT
parameter if a sensor or sensor electronics are detected.
■
Mode
“
Use last valid OUT value
”
: Device falls back onto the last valid OUT value.
9.2
Functional Parameters
This section describes the channel-related functional parameters.
9.2.1
Sensor Mode
You can enable/diable the sensing of inputs, in order to shorten the total update time of the
sensor inputs. The following parameters exist:
Parameter
Description
SENSOR_MODE
Enables/disables hardware channels 1, 4, 7,
10 (transducer-block-specific)
SENSOR_A_MODE
Enables/disables hardware channels 2, 5, 8,
11 (transducer-block-specific)
SENSOR_B_MODE
Enables/disables hardware channels 3, 6, 9,
12 (transducer-block-specific)
