Spectrum Controls 1756sc-IF8u - Manual (Page 64)

52 ControlLogix ™ Universal Analog Input Module
Channel related status tags:
The following channel related tags are preceded by the tag name
IF8U_Input.ChannelStatus[X] where X is the channel number 0-7
.Underrange
Indicates the channel’s input is equal to or less than the minimum value for
the selected range or open wire.
Note: The (-10 to +10vdc) input type does not support this function.
.Overrange
Indicates the channel’s input is equal to or above the maximum value for
the selected range.
Note: The (-10 to +10vdc) and (0 to 10vdc) input types do not support this
function.
.CalFault
Status bit indicating if the channel has a “Bad” calibration means that the
third attempt to autocalibrate the channel failed with an error and was
aborted.
.RateAlarm
Alarm bit which gets set when the input channel’s rate of change exceeds
the configured RateAlarmLimit. Remains set until the rate of change
drops below the configured limit unless latched via RateAlarmLatch in the
configuration.
.LAlarm
Low alarm bit which is set when the input signal moves beneath the
configured low alarm trigger point (LAlarmLimit). Remains set until the
input signal moves above the trigger point, unless latched via
ProcessAlarmLatch or the input is still within the configured alarm
deadband of the low alarm trigger point.
.HAlarm
High alarm bit which is set when the input signal moves above the
configured high alarm trigger point(HAlarmLimit). Remains set until the
input signal moves below the trigger point, unless latched via
ProccessAlarmLatch or the input is still within the configured alarm
deadband of the high alarm trigger point.
.LLAlarm
Low low alarm bit which is set when the input signal moves beneath the
configured low low alarm trigger point(LLAlarmLimit). Remains set until
the input signal moves above the trigger point, unless latched via
ProccessAlarmLatch or the input is still within the configured alarm
deadband of the low low alarm trigger point.