Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules - Manual (Page 184)

184 Publication 1756-UM009C-EN-P - December 2010
Chapter 8 Isolated Analog Output Modules (1756-OF6CI and 1756-OF6VI)
Module Fault Word Bits – Integer Mode
In integer mode, Module Fault word bits (bits 15…11) operate exactly as
described in floating point mode. The table lists tags that are found in the
Module Fault Word.
Channel Fault Word Bits – Integer Mode
In integer mode, Channel Fault word bits (bits 5…0) operate exactly as
described in floating point mode for calibration and communications faults.
The table lists the conditions that set
all Channel Fault word bits.
Your logic should monitor the Channel Fault bit for a particular output, if you
either:
• set the high and low limit alarms outside your operating range
• disable output limiting.
Tag Description
Analog Group
Fault This bit is set when any bits in the Channel Fault word are set. Its tag
name is AnalogGroupFault.
Output Group
Fault This bit is set when any bits in the Channel Fault word are set. Its tag
name is OutputGroupFault.
Calibrating This bit is set when any channel is being calibrated. When this bit is
set, all bits in the Channel Fault word are set. Its tag name is
Calibrating.
Calibration Fault This bit is set when any of the individual Channel Calibration Fault bits
are set. Its tag name is CalibrationFault.
This condition sets all Channel
Fault word bits And causes the module to display the
following in the Channel Fault word bits
A channel is being calibrated ’003F’ for all bits
A communications fault occurred
between the module and its
owner-controller ’FFFF’ for all bits