Rockwell Automation T3480 ICS Regent Guarded Analog Output Modules - Manual (Page 5)

Guarded Analog Output Modules (T3480)
P D - 6 0 2 6 M a r - 0 6
5
unit is set to shutdown, the red SHUTDOWN indicator will
turn on when the communications with the controller are lost.
If the I/O unit is set to hold, the SHUTDOWN indicator will
always be off (see page 11, Fault Mode Jumper).
When the module is installed in the I/O chassis or when logic
power (from the I/O power supply modules) is first applied to
the module, it will be in the shutdown mode until the first
output scan, regardless of the fault mode jumper settings.
Also, removing two I/O transceiver modules, two I/O power
supply modules, or two power legs will cause the module to be
in the shutdown mode.
Note: