User's Manual

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If multiple ROUs connected to BIU share the same ID, the screen will fail to read status
information on the ROUs with the same IDs. Therefore, make sure not to redundantly set ROU
ID.
Checking Communication LED of
RCPU
Check if TXD and RXD LEDs in RCPU make communication. Receiving FSK signals from BIU,
ROU sends requessted status value to BIU. During reception, RXD LED flicks. During
tramsmission, on the other hand, TXD LED flicks. At this time, you need to check if whether to
use a corresponding ROU is checked on (See "whether to use BIU OEU/ROU").