Configuration and Startup Procedures
Chapter 2
GPIB-VXI User Manual
2-18
© National Instruments Corporation
Non-Slot 0 Message-Based Device Configuration
You can configure the GPIB-VXI for Non-Slot 0 Message-Based device operation by disabling
the VXIbus Slot 0 functions, setting the model code to 8FFh, and setting the logical address to a
non-zero value, as shown in Table 2-10.
Table 2-10. Non-Slot 0 Message-Based Device Operation Switch and Jumper Settings
Jumper/Switch
Position
Function
CLK10 jumpers
See Figure 2-10.
CLK10 receiving from backplane is
enabled.
If S24 is OFF, the GPIB-VXI will source
CLK10 at the front panel BNC.
Switch S1
OFF
SYSCLK sourcing is disabled.
Switch S2
OFF
MODID pull-down resistor is disabled.
Switch S5
OFF
Bus arbiter is disabled.
Switch S10
OFF
Model code is 8FFh.
Logical Address
At least one is
Logical address is not equal to 0.
Switches 8 through 1
OFF
CLK10 receiving from backplane is enabled
• •
• •
• •
• •
• •
• •
Figure 2-10. CLK10 Jumper Settings for Non-Slot 0 Message-Based Device Operation
Non-Slot 0 Message-Based Device Operation
Setting the logical address to FFh causes the GPIB-VXI to participate in dynamic configuration.
At startup, a GPIB-VXI configured as a Non-Slot 0 Message-Based device performs its self-
tests, then waits until it receives its
Device Grant
and
Begin Normal Operation
Word Serial
commands. When it responds to the
Begin Normal Operation
command, the GPIB-VXI enters
its normal mode of operation.
