CWA 16926-68:2020现行
Extensions for Financial Services (XFS) interface specification Release 3.40 - Part 68: Text Terminal Unit (TTU) Device Class Interface - Migration from Version 3.30 (CWA 16926) to Version 3.40 (this CWA) - Programmer's Reference
出版：Comite Europeen de Normalisation
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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 control All 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.
