SIST-TP CWA 16926-9:2023

SLOVENSKI STANDARD
SIST-TP CWA 16926-9:2023
01-marec-2023
Specifikacija vmesnika razširitev za finančne storitve (XFS), izdaja 3.50 - 9. del:
Vmesnik razreda naprave tekstovne terminalne enote - Referenca za programerje
Extensions for Financial Services (XFS) interface specification Release 3.50 - Part 9:
Text Terminal Unit Device Class Interface - Programmer's Reference
Ta slovenski standard je istoveten z: CWA 16926-9:2022
ICS:
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
35.240.15 Identifikacijske kartice. Čipne Identification cards. Chip
kartice. Biometrija cards. Biometrics
35.240.40 Uporabniške rešitve IT v IT applications in banking
bančništvu
SIST-TP CWA 16926-9:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CWA 16926-9:2023


CEN
CWA 16926-9

WORKSHOP
December 2022

AGREEMENT


ICS 35.200; 35.240.15; 35.240.40
English version


Extensions for Financial Services (XFS) interface
specification Release 3.50 - Part 9: Text Terminal Unit
Device Class Interface - Programmer's Reference
This CEN Workshop Agreement has been drafted and approved by a Workshop of representatives of interested parties, the
constitution of which is indicated in the foreword of this Workshop Agreement.

The formal process followed by the Workshop in the development of this Workshop Agreement has been endorsed by the
National Members of CEN but neither the National Members of CEN nor the CEN-CENELEC Management Centre can be held
accountable for the technical content of this CEN Workshop Agreement or possible conflicts with standards or legislation.

This CEN Workshop Agreement can in no way be held as being an official standard developed by CEN and its Members.

This CEN Workshop Agreement is publicly available as a reference document from the CEN Members National Standard Bodies.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and United Kingdom.



EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.


Ref. No.:CWA 16926-9:2022 E

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Table of Contents
European Foreword . 4
1. Introduction . 8
1.1 Background to Release 3.50 . 8
1.2 XFS Service-Specific Programming . 8
2. Text Terminal Units . 10
3. References . 11
4. Info Commands . 12
4.1 WFS_INF_TTU_STATUS . 12
4.2 WFS_INF_TTU_CAPABILITIES. 15
4.3 WFS_INF_TTU_FORM_LIST . 18
4.4 WFS_INF_TTU_QUERY_FORM . 19
4.5 WFS_INF_TTU_QUERY_FIELD . 20
4.6 WFS_INF_TTU_KEY_DETAIL . 22
5. Execute Commands . 24
5.1 WFS_CMD_TTU_BEEP . 24
5.2 WFS_CMD_TTU_CLEARSCREEN . 25
5.3 WFS_CMD_TTU_DISPLIGHT . 26
5.4 WFS_CMD_TTU_SET_LED . 27
5.5 WFS_CMD_TTU_SET_RESOLUTION . 28
5.6 WFS_CMD_TTU_WRITE_FORM . 29
5.7 WFS_CMD_TTU_READ_FORM . 30
5.8 WFS_CMD_TTU_WRITE . 32
5.9 WFS_CMD_TTU_READ . 34
5.10 WFS_CMD_TTU_RESET . 37
5.11 WFS_CMD_TTU_DEFINE_KEYS . 38
5.12 WFS_CMD_TTU_POWER_SAVE_CONTROL . 40
5.13 WFS_CMD_TTU_SET_LED_EX . 41
5.14 WFS_CMD_TTU_SYNCHRONIZE_COMMAND . 42
6. Events . 43
6.1 WFS_EXEE_TTU_FIELDERROR . 43
6.2 WFS_EXEE_TTU_FIELDWARNING . 44
6.3 WFS_EXEE_TTU_KEY . 45
6.4 WFS_SRVE_TTU_DEVICEPOSITION . 46
6.5 WFS_SRVE_TTU_POWER_SAVE_CHANGE . 47
7. Form and Field Definitions . 48
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7.1 Definition Syntax . 48
7.2 XFS form/media definition files in multi-vendor environments . 49
7.3 Form Definition . 50
7.4 Field Definition . 51
8. C - Header file . 53
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European Foreword
This CEN Workshop Agreement has been developed in accordance with the CEN-CENELEC Guide 29
“CEN/CENELEC Workshop Agreements – The way to rapid consensus” and with the relevant provisions of
CEN/CENELEC Internal Regulations – Part 2. It was approved by a Workshop of representatives of interested
parties on 2022-11-08, the constitution of which was supported by CEN following several public calls for
participation, the first of which was made on 1998-06-24. However, this CEN Workshop Agreement does not
necessarily include all relevant stakeholders.

