Rockwell Automation 1756-OF8I ControlLogix Eight-channel Isolated Analog I/O Modules - Manual (Page 195)

Rockwell Automation Publication 1756-UM540A-EN-P - May 2014 195
Isolated Analog I/O Module Tag Definitions Appendix A
Ch[x].InHold BOOL Indicates that the channel is currently holding until the
received O.Ch[x].Data tag value is within 0.1% of the
current I.Ch[x].Data tag value. • 0 = Channel is not holding
• 1 = Channel is holding
Ch[x].CalibrationFault BOOL Indicates the last attempted Calibration for this
channel failed.
This tag is cleared, that is, set to 0, when power is cycled
to the module. • 0 = Calibration did not fail
• 1 = Calibration failed
Ch[x].Calibrating BOOL Indicates the channel is currently being calibrated. • 0 = Channel is not being
calibrated
• 1 = Channel is being calibrated
Ch[x].CalGoodLowRef BOOL Indicates that a valid Low Reference signal has been
sampled on the channel. • 0 = Valid Low Reference signal
has not been sampled on this
channel
• 1 = Valid Low Reference signal
has been sampled on this
channel
Ch[x].CalBadLowRef 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. • 0 = Invalid Low Reference signal
has not been sampled on this
channel
• 1 = Invalid Low Reference signal
has been sampled on this
channel
Ch[x].CalGoodHighRef BOOL Indicates that a valid High Reference signal has been
sampled on this channel. • 0 = Valid High Reference signal
has not been sampled on this
channel
• 1 = Valid High Reference signal
has been sampled on this
channel
Ch[x].CalBadHighRef BOOL Indicates that an invalid High 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 High Reference
signal, the I.Ch[x].CalibrationFault tag is set for this
channel until a successful calibration is performed. • 0 = Invalid High Reference
signal has not been sampled on
this channel
• 1 = Invalid High Reference
signal has been sampled on this
channel
Ch[x].CalSuccessful BOOL Indicates calibration on this channel is complete and the
Calibrating state has been exited.
This tag remains set after valid calibration as long as
connection is open. • 0 = Calibration was not
successful
• 1 = Calibration was successful
and calibrating state has been
exited.
Ch[x].Data REAL Output Data Echo data in scaled Engineering units. Any positive or negative value.
Determined by how you set the
scaling parameters on the channel.
For more information, see
Scaling
on page 37 .
Timestamp DINT[2] 64-bit timestamp value that indicates when any of the 8
channels were last updated with new Output Data.
This value is provided in terms of CIPSync time. Timestamp data
RollingTimestamp DINT 16-bit timestamp that ‘rolls’ from 0…32,767 ms.
Compatible with existing PID instruction to automatically
calculate sample deltas.
For more information on the Rolling Timestamp, see
page 21 .
0…32,767 ms
where 1 ms = 1 count
Table 27 - 1756-OF8I Module - Input Tags
Tag Name Size Definition Valid Values