Rockwell Automation 6008-SV2R VMEbus remote I/O Scanner - Manual (Page 42)

Chapter
Communicating with Remote I/O
4
4Ć5
For proper operation, terminate both ends of a remote I/O link by using
external resistors. Use either a 150
W or 82W terminator.
Table 4.A
Selecting the external resistor
the maximum number of
If your remote I/O link:
use this resistor
rating:
physical devices that
you can connect on
the link is:
racks that you can
scan on the link is:
operates at 230.4 K bit/s
operates at 57.6 or 115.2 K bit/s, and no devices
listed below are linked
Scanners 1771ĆSN; 1772ĆSD, ĆSD2;
1775ĆSR, ĆS4A, ĆS4B;
6008ĆSQH1, ĆSQH2
Adapters 1771ĆAS;
1771ĆASB (series A only);
1771ĆDCM
Miscellaneous 1771ĆAF
82W 32 16
connects to any device listed below:
Scanners 1771ĆSN; 1772ĆSD, ĆSD2;
1775ĆSR, ĆS4A, ĆS4B;
6008ĆSQH1, ĆSQH2
Adapters 1771ĆAS;
1771ĆASB (series A only);
1771ĆDCM
Miscellaneous 1771ĆAF
150W 16 16
operates at 57.6 or 115.2 K bit/s, and you do not
require over 16 physical devices
The scan list is a map of the I/O devices the scanner channel scans. To
create the scan list, use either of these commands:
If you want: use this command:
the scanner to poll all available adapter addresses and assemble a
list with one entry for each adapter
in SVĆcompatible mode, there will be a maximum of 16 entries in
the scan list; in SVĆsuperset mode , there will be a maximum of 32
entries in the scan list
AUTOCONFIGURE
to create the scan list manually
add adapters multiple times in the scan list
there can be a maximum of 64 entries in the scan list, as long as
there are only 16 distinct physical adapters
SCAN LIST
Specifying a Scan List