Names and Functions of Parts
Section
2-1
62
System Common block will be ON. (Battery errors (error code 0330) will not
be stored in the error log.)
When replacing the battery, replace with the following battery type. For
details on how to replace the battery, see 7-2 Maintenance.
Product name
Model
Battery set
C200H-BAT09
Note
Operation without a battery is also possibly by setting the Loop Control Unit
to automatically transfer the contents of flash memory to RAM at startup.
Refer to 7-2 Maintenance for details.
DIP Switch
When the battery compartment cover is opened, you can access the DIP
switch shown below.
Battery
2
1
ON
DIP switch
Pin 2 of the DIP switch is used to specify whether or not flash memory
contents will be automatically transferred to RAM at startup. Any changes to
the setting of the DIP switch are effective when PC power is turned ON or the
Loop Control Unit is reset. Changes made during operation will be ignored.
Note
Always turn OFF the power supply to the Loop Control Unit before changing
the settings on the DIP switch.
Appearance
Pin
Setting
Meaning
Application
ON
1
OFF
(default)
Do not turn ON.
ON
(See note 1.)
Contents of flash
memory transferred to
RAM at startup.
Turn ON to operate without a
battery.
Turn ON to recover RAM contents
from flash memory for a battery
error when functiion block data has
been backed up to flash memory
and a battery error has occurred.
2
OFF
(default)
Contents of flash
memory not transferred
to RAM at startup.
Used to operate with RAM backed
up by the battery.
Note 1
The Loop Control Unit will operate as follows when pin 2 of the DIP switch
has been turned ON to automatically transfer flash memory contents to RAM
at startup:
When the power to the PC is turned ON or the Loop Control Unit is restarted,
the function block data will be transferred from flash memory to RAM before
operation is started. Operation, however, must be started using a cold start.
Operation will not start for a hot start.
If operation is then stopped from the CX-Process Tool, either a hot or cold
start can be used as normal.
When pin 2 is ON, the ERC indicator on the front panel will not flash and bit
05 of word n will not turn ON even if the battery voltage drops or a battery is
not mounted.
2
1
ON