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ibconf—Interface Bus Configuration Utility
Default Configurations in ibconf
This section lists the default configuration values of the NI-488.2M driver.
•
Thirty-two devices with symbolic names dev1 through dev32.
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Four access boards with symbolic names gpib0, gpib1, gpib2, and
gpib3. You cannot change the access board names.
•
Access board gpib0 is enabled. gpib1, gpib2, and gpib3 are disabled.
•
The GPIB addresses of the first 16 devices are the same as the device
number. For example, dev1 is at address 1. These 16 devices are assigned
to the access board gpib0.
•
The remaining 16 devices (that is, devices 17 through 32) are assigned to the
access board gpib1. Their GPIB addresses range from 1 through 16,
respectively. For example, dev17 is at address 1.
•
Each GPIB interface board is System Controller for its independent bus and
has a GPIB address of 0.
•
The END message is sent with the last byte of each data message to a
device. No EOS character is recognized.
•
The time limit on I/O and wait function calls is set for 10 s.
•
Each GPIB board and device is set to perform I/O transfers using DMA.
•
Automatic serial polling is enabled.
•
Each GPIB board and device is set to return GPIB-specific errors while
executing API-style calls.
•
At the end of each NI-488.2 routine, the NI-488.2M driver leaves the bus in
its currently addressed state (IEEE 488.2 standard).
•
The time limit for a serial poll is set for 1 s.
NI-488.2M SRM for OS/2
7-16
© National Instruments Corp.
Chapter 7
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