89 lines
5.3 KiB
HTML
89 lines
5.3 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="DDS for 3270 remote attachment" />
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<meta name="abstract" content="The 3270 remote attachment feature allows a 3270 SNA controller or a 3274 emulating device to be attached to an iSeries server." />
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<meta name="description" content="The 3270 remote attachment feature allows a 3270 SNA controller or a 3274 emulating device to be attached to an iSeries server." />
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<meta name="DC.subject" content="3270 remote attachment" />
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<meta name="keywords" content="3270 remote attachment" />
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<meta name="DC.Relation" scheme="URI" content="kickoff.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2001, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2001, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rmtatch" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>DDS for 3270 remote attachment</title>
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</head>
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<body id="rmtatch"><a name="rmtatch"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">DDS for 3270 remote attachment</h1>
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<div><p>The 3270 remote attachment feature allows a 3270 SNA controller
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or a 3274 emulating device to be attached to an <span class="keyword">iSeries™</span> server.</p>
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<p>Some applications for the 3270 that use data description specifications
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(DDS) might require programming changes. An operator at a 3277, 3278, or 3279
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data entry keyboard can use most features and functions as a similarly configured
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and authorized 5250 workstation. The attached unit has the same capabilities
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and limitations as any remote 5251, with the following exceptions:</p>
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<ul><li>No display attributes are seen on either a 3278 or a 3279 when the field
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is defined as a nondisplay field.</li>
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<li>Numeric-only fields that are used for negative numbers
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act differently on the 3270 than on the 5250. On the 3270, if the operator
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enters a negative number in the field, the sign occupies the first position
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of the field followed by the number. This causes the maximum size of the field
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to decrease by 1 and should be considered when you design the displays and
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fields.</li>
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<li>Results that cannot be predicted can occur when data is entered in an
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input field that is involved in a page command, if any lines involved in the
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page are not of the same type field attributes and location.</li>
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<li>The following DDS keywords are ignored by 3270 support: <ul><li>AUTO (RA) and CHECK (ER)</li>
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<li>BLINK (cursor blink is controlled by keyboard for 3270)</li>
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<li>CHRID</li>
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<li>CHANGE</li>
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<li>LOWER or CHECK (LC) (lowercase is controlled by turning
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on the display for 3270)</li>
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<li>CHECK (RL and RLTB)</li>
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<li>DSPSIZ (other than 24 x 80)</li>
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<li>LOCK</li>
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<li>MSGLOC (set to row 24) <div class="note"><span class="notetitle">Note:</span> For display devices configured as a 3278
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Model 4, the MSGLOC keyword is set to display messages on row 43.</div>
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</li>
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</ul>
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</li>
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<li>The following DDS display attributes are the only ones valid for 3270
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Remote Attachment (except for 3277): <dl><dt class="dlterm">DSPATR</dt>
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<dd>RI used for 3278 and 3279 CS used for 3278 and 3279 (changed to UL) UL
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used for 3278 and 3279 BL used for 3278 (determines color on 3279)</dd>
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</dl>
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</li>
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<li>During a write operation to the error line, the Enter key is defined as
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a Reset key and cannot be mapped to any other function. <p>In addition, if
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a write operation is requested by the user application to display an error
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message, a read operation should immediately follow the write operation for
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the remote 3270 display to allow resetting of the error message. A read operation
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following a write operation of an error message should be used by call applications
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regardless of the type of target display. If a read operation does not immediately
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follow the write error message requested by the user application, remote 3270
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displays might overlay the error message before it can be read by the user.</p>
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</li>
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</ul>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="kickoff.htm" title="Use data description specifications (DDS) to define display files. This topic collection provides the information you need to code the positional and keyword entries that define these files.">DDS for display files</a></div>
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</div>
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</div>
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</body>
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</html>
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