Rockwell Automation 6008-SV2R VMEbus remote I/O Scanner - Manual (Page 75)

Chapter
Operating in SVĆCompatible Mode
5
5Ć24
Figure 5.12
Format for one entry in the scan list
6 5 4 3 2 1 0 7
Format item: Description:
rack number
bits 4-2
The value (0-7 binary) identifies the rack number.
starting I/O group number
bits 1-0
One of the following values identifies the starting I/O group:
00
group 0
01 group 2
10 group 4
11 group 6
Your code for the LINK STATUS command should include these tasks:
1. get the semaphore
2. set up the control status area
3. send the command interrupt
4. wait for the result
(either poll for confirmation status or wait for an interrupt)
5. check the result
6. clear the semaphore
coding sequence