The final text of this CEN Workshop Agreement was provided to CEN for publication on 2022-11-18.

The following organizations and individuals developed and approved this CEN Workshop Agreement:

• AURIGA SPA
• CIMA SPA
• DIEBOLD NIXDORF SYSTEMS GMBH
• FIS BANKING SOLUTIONS UK LTD (OTS)
• FUJITSU TECHNOLOGY SOLUTIONS
• GLORY LTD
• GRG BANKING EQUIPMENT HK CO LTD
• HITACHI CHANNEL SOLUTIONS CORP
• HYOSUNG TNS INC
• JIANGSU GUOGUANG ELECTRONIC INFORMATION TECHNOLOGY
• KAL
• KEBA HANDOVER AUTOMATION GMBH
• NCR FSG
• NEXUS SOFTWARE
• OBERTHUR CASH PROTECTION
• OKI ELECTRIC INDUSTRY SHENZHEN
• SALZBURGER BANKEN SOFTWARE
• SECURE INNOVATION
• SIGMA SPA
It is possible that some elements of this CEN/CWA may be subject to patent rights. The CEN-CENELEC policy on
patent rights is set out in CEN-CENELEC Guide 8 “Guidelines for Implementation of the Common IPR Policy on
Patents (and other statutory intellectual property rights based on inventions)”. CEN shall not be held responsible for
identifying any or all such patent rights.

