Rockwell Automation 6008-SV2R VMEbus remote I/O Scanner - Manual (Page 72)

Chapter
Operating in SVĆCompatible Mode
5
5Ć21
LINK STATUS determines the current status of the adapters on the
selected channel’s I/O link. LINK STATUS doesn’t affect the scanner.
The VME master processor can issue LINK STATUS any time.
Byte offset
(Hex)
102
104
106
-11B
11E
Name
11C
00H returned means the command was
successful. Any other value indicates
an error.
21H is both sent and returned.
16 bits per starting group
(4 words per adapter)
see Figure 5.3 and Figure 5.4
READ ONLY
Bit 7 = semaphore
not used
not used
120
channel A
control/status
adapter status words
32 words
1 byte per adapter in the
scan list
see Figure 5.5
READ ONLY
-15F
160
-17F
scan list
as many as 64 bytes
not used
channel A
general data
number of entries in the scan list
READ ONLY
-FBF
180
not used
semaphore
command
confirmation
not used
not used
103
105
11D
scan list
length
11F
LINK STATUS
command byte 21
description