Rockwell Automation 1756-OF8I ControlLogix Eight-channel Isolated Analog I/O Modules - Manual (Page 181)

Rockwell Automation Publication 1756-UM540A-EN-P - May 2014 181
Isolated Analog I/O Module Tag Definitions Appendix A
Ch[x].RateAlarmUnlatch BOOL Unlatches a set Rate Alarm at the first instance of the bit
transitioning from 0 to 1.
For example, if the controller sends data for this tag in
successive instances as 0, 1, 1, 1, 1, the module unlatches
the Process alarm when it receives the first 1.
The following instances of this tag value being 1 do not
impact the Process alarm unlatching. • 0 = Rate Alarm remains latched
• 1 = Rate Alarm unlatches
Ch[x].Calibrate BOOL Initiates the Calibration process.
This tag must remain set until a valid Low Reference and
High Reference values are applied to the input.
If the tag value transitions to 0 before calibration is
finished, the process stops and calibration fails. • 0 = Cali bration process is
not started
• 1 = Calibrtion process is started
Ch[x].CalLowReference BOOL Rising edge triggers the Low Calibration at the Low
Reference Point for the current C.Ch[x]nputRange tag
value.
A valid Low Reference signal must be connected to the
channel before setting this tag. • 0 = Channel data value has not
passed the Low Reference Point
value
• 1 = Channel data value has
passed the Low Reference Point
value
Ch[x].CalHighReference BOOL Rising edge triggers a High Calibration at the High
Reference Point for the current C.Ch[x]nputRange tag
value.
A valid High Reference signal must be connected to the
channel before setting tag. • 0 = Channel data value has not
passed the High Reference Point
for the current InputRange tag
value
• 1 = Channel data value has
passed the High Reference Point
for the current InputRange tag
value
Ch[x].SensorOffset REAL Compensates for any known error on the sensor or
channel to which the sensor is connected. Any
(We recommend that you use a
value in the channel’s operating
range.)
0.0 = default
Table 22 - 1756-IF8I Module - Output Tags
Tag Name Size Definition Valid Values