Ch0x view parameters (output devices)

Ch0x view parameters (output devices)

The
Ch0x
view includes these parameters:
Parameter
Description
Disable Channel
Disables the channel when not intended for use. This prevents erroneous fault reporting (for example, no load or open wire) and also prevents the FLT LED for that channel from illuminating.
Output Type
Sets the output type for the channel. Available options are:
  • Voltage (V)
  • Current (mA)
Output Range
Sets the output range for the output type. Ranges vary according to the selected
Output Type
.
Channel Offset
To compensate for any error in actuator operation, the device allows adding an offset to the output channel value sent from the controller. Values are entered in Engineering Units (EU). The default value for the channel offset is 0.0.
Hold for Initialization
Causes the physical output to hold its present state until the value commanded by the controller matches the value at the output screw terminal within 0.1% of full scale. This feature prevents spiking of the output when transitioning into Run mode from Program mode, when recovering from a fault state, or at power up.
Output State in Program Mode
Hold Last State
Causes the output to remain at the last value sent from the controller prior to being placed in Program mode.
After the defined duration has elapsed, the output goes to the
Final Fault State
value, entered in engineering units.
Output State in Program Mode
User Defined Value
Forces the output to whatever value is entered in the field. The value is entered in the engineering units defined by the scaling parameters for the channel.
When Communications Fail in Program Mode
Leave outputs in Program Mode state
Causes the output to behave as defined by the
Output State in Program Mode
selection.
When Communications Fail in Program Mode
Change outputs to Fault Mode state
Causes the output to behave as defined by the
Output State in Fault Mode
selection.
Engineering Units
Sets the unit of measure used for the channel.
High Signal
Sets one of the four constants in the scaling equation.
High Signal
is in terms of the input signal units and corresponds to
High Engineering
when scaled.
High Signal
must be greater than
Low Signal
.
High Engineering
Sets one of the four constants in the scaling equation.
High Engineering
corresponds to
High Signal
and helps determine the engineering units that the signal values scale into.
Low Signal
Sets one of the four constants in the scaling equation.
Low Signal
is in terms of the input signal units and corresponds to
Low Engineering
when scaled.
Low Engineering
Sets one of the four constants in the scaling equation.
Low Engineering
corresponds to
Low Signal
and helps determine the engineering units that the signal values scale into.
Output State in Fault Mode
Hold Last State
Causes the output to remain at the last value sent from the controller prior to loss of communication.
Output State in Fault Mode
User Defined Value
Forces the output to whatever value is entered in the field. The value is entered in the engineering units defined by the scaling parameters for the channel.
Fault State Duration
Determines the length of time the Fault Value parameter value is held prior to the Final Fault State.
Final Fault State Value
Defines the value, in Engineering Units, to which the output goes after the Fault State Duration time expires.
Diagnostics
Opens the diagnostics dialog box to view the diagnostics information for the channel.
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