Channels view parameters (1756-OF8I)

The
Channels
 view includes these parameters:
TIP:
The parameters cannot be edited when there is a transition to Run mode.
Parameter
Description
Channel
Displays the channel number to which this configuration applies.
Disable
Determines whether the channel is enabled or disabled. Select the checkbox when the channel is not used. Disabling the channel prevents erroneous fault reporting (for example, underrange) and also prevents the FLT LED from illuminating.
Tip
: Parameters are unavailable when the channel is disabled.
Output Type
Specifies the output type as either
Current
 or
Voltage
.
Current is selected by default.
Output Range
Specifies the operating range for the channel.
If
Current
 is the selected
Output Type
, the only available output range is 0mA to 20mA.
If
Voltage
 is the selected
Output Type
, select one of these output ranges:
  • -10V to 10V (default value)
  • 0V to 5V
  • 0V to 10V
Output State During
Program Mode
Specifies the channel output state behavior when the controller is placed in Program Mode.
  • Hold Last State
     - Output remains at the last value sent from the controller prior to being placed in Program Mode.
  • User Defined Value
     - Forces the output to the user-defined value when controller is placed in Program Mode. Enter the value in the engineering units defined by the scaling parameters for the channel.
Output State During
Fault Mode
Specifies the channel output state behavior when the controller is faulted and is no longer communicating to the device.
  • Hold Last State
     - Output remains at the last value sent from the controller prior to loss of communication.
  • User Defined Value
     - Output to whatever value is entered in the field. Enter the value in the engineering units defined by the scaling parameters for the channel.
High Signal
Defines the maximum signal produced by the channel.
This value must be greater than the
Low Signal
 value.
Low Signal
Defines the lowest signal produced by the channel.
This value must be less than the
High Signal
 value.
Units (Signal)
Shows the unit of measurement for
High Signal
 and
Low Signal
.
High Engineering
The engineering units that corresponds with a signal value equal to High Signal.
This value cannot be equal to the
Low Engineering
value.
Valid values are in the range of -9999999 to 99999999 (float).
Low Engineering
The engineering units that corresponds with the signal value equal to Low Signal.
This value cannot be equal to the
High Engineering
 value.
Valid values are in the range of -9999999 to 99999999 (float).
Units (Engineering)
Shows the unit of measurement for
High Engineering
 and
Low Engineering
 and for the channel’s input value.
Provide Feedback
Have questions or feedback about this documentation? Please submit your feedback here.