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16-9
Buffer Functions (Polling)
3. Start Record: Determines the starting point for data release. For
example, if Start Record is set at 153, the 153rd record in memory will
be the first record released. Note that if a negative value is entered,
the VIP will determine the starting point by counting backwards from
the end of the records in the current partition. For example, if the Start
Record is set at -10, the VIP will release the last ten records in the
current partition.
4. Record Count: Determines how many records are released in each
group. For example, if Record Count is set at 20, the VIP will release
20 records and then pause. Invoke command ^B02 to release the
next group.
16.3. Command Driven Data Release
Data can also be released by invoking Command ^B01. The ^B01
command line can include optional arguments which are used to release
specific types of data. These arguments are similar to the options offered
under the Set Read Session Parameters menu. The command driven
procedure consists of the following steps:
Note: Prior to reading data, the user must select output options
(Output Mode, Data on ^B01, etc.) for the port that will drive the
data release, as described in Section 5.4.
1. Release Data Partition: Use command ^B00 to release the current
partition for your port. At the command prompt type ^B00,R and
then press [Enter]. Other ^B00 command options are listed in
Section 16.3.1.
Notes:
The Release Remote Partition function (Supervisor Mode Only)
can also be used to access data that has been assigned to another
port. Please refer to command ^B76 in the Command Reference
Guide (Section 19.)
A remote partition cannot be released while another port is
reading data from that partition.
2. Begin Data Release: Invoke command ^B01 with the appropriate
arguments to release the desired data. Section 16.3.2 describes the
various arguments for command ^B01.
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