"Instructs the LAT to power off tem, epu, acd" (DAQ/ISIS)

ITOS Mnemonic:  LISISPOWEROFF

View Options: (help)

Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Context:

Description:

Command instructs the LAT to power off some components (where some may be one, several or all).

Layout:  (hide detail; help)

Instructs the LAT to power off tem, epu, acd (PowerOff) Telecommand Packet Format
0x	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
000	Version=0			T=1	SH	APID=0x688:18
002	SF=3		Sequence Count
004	Packet Length=112
006	0	Function Code=18
008	tem_off_cfg tem
010	epu_off_cfg epu
012	acd_off_cfg acd
014	UWRD pad
016	Packet Checksum

PowerOff (pkt)
|  tem_off_cfg tem (bf)
|  |  twr_mask pwr (0-15) ... tkr (32-47)
|  |  UWRD pad (48-63)
|  epu_off_cfg epu (bf)
|  |  epu_mask pwr (0-2)
|  |  BITS_13 pad_notused (3-15)
|  acd_off_cfg acd (bf)
|  |  on_off_select pwr (0)
|  |  free_mask free (1-12)
|  |  BITS_3 pad_notused (13-15)
|  UWRD pad (fld)

typedef struct _ISIS_PowerOff_Pkt {

    /* CCSDS header */
    char                 hdr[8];

    /* Command payload */
    ISIS_PowerOff_Prm    pay;

} ISIS_PowerOff_Pkt;

Fields:

acd_off_cfg (index)

Attribute(s):  

Brief:  "Identifies the FREE boards to power off"

Instance(s):  acd

epu_off_cfg (index)

Attribute(s):  

Brief:  "Identifies the EPUs to power off"

Instance(s):  epu

tem_off_cfg (index)

Attribute(s):  

Brief:  "Specifies the TEMs and/or towers to power off"

Instance(s):  tem

UWRD (index)

Attribute(s):  

Brief:  "Unsigned 16-bit integer"

Instance(s):  pad