Rockwell Automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User Manual - Manual (Page 21)

Chapter 2
Installing the Control Coprocessor
2-3
The 1770-XYC battery ships with the control coprocessor and requires
special handling. See Allen-Bradley Guidelines for Lithium Battery
Handling and Disposal, publication AG-5.4.
A red BATT status LED on the main module indicates that the battery
needs replacement. Replace the battery while the module is powered so
that your programs are maintained in memory. You may lose your
programs if you remove the battery when power is removed.
ATTENTION: To maintain CSA certification for hazardous
areas, do not substitute any other battery for the 1770-XYC.
Installing the ControlĆCoprocessor Battery
You can install the battery either before or after you install the control
coprocessor in the I/O chassis. To install the battery in the main module:
2. Remove the battery cover. 1. Remove the battery
from the shipping bag.
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3. Remove any existing battery by pressing the lever on the battery-side connector and
sliding the connectors apart.
4. Connect the battery.
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Install the ControlĆ
Coprocessor Battery