Channels view parameters (1756-IR12, 1756-IT16)

The
Channels
 view includes these parameters:
TIP:
The parameters cannot be edited when there is a transition to Run mode.
Parameter
1756-IR12 Description
1756-IT16 Description
Copy Channel Configuration
Select a channel to copy the properties to another channel.
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.
Input Type
Displays
RTD
 as a read-only value.
Displays
Thermocouple
 as a read-only value.
Sensor Offset
Specifies a sensor offset value to compensate for any known error on the sensor or channel to which the sensor is connected. The value is set in
Temperature Units
 or
Ohms
 and is added to the input value.
Input Range
Specifies the input range for an RTD when the
Sensor Type
 is
Ohm
.
 For maximum resolution, select the range that most closely accommodates the anticipated maximum resistance value. Valid options:
  • 0 Ohm to 500 Ohms
     (default value)
  • 0 Ohm to 1000 Ohms
  • 0 Ohm to 2000 Ohms
  • 0 Ohm to 4000 Ohms
When the
Sensor Type
 is
not
Ohm
, the
Input Range
 shows the resistance range used by the device for optimal performance based on the RTD type. These ranges are read only and cannot be changed.
Shows the input range
for the 1756-IT16 device as
-100 mV to 100 mV
.
This value is read-only and cannot be changed.
10 Ohm Copper Offset
Specifies an offset value that is within the range from -1.00 through 1.00 Ohms for an RTD with the
Sensor Type
 set to
10 Ohm CU 427
.
The default value is 0.00 Ohms. This value can compensate for any Copper RTD errors and is added to the input reading before linearization.
N/A
Temperature Units
Specifies the temperature unit for sensor types that are not Ohms for the 1756-IR12 and for sensor types that are not mV for the 1756-IT16. Valid options are:
  • Celsius
    (default value)
  • Fahrenheit
  • Kelvin
  • Rankine
Digital Filter
Specifies the time constant, in milliseconds, for a digital first order lag filter on the input. The digital filter smooths input data noise transients for the selected channel on the module. A value of 0 disables the filter.
Enter a value that is in the range from 0 through 32767 ms. A value of 0 ms means no filtering.
Sensor Type
Specifies the sensor type for the 1756-IR12 channel:
  • Ohm
  • 100 Ohm
    PT 385
    (default value)
  • 200 Ohm PT 385
  • 500 Ohm PT 385
  • 1000 Ohm PT 385
  • 100 Ohm PT 3916
  • 200 Ohm PT 3916
  • 500 Ohm PT 3916
  • 1000 Ohm PT 3916
  • 10 Ohm CU 427
  • 120 Ohm NI 672
  • 100 Ohm NI 618
  • 120 Ohm NI 618
  • 200 Ohm NI 618
  • 500 Ohm NI 618
Specifies the sensor type for the 1756-IT16 channel:
  • mV
  • TC Type B
  • TC Type C
  • TC Type E
  • TC Type J
    (default value)
  • TC Type K
  • TC Type N
  • TC Type R
  • TC Type S
  • TC Type T
  • TC Type TXK/XK (L)
  • TC Type D
Notch Filter
Specifies a frequency for the first notch of the filter for all of the channels. Selection of the filter influences the analog to digital output data rate and changes the module throughput. Module throughput is a function of the number of inputs used and the first notch filter.
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