DIN Standards Committee Finance
Extensions for Financial Services (XFS) interface specification Release 3.20 - Part 9: Text Terminal Unit Device Class Interface Programmer's Reference
Abstract
This specification describes the functionality of the services provided by text terminal unit (TTU) services under XFS, by defining the service-specific commands that can be issued, using the WFSGetInfo, WFSAsyncGetInfo, WFSExecute and WFSAsyncExecute functions.This section describes the functions provided by a generic Text Terminal Unit (TTU) service. A Text Terminal Unit is a text i/o device, which applies both to ATM operator panels and to displays incorporated in devices such as PIN pads and printers. This service allows for the following categories of functions:- Forms oriented input and output- Direct display output- Keyboard input- LED settings and controlAll position indexes are zero based, where column zero, row zero is the top-leftmost position.If the device has no shift key, the WFS CMD TTU READ FORM and WFS CMD TTU READ commands will return only upper case letters. If the device has a shift key, these commands return upper and lower case letters as governed by the user's use of the shift key.
Begin
2011-10-19
WI
WSXFS179
Planned document number
DIN CWA 16374-9
Project number
62000101
