Rockwell Automation 1757-SWKIT4000 ProcessLogix R400.0 Installation and Upgrade Guide - Manual (Page 162)

Publication 1757-IN040B-EN-P - March 2002
7-4 Firmware Maintenance Procedures
Upgrading Hardware
Component Firmware
About Firmware Upgrades
Each ProcessLogix software version release includes files for updating
the firmware version in system hardware components to levels
compatible with the given release. This means you must use the
ProcessLogix Engineering Tools utility called Network Tools
(NTOOLS) to check that the firmware versions for the hardware in
your network are compatible and to upgrade them as required before
initiating control operations.
If this is the first time you have used Network Tools on this PC, refer
to Making First Time Network Tools Settings on page 8-9.
After a ProcessLogix Server upgrade, you must always upgrade the
firmware in the Control Processor module (1757-PLX52) and the Serial
Interface module (TC-MUX021) to match the current ProcessLogix
software version before you can download a control strategy.
ATTENTION
!
Be certain that your process is off control before you
begin any upgrade procedure. This means the
1757-PLX52 should be in the Idle state.
IMPORTANT
Firmware versions for these modules are not
qualified for backward compatibility. For example, if
you try to use a 1757-PLX52 with a firmware version
that is compatible with R400.0 with a Server running
software version R300.1, the control and operation of
the system is not guaranteed.