These technical changes are described in d2 also some

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Unformatted text preview: n at the intersection of the respective row and column. State transitions are indicated by State numbers in parentheses; thus ‘(S2)’ indicates ‘go to State Number 2’. See figure C-1. NOTE - Each of the State Tables describes the processing for one independent Virtual Channel. IF THIS "EVENT" HAPPENS WHILE FOP OR FARM IS IN THIS "STATE"... ... WAITING FOR "ACK" ... S1 STATE S2 S3 EVENT . . . ...THEN THIS "ACTION" IS PERFORMED "ACK" RECEIVED SET COUNTER TO "1" S3 . . . THIS MEANS: "AFTER PERFORMING 'SET COUNTER TO 1', GO TO STATE 3 AND WAIT FOR THE NEXT EVENT". Figure C-1: Mapping of Terms That Have Been Changed CCSDS 232.1-B-2 Page C-1 September 2010 RECOMMENDED STANDARD FOR COMMUNICATIONS OPERATION PROCEDURE-1 ANNEX D CHANGES FROM REFERENCE [B2] (INFORMATIVE) D1 GENERAL This Recommended Standard is developed from the specification in reference [B2], but a few technical details in reference [B2] have been changed based on experiences in using this procedure. These technical changes are described in D2. Also, some technical terms in reference [B2] have been changed in order to unify the terminology used in all CCSDS Recommended Standards that define space link protocols. These terminology changes are listed in D3. D2 D2.1 TECHNICAL CHANGES FARM-1 BUFFERS In 2.2.2.10 of reference [B2] it is stated that FARM-1 should have one ‘front-end’ buffer and at least one ‘back-end’ buffer. However, the FARM-1 State Table does not use the distinction between front-end and back-end buffers. Therefore the notion of front-end and back-end buffers is no longer used in this Recommended Standard. It is only assumed that FARM-1 uses some buffers for storing incoming and outgoing data and these buffers are managed by FARM-1. D2.2 FDU ABORTED INDICATION In 2.3.2 of referenc...
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This document was uploaded on 03/06/2014.

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