6SE6400-4BD12-0BA0 Siemens

August 1993:

• Specification for SIMOVERT Master Drives.

• The restriction regarding a fixed telegram length for task telegrams from the master to the slave has been

withdrawn. When a variable telegram length has been parameterized, this is possible in both data transfer

directions (Master → Slave → Master).

• Expansion in the index word (IND) in the high byte for text transfer for SIMOVERT FC/VC/SC

• The text character sequence has been changed for data transfer via the bus.

September 1994:

• Section C has been updated: Point 3: Parameterization

• New in Section C: Point 6: Useful data transfer format

• Supplement, Section B: Physical interface and bus structure

• The master can now be located at any position on the bus.

• Recommendation for display parameters for BUS- and interface diagnostics.

• Assignment of the most significant bit in the address byte for special telegrams

• Broadcast definition, Section C

• Bits 11-15 in the index have been defined, converter-specific

• Section B: Designations (A) and (B) have been replaced by RS485P and RS485N

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