Whether the CI854AK01 is now available or not.
What new CI854BK01 differ from CI854AK01. Kindly do the needful.
3BSE091179 A Control Software for AC800M 6.0.0-2 Release Notes
The CI854B is a new PROFIBUS-DP master that replaces CI854A in new installations. CI854B has the same functionality as CI854A and requires the AC 800M controller firmware to be of version 6.0.0-2 or later. User documentation for System version 6.0.0 includes CI854B. However, support for CI854B is added in System version 188.8.131.52.
CI854B module redundancy. CI854 module redundancy is supported for modules with the same module type. That is, if both the modules in the pair are CI854A or both are CI854B. Redundancy works in a temporary combination of CI854A and CI854B. This configuration is recommended only during CI854A to CI854B migration just to have seamless migration without disturbing the communication. A permanent mixed operation of CI854A and CI854B as a redundant pair is not supported.
CI854B Line redundancy.
Line redundancy functionality is a bit different for CI854B compared to CI854A. In CI854A it was only monitoring of line redundancy
that was enabled or disabled via the parameter "Line Redundancy". In CI854B, if the "Line Redundancy" parameter is disabled the Line B is disabled on the CI854B module. The PROFIBUS cable must then be connected to the Line A connector. For more information about the functionality of the new CI854B read the manual 3BDS009030-600 C, AC 800M 6.0 PROFIBUS DP Configuration
The CI854B has an increased differential output voltage compared to theCI854A. The CI854B differential output voltage is around 7 V which is in accordance with the PROFIBUS specification (RS-485 standard ANSI TIA/EIA-485-A) to be compared with about 5.4V for CI854A.