Rockwell Automation 1747-L40 SLC 500 Fixed Hardware Style - Manual (Page 59)

Chapter 4
Installing Your Hardware Components
4–4
Always turn off power to the controller before inserting or removing the
memory module. This guards against possible damage to the module and
also undesired processor faults. Memory modules are mounted in carriers
and have connectors that are “keyed” to guard against improper installation.
!
ATTENTION: To avoid potential damage to the memory
modules, handle them by the ends of the carrier or edges of the
plastic housing. Skin oil and dirt can corrode metallic surfaces,
inhibiting electrical contact. Also, do not expose memory
modules to surfaces or areas that may hold an electrostatic
charge. Electrostatic charges can alter or destroy memory.
1. Always turn off power to the controller before inserting or removing the
memory module. This guards against possible damage to the module and
also undesired processor faults.
!
ATTENTION: When power is applied to the controller
hazardous electrical potentials exist under the front cover. See
page 2–8 for more information.
2. Remove the processor compartment cover.
3. Locate the socket on the PC board.
Socket
4. Position the module correctly over the socket and press it firmly in place.
(The memory module is keyed.)
1747-M1, -M2, -M3
5. Replace the cover on the SLC controller and restore power.
Installing Your Memory Module