National Instruments 370551A-01 Benutzerhandbuch

Logical address 0 is reserved for the Resource Manager in the VXIbus 
system. Because the VXI-MXI-2 cannot act as a Resource Manager, do not 
configure the VXI-MXI-2 with a logical address of 0.

Some VXIbus devices have dynamically configurable logical addresses. 
These devices have an initial logical address of hex FF or 255, which 
indicates that they can be dynamically configured. While the VXI-MXI-2 
does support dynamic configuration of VXI devices within its mainframe, 
it is itself a statically configured device and is preset at the factory with a 
VXI logical address of 1.

Ensure that no other statically configurable VXIbus devices have a logical 
address of 1. If they do, change the logical address setting of either the 
VXI-MXI-2 or the other device so that every device in the system has a 
unique associated logical address.

You can change the logical address of the VXI-MXI-2 by changing the 
setting of the 8-bit DIP switch labeled LOGICAL ADDRESS SWITCH 
(location designator U43) on the panel. The down position of the DIP 
switch corresponds to a logic value of 0 and the up position corresponds 
to a logic value of 1. Verify that the VXI-MXI-2 does not have the same 
logical address as any other statically configured VXIbus device in your 
system. Remember that logical addresses hex 0 and FF are not allowed for 
the VXI-MXI-2. Also, when setting logical addresses, keep in mind the 
grouping requirements set by the system hierarchy. Refer to VXI-6, VXIbus 
Mainframe Extender Specification, for more information about setting 
logical addresses on a multimainframe hierarchy.