The Workshop participants have made every effort to ensure the reliability and accuracy of the technical and non-
technical content of CWA 16926-9, but this does not guarantee, either explicitly or implicitly, its correctness. Users
of CWA 16926-9 should be aware that neither the Workshop participants, nor CEN can be held liable for damages
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or losses of any kind whatsoever which may arise from its application. Users of CWA 16926-9 do so on their own
responsibility and at their own risk.
The CWA is published as a multi-part document, consisting of:
Part 1: Application Programming Interface (API) - Service Provider Interface (SPI) - Programmer's Reference
Part 2: Service Classes Definition - Programmer's Reference
Part 3: Printer and Scanning Device Class Interface - Programmer's Reference
Part 4: Identification Card Device Class Interface - Programmer's Reference
Part 5: Cash Dispenser Device Class Interface - Programmer's Reference
Part 6: PIN Keypad Device Class Interface - Programmer's Reference
Part 7: Check Reader/Scanner Device Class Interface - Programmer's Reference
Part 8: Depository Device Class Interface - Programmer's Reference
Part 9: Text Terminal Unit Device Class Interface - Programmer's Reference
Part 10: Sensors and Indicators Unit Device Class Interface - Programmer's Reference
Part 11: Vendor Dependent Mode Device Class Interface - Programmer's Reference
Part 12: Camera Device Class Interface - Programmer's Reference
Part 13: Alarm Device Class Interface - Programmer's Reference
Part 14: Card Embossing Unit Device Class Interface - Programmer's Reference
Part 15: Cash-In Module Device Class Interface - Programmer's Reference
Part 16: Card Dispenser Device Class Interface - Programmer's Reference
Part 17: Barcode Reader Device Class Interface - Programmer's Reference
Part 18: Item Processing Module Device Class Interface - Programmer's Reference
Part 19: Biometrics Device Class Interface - Programmer's Reference
Parts 20 - 28: Reserved for future use.
Parts 29 through 47 constitute an optional addendum to this CWA. They define the integration between the SNMP
standard and the set of status and statistical information exported by the Service Providers.
Part 29: XFS MIB Architecture and SNMP Extensions - Programmer’s Reference
Part 30: XFS MIB Device Specific Definitions - Printer Device Class
Part 31: XFS MIB Device Specific Definitions - Identification Card Device Class
Part 32: XFS MIB Device Specific Definitions - Cash Dispenser Device Class
Part 33: XFS MIB Device Specific Definitions - PIN Keypad Device Class
Part 34: XFS MIB Device Specific Definitions - Check Reader/Scanner Device Class
Part 35: XFS MIB Device Specific Definitions - Depository Device Class
Part 36: XFS MIB Device Specific Definitions - Text Terminal Unit Device Class
Part 37: XFS MIB Device Specific Definitions - Sensors and Indicators Unit Device Class
Part 38: XFS MIB Device Specific Definitions - Camera Device Class
Part 39: XFS MIB Device Specific Definitions - Alarm Device Class
Part 40: XFS MIB Device Specific Definitions - Card Embossing Unit Class
Part 41: XFS MIB Device Specific Definitions - Cash-In Module Device Class
Part 42: Reserved for future use.
Part 43: XFS MIB Device Specific Definitions - Vendor Dependent Mode Device Class
Part 44: XFS MIB Application Management
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Part 45: XFS MIB Device Specific Definitions - Card Dispenser Device Class
Part 46: XFS MIB Device Specific Definitions - Barcode Reader Device Class
Part 47: XFS MIB Device Specific Definitions - Item Processing Module Device Class
Part 48: XFS MIB Device Specific Definitions - Biometrics Device Class
Parts 49 - 60 are reserved for future use.
Part 61: Application Programming Interface (API) - Migration from Version 3.40 (CWA 16926:2020) to Version
3.50 (this CWA) - Service Provider Interface (SPI) - Programmer's Reference
Part 62: Printer and Scanning Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version
3.50 (this CWA) - Programmer's Reference
Part 63: Identification Card Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version
3.50 (this CWA) - Programmer's Reference
Part 64: Cash Dispenser Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version 3.50
(this CWA) - Programmer's Reference
Part 65: PIN Keypad Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version 3.50
(this CWA) - Programmer's Reference
Part 66: Check Reader/Scanner Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to
Version 3.50 (this CWA) - Programmer's Reference
Part 67: Depository Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version 3.50 (this
CWA) - Programmer's Reference
Part 68: Text Terminal Unit Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version
3.50 (this CWA) - Programmer's Reference
Part 69: Sensors and Indicators Unit Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to
Version 3.50 (this CWA) - Programmer's Reference
Part 70: Vendor Dependent Mode Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to
Version 3.50 (this CWA) - Programmer's Reference
Part 71: Camera Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version 3.50 (this
CWA) - Programmer's Reference
Part 72: Alarm Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version 3.50 (this
CWA) - Programmer's Reference
Part 73: Card Embossing Unit Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version
3.50 (this CWA) - Programmer's Reference
Part 74: Cash-In Module Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version 3.50
(this CWA) - Programmer's Reference
Part 75: Card Dispenser Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version 3.50
(this CWA) - Programmer's Reference
Part 76: Barcode Reader Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to Version 3.50
(this CWA) - Programmer's Reference
Part 77: Item Processing Module Device Class Interface - Migration from Version 3.40 (CWA 16926:2020) to
Version 3.50 (this CWA) - Programmer's Reference
Part 78: Biometric Device Class Interface - Migration from Version 3.40 (CWA 16296:2020) to Version 3.50 (this
CWA) - Programmer's Reference
In addition to these Programmer's Reference specifications, the reader of this CWA is also referred to a
complementary document, called Release Notes. The Release Notes contain clarifications and explanations on the
CWA specifications, which are not requiring functional changes. The current version of the Release Notes is
available online from: https://www.cen.eu/work/Sectors/Digital_society/Pages/WSXFS.aspx.
The information in this document represents the Workshop's current views on the issues discussed as of the date of
publication. It is provided for informational purposes only and is subject to change without notice. CEN makes no
warranty, express or implied, with respect to this document.
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Revision History:
b3.10 November 29, 2007 Initial Release.
3.20 March 2, 2011 For a description of changes from version 3.10 to version
3.20 see the TTU 3.20 Migration document.
3.30 March 19, 2015 For a description of changes from version 3.20 to version
3.30 see the TTU 3.30 Migration document.
3.40 December 06, 2019 For a description of changes from version 3.30 to version
3.40 see the TTU 3.40 Migration document.
3.50 November 18, 2022 For a description of changes from version 3.40 to version
3.50 see the TTU 3.50 Migration document.

