SNAX/XF and SNAX/APN Configuration and Management Manual

Attributes for SNAX/XF and SNAX/APN
SNAX/XF and SNAX/APN Configuration and Management Manual—425836-006
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MAXREADCNT - for SNAX/APN Only
line. This line attribute is needed because, unlike type 2.0 PUs, the local PU object is
not defined by the user for SNAX/APN operation.
If MAXRCVSIZE is not specified, it defaults to the value given above. Unless the
SNAX/APN BTUs need to be smaller than the BTUs for the type 2.0 PUs sharing the
line, use the MAXRCVSIZE default value.
MAXREADCNT - for SNAX/APN Only
MAXREADCNT specifies the maximum read count, in bytes, to be used either with the
IBM LU represented by an acquired remote LU or with the remote LUs created by the
TLOGMGR.
The actual number of bytes that are read depends on three values:

The number of bytes the application requests in the read operation

The SCF specification for MAXREADCNT

The size of the screen, minus two lines
The smallest of the three values is the actual number of bytes that are read. For
example, if the application requests 5000 bytes, MAXREADCNT specifies 2000 bytes,
and the screen size minus 2 lines is 1760 bytes, then 1760 bytes are read.
The MAXREADCNT attribute can be specified for an acquired remote LU using the ITI
protocol—that is, an LU with the PROTOCOL attribute set to ITI. It can also be
specified for a TLOGMGR LU—that is, an LU with the PROTOCOL attribute set to
LOGON—when the remote LUs created by the TLOGMGR have an underlying
protocol of ITI. Note that the TLOGMGR always creates LUs with the ITI protocol, but
the protocol can be switched programmatically as described in the SNAX/APN
Application Programming Manual. MAXREADCNT does not apply to other types of
LUs.
Although MAXREADCNT is supported only for the ITI protocol, this attribute can be
specified when the protocol for the LU is CRT. While the CRT protocol is being used,
the MAXREADCNT value is ignored. After an application makes a programmatic
switch to the ITI protocol, the MAXREADCNT value is used. The same is true if the
protocol for an acquired remote LU is changed through SCF.
Default: 256
Value: 0 - 4096
Objects: LU