Running normally -
Red
During initialization or a
recoverable error occurrence
• Wait until there is an automatic
recovery from the error.
• Turn the power on again.
Initialization error
Take corrective measures according to the
error messages displayed on the V series
or the network status (see page 15).
Color Status Contents Solution
- Initialization error or network error Take corrective measures according to the
error messages displayed on the V series
Green or the module status (see page 15). Network error
Running normally -
Red
Network error Take corrective measures according to the
error messages displayed on the V series
or the module status (see page 15).
Node address duplicated or bus
Installation
Mounting Procedure
1. Turn the V series off.
2. Remove the connector cover sticker (circled in the figure below) for the communication interface
unit from the back of the V series
CAUTION Before attempting to install the CU-07 unit, turn off the power to the V series.

1. Turn the V series off. 2. Remove the connector cover sticker (circled in the figure below) for the communication interface unit from the back of the V series