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1. Introduction
1.1 Background to Release 3.50
The CEN/XFS Workshop aims to promote a clear and unambiguous specification defining a multi-vendor software
interface to financial peripheral devices. The XFS (eXtensions for Financial Services) specifications are developed
within the CEN (European Committee for Standardization/Information Society Standardization System) Workshop
environment. CEN Workshops aim to arrive at a European consensus on an issue that can be published as a CEN
Workshop Agreement (CWA).
The CEN/XFS Workshop encourages the participation of both banks and vendors in the deliberations required to
create an industry standard. The CEN/XFS Workshop achieves its goals by focused sub-groups working
electronically and meeting quarterly.
Release 3.50 of the XFS specification is based on a C API and is delivered with the continued promise for the
protection of technical investment for existing applications. This release of the specification extends the
functionality and capabilities of the existing devices covered by the specification. Notable enhancements include:
• Addition of E2E security
• PIN Password Entry
1.2 XFS Service-Specific Programming
The service classes are defined by their service-specific commands and the associated data structures, error codes,
messages, etc. These commands are used to request functions that are specific to one or more classes of Service
Providers, but not all of them, and therefore are not included in the common API for basic or administration
functions.
When a service-specific command is common among two or more classes of Service Providers, the syntax of the
command is as similar as possible across all services, since a major objective of the XFS is to standardize function
codes and structures for the broadest variety of services. For example, using the WFSExecute function, the
commands to read data from various services are as similar as possible to each other in their syntax and data
structures.
In general, the specific command set for a service class is defined as a superset of the specific capabilities likely to
be provided by the developers of the services of that class; thus any particular device will normally support only a
subset of the defined command set.
There are three cases in which a Service Provider may receive a service-specific command that it does not support:
The requested capability is defined for the class of Service Providers by the XFS specification, the particular vendor
implementation of that service does not support it, and the unsupported capability is not considered to be
fundamental to the service. In this case, the Service Provider returns a successful completion, but does no operation.
An example would be a request from an application to turn on a control indicator on a passbook printer; the Service
Provider recognizes the command, but since the passbook printer it is managing does not include that indicator, the
Service Provider does no operation and returns a successful completion to the application.
The requested capability is defined for the class of Service Providers by the XFS specification, the particular vendor
implementation of that service does not support it, and the unsupported capability is considered to be fundamental to
the service. In this case, a WFS_ERR_UNSUPP_COMMAND error for Execute commands or
WFS_ERR_UNSUPP_CATEGORY error for Info commands is returned to the calling application. An example
would be a request from an application to a cash dispenser to retract items where the dispenser hardware does not
have that capability; the Service Provider recognizes the command but, since the cash dispenser it is managing is
unable to fulfil the request, returns this error.
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The requested capability is not defined for the class of Service Providers by the XFS specification. In this case, a
WFS_ERR_INVALID_COMMAND error for Execute commands or WFS_ERR_INVALID_CATEGORY error
for Info commands is returned to the calling application.
This design allows implementation of applications that can be used with a range of services that provide differing
subsets of the functionalities that are defined for their service class. Applications may use the WFSGetInfo and
WFSAsyncGetInfo commands to inquire about the capabilities of the service they are about to use, and modify
their behavior accordingly, or they may use functions and then deal with error returns to make decisions as to how to
use the service.
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2. Text Terminal Units
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.
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3. References
1. XFS Application Programming Interface (API)/Service Provider Interface (SPI), Programmer’s Reference
Revision 3.50
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4. Info Commands
4.1 WFS_INF_TTU_STATUS
Description This command reports the full range of information available, including the information that is
provided by the Service Provider.
Input Param None.
Output Param LPWFSTTUSTATUS lpStatus;
typedef struct _wfs_ttu_status
{
