Bus Configuration Editor; Mxi Bus; Mxi System Controller; Mxi Bus Timeout - National Instruments MXI VXI-PCI8026 Getting Started

Bus Configuration Editor

Note Make sure the MXI-2 cable is connected to the PCI-MXI-2 when you power on or
reboot the computer. This is required for the PCI-MXI-2 to automatically detect whether it
will be the MXIbus System Controller.
© National Instruments Corporation
This section describes the options you can select for each of the fields in the
Bus Configuration Editor.

MXI Bus

The following paragraphs describe the options for the MXI Bus portion of
this editor.

MXI System Controller

You can use the MXI System Controller option to determine whether the
PCI-MXI-2 acts as the MXIbus System Controller. The three options are
Auto, Yes, and No.
When the Auto setting is active (the default setting), the PCI-MXI-2
automatically can sense from the MXIbus cable whether it should be
the controller. This setting requires that the cable is attached properly
before making any NI-VXI function calls or attempting to use the
VXI/VME-MXI-2 Configuration Editor. Refer to Connect the MXIbus
Cable at the end of either Chapter 3,
and Installation, or Chapter 4,
and Installation, of this manual.
You can select the Yes or No options to manually determine whether the
PCI-MXI-2 should be the MXIbus System Controller. You must still be
certain to cable the MXIbus system appropriately when you make either of
these selections.

MXI Bus Timeout

The MXIbus Bus Timeout (BTO) is a watchdog timer for transfers on the
MXIbus. The MXIbus BTO operates only when the PCI-MXI-2 is acting
as the MXIbus System Controller.
After the specified amount of time has elapsed, the BTO circuitry
terminates a MXIbus cycle if no slave has responded. The BTO is also
disabled when the current MXIbus cycle maps to the VXI/VMEbus through
a VXI/VME-MXI-2.
Chapter 6
VXI-MXI-2 Configuration
VME-MXI-2 Configuration
6-7
NI-VXI Configuration Utility
VXI/VME-PCI8026 for Linux