Rockwell Automation Publication 1756-UM540E-EN-P - December 2017
207
Analog I/O Module Tag Definitions
Appendix A
Ch[x].RampAlarm
BOOL
Indicates that the channel is currently limited to changing
at the
C.Ch[x].MaxRampRate
tag value or is latched.
•
0 = Channel is not limited to the
C.Ch[x].MaxRampRate
tag value
or latched
•
1 = channel is limited
Ch[x].NotANumber
BOOL
Indicates that the last value last received for the
O.Ch[x].Data
tag was not a number.
•
0 = Last channel data received
was a number
•
1 = Last channel data received
was not a number
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 that the channel is not calibrated or the last
attempted calibration for this channel failed.
If the last calibration failed, this tag is cleared, that is, set
to 0, when power is cycled to the module.
•
0 = Calibration did not fail
•
1 = Calibration failure
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 value has been
received on the channel.
•
0 = Valid Low Reference value
has not been received on this
channel
•
1 = Valid Low Reference value
has been received on this
channel
Ch[x].CalBadLowRef
BOOL
Indicates that invalid Low Reference data has been
received 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 or the
module is Reset or RIUP'ed.
•
0 = Invalid Low Reference value
has not been received on this
channel
•
1 = Invalid Low Reference value
has been received on this
channel
Ch[x].CalGoodHighRef
BOOL
Indicates that a valid High Reference value has been
received on this channel.
•
0 = Valid High Reference value
has not been received on this
channel
•
1 = Valid High Reference value
has been received on this
channel
Ch[x].CalBadHighRef
BOOL
Indicates that an invalid High Reference value has been
received on this channel.
You must correct this condition to successfully calibrate
the module.
If calibration is aborted with an invalid High Reference
value, the
I.Ch[x].CalibrationFault
tag is set for this
channel until a successful calibration is performed or the
module is Reset or RIUP'ed.
•
0 = Invalid High Reference value
has not been received on this
channel
•
1 = Invalid High Reference value
has been received 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
.
Table 39 - 1756-OF8I Module - Input Tags (continued)
Tag Name
Data Type
Definition
Valid Values
