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SETTING
CONFIGURATION
SWITCHES
Local Bus Daisy Chain DIP Switches
Close All 12 Switches Only if Another Carrier or
1260-Series Module is in the VXI Chassis Slot
Immediately to the Right
Local Bus Daisy-
Chain Switches
Logical Address
Switch (only if
Option-01T
installed)
Getting Started 2-6
1260-100/101 Adapt-a-Switch Carrier Module User Manual
Model 1260-100 has its configuration switches located on the right
side panel (see Figure 2-2).
Model 1260-101 has no module address DIP switch and the local
bus daisy chain DIP switches are on the left side panel.
Figure 2-2, Configuration Switches
Set these switches as follows.
If you are using a 1260-100/101 Carrier by itself, with no switch
modules or carriers to its right, set all twelve local bus daisy-chain
switches to the OPEN position. On the other hand, if you install a
1260-Series switch module or another 1260-100 Carrier to the
immediate right, set all twelve local bus daisy-chain switches to the
CLOSE position.
This allows the Option-01T in the 1260-100
Carrier to control not only the plug-ins in that carrier, but the switch
modules installed to the right, as well.
If an Option-01T is installed in the 1260-100/101 Carrier, an eight-
segment DIP switch is visible through the opening labeled "Logical
Address", as shown in Figure 1-4. This DIP switch sets the binary
address by which the Option-01T will access the plug-ins in the
carrier. Each segment represents a numeric value, as labeled, so
that the combination of eight segments forms a binary number
from 0 to 255
.
10
Every module in a VXIbus chassis that is directly controlled by the
slot 0 controller must have a unique module address. The plug-ins
in the 1260-100/101 Carrier, and the 1260-Series switch modules,
are controlled by the Option-01T controller. Therefore, they do not
need, or provide, logical addresses. Instead, the slot 0 controller
communicates directly with the Option-01T only.
single logical address covers all switch products that the
Logical Address DIP Switch
Set Logical Address to Unique Number
from 1 to 256, inclusive. Set to 255 for
Auto-Configuration.
Racal Instruments 1998
Module Address
DIP Switch
(1260-100 ONLY)
Set Module
Address Range for
PLUG-INS
Therefore, a
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