Rockwell Automation 6008-SV2R VMEbus remote I/O Scanner - Manual (Page 104)

Chapter
Operating in SVĆSuperset Mode
6
6Ć23
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)
0202
0204
0206
-021B
021E
Name
021C
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 6.3 and Figure 6.4
READ ONLY
Bit 7 = semaphore
not used
not used
0220
channel A
control/status
adapter status words
64 words
1 byte per adapter in the
scan list
see Figure 6.5
READ ONLY
-029F
02A0
-02DF
scan list
as many as 64 bytes
not used
channel A
general data
number of entries in the scan list
READ ONLY
-02FF
02E0
not used
scan list
length
semaphore
command
confirmation
0203
0205
not used
not used
021D
021F
LINK STATUS
command byte 21
description