Module Data Types - 1794-IT8

The tables below describe the module-defined data types supplied with the 1794-IT8 module. These tables include information for input (as indicated by an "I") and configuration (as indicated by a "C").
Module-defined Data Type: AB:1794_IT8:I:0
Member Name
Type
Default
Display Style
Description
Fault
DINT
Binary
Fault - Used for Input Data Validation0 = Valid Data1 = Invalid Data - if the connection to the module has been lost, or if the module has a severe hardware fault, the lower 8 members are set to 1.
Ch0Data
INT
Channel read input data for Channel 0
Ch1Data
INT
Channel read input data for Channel 1
Ch2Data
INT
Channel read input data for Channel 2
Ch3Data
INT
Channel read input data for Channel 3
Ch4Data
INT
Channel read input data for Channel 4
Ch5Data
INT
Channel read input data for Channel 5
Ch6Data
INT
Channel read input data for Channel 6
Ch7Data
INT
Channel read input data for Channel 7
Alarms
INT
Ch0UnderrangeAlarm
These bits are set if the input signal is below the input channel’s minimum range
Ch1UnderrangeAlarm
Ch2UnderrangeAlarm
Ch3UnderrangeAlarm
Ch4UnderrangeAlarm
Ch5UnderrangeAlarm
Ch6UnderrangeAlarm
Ch7UnderrangeAlarm
Ch0OverrangeAlarm
These bits are set if 1) the input signal is above the input channel’s maximum range or 2) an open detector is detected.
Ch1OverrangeAlarm
Ch2OverrangeAlarm
Ch3OverrangeAlarm
Ch4OverrangeAlarm
Ch5OverrangeAlarm
Ch6OverrangeAlarm
Ch7OverrangeAlarm
Status
INT
Binary
CJUnderRange
This bit is set if the cold junction temperature is below 0° C
CJOverRange
This bit is set if the cold junction temperature is above 70° C
BadTCTypeSelected
This bit is set if an invalid thermocouple type is selected.
PowerUp
This bit is set (1) until configuration data is received by the module.
CriticalError4
If any critical error bits are set on, return the module to the factory for repair
CriticalError5
CriticalError6
Reserved (bit 7)
CalibrationOutOfRange
Set to 1 if a reference signal is out of range during calibration
CalibrationDone
Set to 1 after an initiated calibration cycle is complete
CalibrationBad
Set to 1 if the channel has not had a valid calibration
Reserved (bits 11-15)
Module-defined Data Type: AB:94_IT8:C:0
Member Name
Type
Default
Display Style
Description
Config1
SINT
Binary
ModuleDataType0
These bits used in combination as follows:
4 = Degrees C (default)
5 = Degrees F
6 = Bipolar counts scaled between -32768 and 32767
7 = Unipolar counts scaled between 0 and 65535
ModuleDataType1
FixedFilterEn
When set to 1, a software digital filter is enabled. This filter settles to 100% of a Full Scale step input in 60 times the selected first notch filter time.
NotchFrequency3
These bits are used in combination as follows:
0 0 0 10 Hz (default)
0 0 1 25 Hz
0 1 0 50 Hz
0 1 1 60 Hz
1 0 0 100 Hz
1 0 1 250 Hz
1 1 0 500 Hz
1 1 1 1000 Hz
NotchFrequency4
NotchFrequency5
GainOffsetCalibration
This bit is set during gain calibration, reset during offset calibration
CalibrationClock
This bit must be set to 1 to prepare for a calibration cycle; then reset to 0 to initiate calibration
Config2
INT
Binary
Ch0RTDType0
Ch0RTDType1
Ch0RTDType2
Ch0RTDType3
Ch1RTDType4
Ch1RTDType5
Ch1RTDType6
Ch1RTDType7
Ch2RTDType8
Ch2RTDType9
Ch2RTDType10
Ch2RTDType11
Ch3RTDType12
Ch3RTDType13
Ch3RTDType14
Ch3RTDType15
Config3
INT
Binary
Ch4RTDType0
Ch4RTDType1
Ch4RTDType2
Ch4RTDType3
Ch5RTDType4
Ch5RTDType5
Ch5RTDType6
Ch5RTDType7
Ch6RTDType8
Ch6RTDType9
Ch6RTDType10
Ch6RTDType11
Ch7RTDType12
Ch7RTDType13
Ch7RTDType14
Ch7RTDType15
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