IEC 61850-9-2 FDIS of Edition 2 open for Ballot

The IEC 61850-9-2 Edition: Communication networks and systems for power utility automation – Part 9-2: Specific communication service mapping (SCSM) – Sampled values over ISO/IEC 8802-3

is open for FDIS ballot until 2011-07-29.

Changes comprise:

• Addition of an optional Link redundancy layer
  Link Redundancy:
  Parallel redundancy protocol and high availability seamless ring
  IEC 62439-3, Amendment 1
• Redefinition of “reserved” fields in link layer
• USVCB and MSVCB components
• Encoding for the transmission of the sampled value buffer