Rockwell Automation 1756-IF4FXOF2F ControlLogix High-speed Analog I/O Module - Manual (Page 53)

Rockwell Automation Publication 1756-UM005B-EN-P - January 2013 53
Module Features Chapter 3
Output Channel Status Word Bits
Table 11 defines the Output Channel Status word bits.
Table 11 - Output Channel Status Word Bit Descriptions
Bit Name Description
Bit 8 I.Out[x].ChanFault This bit matches the state of I.OutxFault bits (4 & 5) in the Channel Fault word, except
when a communication fault occurs. If a communication fault occurs between the
module and its owner-controller, the I.OutxFault bit is set but this bit is not set.
Bit is set if one of the following events occurs:
• The module is being calibrated.
• Low limit alarm is set on the output channel.
• High limit alarm is set on the output channel.
Bit 7 I.Out[x].CalFault Bit is set if an error occurs, and is not corrected, during calibration for that channel.
Bit 5 I.Out[x].WireOff Bit is set only if the configured Output Range is 0…20 mA, and the circuit becomes
open due to a wire falling or being cut when the output being driven is above
0.1 mA. The bit will remain set until correct wiring is restored.
Bit 4 I.Out[x].NotANumber Bit is set when the output value received from the controller is not a number (the
IEEE NAN value). In this case, the output channel holds its last state.
Bit 3 I.Out[x].InHold Bit is set when the output channel is currently holding. The bit resets when the
requested Run mode output value is within 0.1% of full-scale of the current echo
value.
Bit 2 I.Out[x].RampAlarm Bit is set when the output channel’s requested rate of change would exceed the
configured maximum ramp rate. It remains set until the output reaches its target
value and ramping stops. If the bit is latched, it remains set until it is unlatched.
Bit 1 I.Out[x].LLimitAlarm Bit is set when the requested output value is beneath the configured low limit value.
It remains set until the requested output is above the low limit. If the bit is latched, it
remains set until it is unlatched.
Bit 0 I.Out[x].HLimitAlarm Bit is set when the requested output value is above the configured high limit value. It
remains set until the requested output is below the high limit. If the bit is latched, it
remains set until it is unlatched.