Allen-Bradley 1756 Series, User Manual, Page: 54 / 136

54 Rockwell Automation Publication 1756-UM013B-EN-P - October 2019
Chapter 3 1756-IB16S Input Module Features
Fault and Status Reporting
The input modules send fault and status data with channel data to the owner and
listening controllers. The data is returned via module tags that you can monitor
in your Logix Designer application.
With some exceptions, the digital input modules provide the fault and data status
in a point-centric format. The tag names that include Ptxx represent point-
centric data in the table. The xx represents the point number.
Table 7 lists tags that are used on 1756-IB16S module.
For more information on fault reporting, see Appendix A, Troubleshoot Your
Module on page 103 .
IMPORTANT For more information on the valid values for each tag, see Appendix B,
Module Tag Definitions on page 113 .
Table 7 - 1756-IB16S Module - Fault and Data Status
Data Type Tag Name Triggering Event That Sets
Fault
ConnectionFaulted
(1)
The owner-controller loses its connection to the module.
Ptxx.Fault The point data quality is bad or the channel is set to Not Used.
Ptxx.ShortCircuit A short circuit condition exists on the point.
Testxx.Fault The point data quality is bad or the channel is set to Not Used.
Testxx.ShortCircuit A short circuit condition exists on the test point.
Testxx.FieldPowerOff A field power lost condition exists on the test point.
Status
RunMode The module is in Run Mode.
DiagnosticActive Indicates if any diagnostics are active or if the prognostics threshold is reached.
DiagnosticSequenceCount The count increments each time that a diagnostic condition is detected or removed.
Ptxx.Data The data currently at the point.
Ptxx.Uncertain The point data can be imperfect because an Over temperature or Critical Temperature condition exists.
Ptxx.Status The point state transitions from normal to faulted or faulted to normal.
Testxx.Readback A 24V DC power is present at the test output.
Testxx.Uncertain The test point data can be imperfect.
Testxx.Status The test point state transitions from normal to faulted or faulted to normal.
(1) This tag provides module-wide data an affects all channels simultaneously.