Input Tags - Allen-Bradley 1756-IF8I User Manual

Appendix A Analog I/O Module Tag Definitions
Table 37 - 1756-IT16 Module - Input Tags
Tag Name
Fault
CIPSyncValid
CIPSyncTimeout
CIPSyncOffsetJump
CJ[x].Fault
CJ[x].Uncertain
CJ[x].Underrange
CJ[x].Overrange
CJ[0].Data
Ch[x].Fault
Ch[x].Uncertain
Ch[x].Underrange
Ch[x].Overrange
Ch[x].CalibrationFault
Ch[x].Calibrating
Ch[x].CalGoodLowRef
Ch[x].CalBadLowRef
202

Input Tags

The following table describes the Input tags associated with the 1756-IT16
module.
Data Type Definition
DINT Standard Analog Fault mask – controller sets bottom 16
bits on connection loss.
BOOL Indicates whether the module is synchronized to a valid
CIP Sync time master on the backplane.
BOOL Indicates whether a valid time master on the backplane
has timed out.
BOOL Indicates a significant jump, that is, 1 ms or greater, in the
CST and CIP Sync times sent from the Time Master to the
module. (The Time Master sends the CST and CIP Sync
times to the module every second.)
We recommend that you refresh the Diagnostic Assembly
to get more data on the jump if precise time tracking is
important to your application.
BOOL Quality of channel data.
BOOL Channel data can be imperfect.
BOOL Indicates that Cold Junction Channel x is below 0 °C.
BOOL Indicates that Cold Junction Channel x is above 86 °C.
REAL Indicates the CJ input data in °C.
BOOL Indicates the quality of Input Data.
BOOL Indicates the Input Data can be imperfect.
BOOL Input is beneath absolute minimum for this channel. If
temperature, set when beneath minimum for that
SensorType.
BOOL Input is above absolute maximum for this channel. If
temperature, set when above maximum for that
SensorType.
BOOL Indicates the last attempted calibration for this channel
failed.
BOOL Indicates the channel is currently being calibrated.
BOOL Indicates that a valid Low Reference signal has been
sampled on this channel.
BOOL Indicates that an invalid Low Reference signal has been
sampled on this channel.
You must correct this condition to successfully calibrate
the module.
If calibration is aborted with an invalid Low Reference
signal, the I.Ch[x].CalibrationFault tag is set for this
channel until a successful calibration is performed.
Rockwell Automation Publication 1756-UM540E-EN-P - December 2017
Valid Values
0000_0000= Connection is good
B0 = CIP Sync is not available
B1 = A valid time master was
detected on the backplane, but the
time master has timed out. The
module is currently using its local
clock with old synchronized time
data.
B2
• 0 = Good
• 1 = Bad
• 0 = Good
• 1 = Uncertain
B2
B3
• 0 = Good
• 1 = Bad
• 0 = Good
• 1 = Uncertain
B2
B3
B9
B10
B11
B12