User manual

PR
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Modicon Micro Quick-Start
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GI--KWIK--ENG
Step 5. User Memory Options and Flash
Memory
Your Modicon Micro comes equipped with nonvolatile “Flash”
memory for user ladder logic storage. If you want to save register
or state RAM memory upon power loss, you’ll need one of the two
battery options described below.
Battery Options
Available battery options are a lithium battery
(Part #110XCP98000), or a 3-day battery capacitor
(Part #110XCP99000). Both can be used for Register Memory
backup.
Caution User ladder logic programs DO NOT require
battery backup, IF ladder logic programs are stored
in nonvolatile “Flash” memory in the Micro PLC.
[Refer to your Panel Software User Manual for
instructions on how to use the “Save to Flash”
command.] However, in order to save register
memory in the event of a power failure, you will need
one of the battery options. Remember, your ladder
logic program is not automatically stored in
nonvolatile “Flash” memory -- you mus t intentionally
perform this step in your programming software or
with the Hand-held Programmer.
Note If you do not have a battery or a battery capacitor
installed in the Micro, the “Battery Low” indicator LED
on the front panel will illuminate, even though your ladder
logic program maybe s tored in “Flash” memory.