Fault mode jumper, Keying – Rockwell Automation T7485 ICS Regent+Plus Isolated Guarded Output Modules User Manual
Page 13
 
Isolated Guarded Digital Output Module (T7485)
 
P D - 7 0 3 4 M a r - 0 6  
13
Fault Mode Jumper
The fault mode jumper is located behind the ID switch cover 
in the lower left-hand corner of each I/O chassis. The position 
of the fault mode jumper determines the module's response to 
system level faults. The fault mode jumper’s position will 
cause all output modules in the I/O chassis to either shutdown 
(turn off all outputs) or to hold (hold the last state) after a 
system level failure occurs. An example of a system level 
failure is the failure of two processor modules. 
Keying
The I/O chassis can be physically keyed to prevent accidental 
damage caused by inserting a module into a slot wired for a 
different module type. Figure 7 illustrates how the slot keys 
are installed on the I/O chassis slot field wiring connectors. 
The slot key positions for the isolated Guarded output module 
are listed in Table 3. 
Table 3. Slot Key Positions.
Module
Upper
Connector
Lower
Connector
T7485
12
3