142 Rockwell Automation Publication 5094-UM001C-EN-P - April 2019
Appendix B Module Tag Definitions
Ptxx.Uncertain BOOL Indicates that the point data can be inaccurate but the 
degree of inaccuracy is not known.
For more information, see Module Data Quality Reporting
 
on page 47.
• 0 = Good data
•1 = Uncertain data
If the tag is set to 1, you must troubleshoot the 
module to correct the cause of the inaccuracy.
IMPORTANT: Once the condition that causes 
the tag to change to 1 is removed, the tag 
automatically resets to 0.
Ptxx.Chatter BOOL Indicates if the input is chattering per the ChatterTime and 
ChatterCount settings.
• 0 = Normal
•1 = Input is chattering
Ptxx.TimestampOverflowOffOn BOOL Indicates an Off to On time stamp was lost in a discrete 
product. If TimestampLatchEn is set then a new time 
stamp was not recorded because one is already latched. If 
TimestampLatchEn is clear a timestamp was overwritten.
0 or 1
Ptxx.TimestampOverflowOnOff BOOL Indicates an On to Off time stamp was lost in a discrete 
product. If TimestampLatchEn is set then a new time 
stamp was not recorded because one is already latched. If 
TimestampLatchEn is clear a timestamp was overwritten.
0 or 1
Ptxx.CIPSyncValid BOOL Indicates whether the module is synced with a 1588 
master.
• 0 = CIP Sync is not available
•1 = CIP Sync is available
Ptxx.CIPSyncTimeout BOOL Indicates that the module was once synced with a 1588 
master, but is not now due to a timeout.
• 0 = A valid time master has not timed out.
• 1 = A valid time master was detected on the 
backplane, but the time master has timed out. 
The module is using its local clock and can be 
drifting away from the last known time 
master.
Ptxx.TimestampOffOnNumber INT An Off to On timestamp identifier for the currently 
produced timestamp.
All values.
Ptxx.TimestampOnOffNumber INT An On to Off timestamp identifier for the currently 
produced timestamp.
All values.
Ptxx.TimestampOffOn LINT 64 bit Timestamp corresponding to when a change of 
state Off to On was recorded at the input.
All values.
Ptxx.TimestampOnOff LINT 64 bit Timestamp corresponding to when a change of 
state On to Off was recorded at the input.
All values.
Table 28 - 5094-IB16 Module Input Tags
 Name Data Type Definition Valid Values