Hi5 controllermaintenanceHi5 Controller Maintenance Manual5. Controller Options5. Controller Options 5.1. Public IO Board (BD580; Terminal Block)5.2. Relay Board (BD581)5.3. Public IO Board (BD582 : Connector Type)5.4. CC-link Board (BD570)5.5. Conveyor I/F Board (BD585)5.6. LDIO Board (BD58A; For LCD)5.7. Safety Relay Board (BD58B)5.8. Expansion Public IO Board (BD583 : 464-point I/O)5.9. Analog/Arc IF Board (BD584)