Rockwell Automation 1769-SDN Compact I/O DeviceNet Scanner Module User Manual - Manual (Page 31)

Publication 1769-UM009E-EN-P - August 2009 31
Installation and Wiring Chapter 3
Replace the Scanner
Module within a System The scanner module can be replaced while the system is mounted to a panel
(or DIN rail) once power is removed.
1. Remove power.
2. Remove the DeviceNet cable from the scanner module by removing the
DeviceNet connector.
3. Remove the upper and lower mounting screws from the scanner module
(or open the DIN rail latches using a flat-blade screwdriver).
4. On the scanner module to be replaced and the right-side adjacent
module (or end cap if the scanner module is the last module in the
bank), move the bus levers to the right (unlock) to disconnect the
scanner module from the adjacent modules.
5. Gently slide the disconnected scanner module forward.
6. If you feel excessive resistance, make sure that you disconnected the
scanner module from the bus and that you removed both mounting
screws (or opened the DIN latches).
It may be necessary to rock the scanner module slightly from front to
back to remove it, or, in a panel-mounted system, to loosen the screws
of adjacent modules.
7. Before installing the replacement scanner, be sure that the bus lever on
the right-side adjacent module is in the unlocked (fully right) position.
8. Slide the replacement scanner module into the open slot.
9. Connect the scanner module and modules together by locking (fully left)
the bus levers on the replacement scanner module and the right-side
adjacent module or end cap.
10. Replace the mounting screws (or snap the scanner module onto the
DIN rail).
11. Replace the DeviceNet cable on the scanner module by attaching the
connector to the scanner.
12. Restore the scanner module configuration using RSNetWorx for
DeviceNet software.
IMPORTANT
Be sure that the new module has the same node address
and communication rate as the module that was
replaced.