Rockwell Automation 1769-IF4FXOF2F Compact Combination Fast Analog I/O Module - Manual (Page 52)

52 Publication 1769-UM019A-EN-P - October 2008
Chapter 3 Module Data, Status, and Channel Configuration
Fault Value
Use each output channel’s fault value word to set the analog values
for the outputs to assume when the system enters the Fault mode.
Valid values depend upon the type/range and data format selected for
each output channel or the user-defined output clamp values. If the
value you enter is outside of the full range for the output type/range
and data format selected, or outside of the limits set by the channel’s
low and high clamp values, the module generates a configuration
error. The default value is 0.
Program to Fault Enable (PFE)
If a system currently in Program mode faults, this setting determines
whether the program or fault value is applied to the output. If the
selection is enabled (PFE = 1), the module applies the Fault mode
data value. If the selection is disabled (PFE = 0), the module applies
the Program mode data value. The default setting is disabled.
Clamping (Limiting)
Clamping limits the outputs from the module to within a
user-configured range when the controller commands an output to a
value outside of that range. The module supports a high clamp value
and a low clamp value for each output channel. Once clamps are set
for a module, any data received from the controller that exceeds those
clamp values sets an appropriate clamp status bit and transitions the
output to that limit but not beyond.
TIP
N
Not all controllers support alternate output states and this
function. Refer to your controller’s user manual for details.
TIP
N
Not all controllers support alternate output states and this
function. Refer to your controller’s user manual for details.