WORD  fwDevice;
WORD  wKeyboard;
WORD  wKeylock;
WORD  wLEDs[WFS_TTU_LEDS_MAX];
WORD  wDisplaySizeX;
WORD  wDisplaySizeY;
LPSTR  lpszExtra;
WORD  wDevicePosition;
USHORT  usPowerSaveRecoveryTime;
LPWFSTTULEDEX lpLEDEx;
WORD  wAntiFraudModule;
} WFSTTUSTATUS, *LPWFSTTUSTATUS;
fwDevice
Specifies the state of the text terminal unit as one of the following flags:
Value Meaning
WFS_TTU_DEVONLINE The device is online (i.e. powered on and
operable).
WFS_TTU_DEVOFFLINE The device is offline (e.g. the operator has
taken the device offline by turning a switch).
WFS_TTU_DEVPOWEROFF The device is powered off or physically not
connected.
WFS_TTU_DEVBUSY The device is busy and unable to process an
execute command at this time.
WFS_TTU_DEVNODEVICE There is no device intended to be there; e.g.
this type of self service machine does not
contain such a device or it is internally not
configured.
WFS_TTU_DEVHWERROR The device is inoperable due to a hardware
error.
WFS_TTU_DEVUSERERROR The device is inoperable because a person is
preventing proper device operation.
WFS_TTU_DEVFRAUDATTEMPT The device is present but is inoperable
because it has detected a fraud attempt.
WFS_TTU_DEVPOTENTIALFRAUD The device has detected a potential fraud
attempt and is capable of remaining in
service. In this case the application should
make the decision as to whether to take the
device offline.
wKeyboard
Specifies the state of the keyboard in the text terminal unit as one of the following flags:
Value Meaning
WFS_TTU_KBDON The keyboard is activated.
WFS_TTU_KBDOFF The keyboard is not activated.
WFS_TTU_KBDNA The keyboard is not available.
wKeylock
Specifies the state of the keyboard lock of the text terminal unit as one of the following flags:
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Value Meaning
WFS_TTU_KBDLOCKON The keyboard lock switch is activated.
WFS_TTU_KBDLOCKOFF The keyboard lock switch is not activated.
WFS_TTU_KBDLOCKNA The keyboard lock switch is not available.
wLEDs [WFS_TTU_LEDS_MAX]
Specifies the state of the LEDs. The maximum LED index is WFS_TTU_LEDS_MAX -1. The
number of available LEDs can be retrieved with the WFS_INF_TTU_CAPABILITIES info
command. This field is only provided for backwards compatibility; the lpLEDEx parameter should
instead be used to retrieve the LED status. All member elements in this array are specified as one
of the following flags:
Value Meaning
WFS_TTU_LEDNA The status is not available.
WFS_TTU_LEDOFF The LED is turned off.
WFS_TTU_LEDSLOWFLASH The LED is blinking slowly.
WFS_TTU_LEDMEDIUMFLASH The LED is blinking medium frequency.
WFS_TTU_LEDQUICKFLASH The LED is blinking quickly.
WFS_TTU_LEDCONTINUOUS The light is turned on continuous (steady).
wDisplaySizeX
Specifies the horizontal size of the display of the text terminal unit (the number of columns that
can be displayed).
wDisplaySizeY
Specifies the vertical size of the display of the text terminal unit (the number of rows that can be
displayed).
lpszExtra
Pointer to a list of vendor-specific, or any other extended, information. The information is
returned as a series of “key=value” strings so that it is easily extensible by Service Providers.
Each string is null-terminated, with the final string terminating with two null characters. An empty
list may be indicated by either a NULL pointer or a pointer to two consecutive null characters.
wDevicePosition
Specifies the device position. The device position value is independent of the fwDevice value, e.g.
when the device position is reported as WFS_TTU_DEVICENOTINPOSITION, fwDevice can
have any of the values defined above (including WFS_TTU_DEVONLINE or
WFS_TTU_DEVOFFLINE). This value is one of the following values:
Value Meaning
WFS_TTU_DEVICEINPOSITION The device is in its normal operating
position, or is fixed in place and cannot be
moved.
WFS_TTU_DEVICENOTINPOSITION The device has been removed from its
normal operating position.
WFS_TTU_DEVICEPOSUNKNOWN Due to a hardware error or other condition,
the position of the device cannot be
determined.
WFS_TTU_DEVICEPOSNOTSUPP The physical device does not have the
capability of detecting the position.
usPowerSaveRecoveryTime
Specifies the actual number of seconds required by the device to resume its normal operational
state from the current power saving mode. This value is zero if either the power saving mode has
not been activated or no power save control is supported.
lpLEDEx
Pointer to a WFSTTULEDEX structure that specifies the states of the LEDs. If there is no LED
available this will be a NULL pointer.
typedef struct _wfs_ttu_led_ex
{
USHORT  usNumOfLEDs;
LPDWORD  lpdwLEDs;
} WFSTTULEDEX, *LPWFSTTULEDEX;
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usNumOfLEDs
This value specifies the number of LEDs, i.e. the size of the array returned in lpdwLEDs.
lpdwLEDs
Pointer to a DWORD array that specifies the state of each LED. Specifies the state of the LED
as WFS_TTU_LEDNA, WFS_TTU_LEDOFF or a combination of the following flags
consisting of one type B, and optionally one type C.
Value Meaning Type
WFS_TTU_LEDNA The status is not available. A
WFS_TTU_LEDOFF The LED is turned off. A
WFS_TTU_LEDSLOWFLASH The LED is blinking B
slowly.
WFS_TTU_L
...