Rockwell Automation 1756-XXXX ControlLogix Digital I/O Modules - Manual (Page 207)

Rockwell Automation Publication 1756-UM058G-EN-P - November 2012 207
Tag Definitions Appendix B
CIPSyncTimeout BOOL CIP Sync Timeout—Indicates whether a valid time master on the backplane has timed
out.
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 currently using its local clock. Connection = Data
Output Data = Scheduled per
Point
or
Connection = Listen Only
Output Data = None
LateScheduleCount INT Late Schedule Count—Increments each time a schedule is received late after its
scheduled time. The counter rolls over every 65,535 late schedules.
If a late schedule is the most recent schedule for a point, the output will still be driven to
new state.
Monitoring the late schedule count may be useful to determine whether network delays or
connection losses are impacting schedules. Connection = Data
Output Data = Scheduled per
Point
LostScheduleCount INT Lost Schedule Count—Increments each time the Schedule.SequenceNumber output
tag skips a value. A skipped sequence number may indicate a lost schedule. The counter
rolls over every 65,535 lost schedules. Connection = Data
Output Data = Scheduled per
Point
LocalClockOffset DINT Local Clock Timestamp—Indicates the offset between the current CST and the CIP Sync
value when a valid CIP Sync time is available. Connection = Data
Output Data = Scheduled per
Point
or
Connection = Listen Only
Output Data = None
OffsetTimestamp DINT Timestamp Offset—Indicates when the CIP Sync LocalClockOffset and GrandMasterID
were last updated in CIP Sync format. Connection = Data
Output Data = Scheduled per
Point
or
Connection = Listen Only
Output Data = None
GrandMasterClockID DINT Grandmaster Clock ID—Indicates the ID of the CIP Sync Grandmaster to which the
module is synced. Connection = Data
Output Data = Scheduled per
Point
or
Connection = Listen Only
Output Data = None
Timestamp DINT Timestamp—A 64-bit CIP Sync timestamp of the last new output data or FuseBlown
event. Connection = Data
Output Data = Scheduled per
Point
or
Connection = Listen Only
Output Data = None
Schedule.State SINT Schedule State—Indicates the current sequence number of schedules stored in the
output data. Connection = Data
Output Data = Scheduled per
Point
Schedule.SequenceNumber SINT Schedule Sequence Number—The data echo indicating the sequence number of the
schedule. Connection = Data
Output Data = Scheduled per
Point
Table 52 - 1756-OB16IEFS Module Input Data Tags—Scheduled per Point Output (continued)
Name Data Type Tag Definition Module Definition