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ibconf—Interface Bus Configuration Utility
Send EOI at End of Write
Some devices, as Listeners, require that the Talker terminate a data message by
asserting the EOI line with the last byte. A yes response causes the GPIB board
to assert the EOI line on the last data byte. The default option for this
characteristic is yes.
GPIB-Specific Errors
Boards and devices have a switch that specifies whether the NI-488.2M driver
returns OS/2 device errors or GPIB device errors when API IOCtl functions are
used. A no response causes the OS/2 API functions (except the status query
function) to return OS/2 device errors. If this option is set to yes, GPIB-specific
errors are returned on all API IOCtl functions. The default option for this
characteristic is yes.
System Controller (Board Characteristic Only)
This field appears on the board characteristics screen only. The System
Controller in a GPIB system is the device that maintains ultimate control over
the bus. In some situations, such as a network of computers linked by the GPIB,
another device may be System Controller and the GPIB board should be
designated as not System Controller. A no response would designate not
System Controller and a yes response would designate System Controller
capability. The GPIB board is usually designated as System Controller. The
default option for this characteristic is yes.
Note:
You should not have more than one designated System Controller in
any GPIB system.
Assert REN when SC (Board Characteristic Only)
A yes response to this field causes Remote Enable (REN) to be asserted
automatically whenever the board is placed online, if that the board has System
Controller capability. If you give a no response, an explicit call to ibsre is
required to assert REN. The default option for this characteristic is no.
NI-488.2M SRM for OS/2
7-12
© National Instruments Corp.
Chapter 7
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