Rockwell Automation 1769-IF4XOF2 Compact 8-Bit Low Resolution Analog I/O Combination Module - Manual (Page 31)

Publication 1769-UM008A-EN-P - November 2001
Installation and Wiring 3-9
Replacing a Single Module
within a System The module can be replaced while the system is mounted to a panel
(or DIN rail). Follow these steps in order:
1. Remove power. See attention note on 3-4.
2. On the module to be removed, remove the upper and lower
mounting screws from the module (or open the DIN latches
using a flat-blade or phillips-style screwdriver).
3. Move the bus lever to the right to disconnect (unlock) the bus.
4. On the right-side adjacent module, move its bus lever to the
right (unlock) to disconnect it from the module to be removed.
5. Gently slide the disconnected module forward. If you feel
excessive resistance, check that the module has been
disconnected from the bus, and that both mounting screws have
been removed (or DIN latches opened).
6. Before installing the replacement module, be sure that the bus
lever on the module to be installed and on the right-side
adjacent module are in the unlocked (fully right) position.
7. Slide the replacement module into the open slot.
8. Connect the modules together by locking (fully left) the bus
levers on the replacement module and the right-side adjacent
module.
9. Replace the mounting screws (or snap the module onto the DIN
rail).
TIP
It may be necessary to rock the module slightly
from front to back to remove it, or, in a
panel-mounted system, to loosen the screws of
adjacent modules.