Rockwell Automation 1756-OF8H ControlLogix HART Analog I/O Modules - Manual (Page 171)

Rockwell Automation Publication 1756-UM533C-EN-P - February 2011 171
Tag Definitions Appendix A
Changed BOOL Decimal An operation was performed that changed the device’s configuration.
Malfunction BOOL Decimal The device detected a serious error or failure that compromises device operation.
AlarmStatus SINT Binary Indicates various alarms on the analog signal. Also sets Ch0Fault for Overrange, Underrange, and
CalFault.
HHAlarm BOOL Decimal AlarmStatus.0, If process alarms are configured to latch by setting Ch0Config.ProcessAlarmLatch
this bit remains set even after the condition returns to normal, until reset via explicit CIP message.
This message can be sent from the RSLogix 5000 Module Properties Alarm dialog box or from the
Logix controller via MSG instruction.
LLAlarm BOOL Decimal AlarmStatus.1, If Ch0Config.ProcessAlarmLatch is set, this alarm remains set until it is unlatched.
HAlarm BOOL Decimal AlarmStatus.2, If Ch0Config.ProcessAlarmLatch is set, this alarm remains set until it is unlatched
LAlarm BOOL Decimal AlarmStatus.3, If Ch0Config.ProcessAlarmLatch is set, this alarm remains set until it is unlatched.
RateAlarm BOOL Decimal AlarmStatus.4, Ch0Data changing faster than Ch0RateAlarmLimit.
Both positive and negative changes can cause this alarm.
If Ch0Config.RateAlarmLatch is set, this alarm remains set until it is unlatched.
Overrange BOOL Decimal AlarmStatus.5, Analog signal is greater than or equal to the maximum detectable signal. Because
the signal cannot be measured, it may be significantly above the maximum value.
Underrange BOOL Decimal AlarmStatus.6, Analog signal is less than or equal to the minimum detectable signal. Because the
signal cannot be measured, it may be significantly below the minimum value.
CalFault BOOL Decimal AlarmStatus.7, Set if an error occurs during calibration for Channel x, causing a bad calibration.
Also sets CalFault.
ExtDeviceStatus SINT Binary Extended device status byte.
Maintenance
Required BOOL Decimal Maintenance is needed.
DeviceVariableAlert BOOL Decimal Device variable alert.
PowerLow BOOL Decimal Low power.
PV REAL Float Primary value. This is the same value as signaled on the analog channel and is the most important
measurement made by this device.
SV REAL Float Secondary value.
TV REAL Float Third value.
FV REAL Float Fourth value.
PVStatus SINT Hex Primary status.
16#C0 = Connected.
16#00 = Not Connected.
SVStatus SINT Hex Secondary status.
16#C0 = Connected.
16#00 = Not Connected.
TVStatus SINT Hex Third status
16#C0 = Connected.
16#00 = Not Connected.
FVStatus SINT Hex Fourth status.
16#C0 = Connected.
16#00 = Not Connected.
Ch01 AB:1756_IF8H_HARTDataAll_Struct:I:0, Channel 01 analog and HART data.
Ch02 AB:1756_IF8H_HARTDataAll_Struct:I:0, Channel 02 analog and HART data.
Ch03 AB:1756_IF8H_HARTDataAll_Struct:I:0, Channel 03 analog and HART data.
Ch04 AB:1756_IF8H_HARTDataAll_Struct:I:0, Channel 04 analog and HART data.
Table 61 - Analog and HART by Channel (AB:1756-IF8H_AnalogHARTbyChannel:I:0)
Member Name Type Style Description