ABB 64606956 RDCO-02C DDCS communication option/spare-parts kit for the recorded ACS800 drive application. The source also records manufacturer reference RDCO-02C-KIT.Identifier check: a legacy tag uses RDC0-02C with a zero, while the title and description use RDCO-02C with the letter O. Both are retained without silently correcting the code.Recorded product detailsDDCS COMMUN. OPTI RDCO-02C OPTION/SP KIT ABB DDCS COMMUNICATION OPTION BOARD 2 for ACS800 64606956 / RDCO-02C Manufacturer Part Number RDCO-02C-KIT Description The RDCO-02 module includes the connectors for fiber optic DDCS channels CH0, CH1, CH2 and CH3. The usage of these channels is determined by the application but are normally assigned to the following: CH0 – overriding system e.g. fieldbus adapter - Accessory Type Communication Module System and kit checksThe source describes fibre-optic DDCS channels CH0, CH1, CH2 and CH3. Channel use depends on the drive/application configuration; the CH0 example is not a fixed assignment for every system. Reference 1143101009 is retained from the original tags without assigning it an unverified function.Confirm the exact board marking, drive compatibility and kit contents. This is an option module, not a complete ACS800 drive, Ethernet adapter or supplied fibre-optic cabling set.