Rcdia - Receive Diagnostic Results - National Instruments GPIB-SCSI-A User Manual
Scsi-to-ieee 488 controller
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Also See for GPIB-SCSI-A:
- Installation manual (17 pages) ,
- Getting started (35 pages) ,
- Getting started (40 pages)
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Chapter 7
rcdia - Receive Diagnostic Results
Type:
SCSI function
Syntax:
rcdia allocation length<CR>
Purpose:
Use rcdia to command the GPIB-SCSI-A to process the
Group 0 SCSI RECEIVE DIAGNOSTIC RESULTS
command.
Remarks:
The GPIB-SCSI-A uses the following Command Descriptor
Block to command the Target to process rcdia. Notice how
the parameter to the rcdia command is used in the creation
of the Command Descriptor Block.
Byte
The Allocation Length in the Command Descriptor block
above is given as a parameter to the rcdia command. The
LUN corresponds to the last value assigned with the lun
command. The VCB corresponds to the last value assigned
with the vcb command.
The Allocation Length is the number of bytes that the initiator
has allocated for returned rcdia data. An Allocation Length
of 0 indicates that no data shall be transferred. This condition
is not considered an error.
© National Instruments Corp.
Bit
7
6
0
1
LUN
2
3
Allocation Length (Most Significant Byte)
4
Allocation Length (Least Significant Byte)
5
VCB
5
4
1C
00
7-49
GPIB-SCSI-A User Manual
G Mode Functions
3
2
1
00
00
0
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