"CCSDS telecommand header (bytes 6-7)" (SVC/ITC)

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Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Ancestry:

0x000	pkt	CmdConfirm
0x028	str	CmdHeader cmd_hdr
0x02E	bf	Hdr3 hdr3

Definition:

Alignment:	2-byte boundary
APID:	720/0x2D0
Attribute(s):
C type:	unsigned short
Length:	16 bits (2 bytes)
Offset:	0x02E

Description:

Bitfields for bytes 6-7 of a standard CCSDS telecommand header, where a two-byte secondary header containing a function code has been defined.

Layout: (show detail; help)

Start	Stop	Size		Item Type and Name
0	0	1		Fnc_pad fnc_pad
1	15	15		Fnc_code fnc

Fields:

Fnc_code (index)

Attribute(s):  

Brief:  "CCSDS telecommand function code"

Instance(s):  fnc

CCSDS telecommand function code

Fnc_pad (index)

Attribute(s):  

Brief:  "Padding"

Instance(s):  fnc_pad

Function codes are not allowed to touch the most significnat bit of the 16-bit function code. This padding places the bit off limits.