Techno Trade U2L Quick start guide

U2L converter
IFSF protocol with LON interface to Tokheim UDC protocol
with RS-485/RS-232 interface and backwards
TECHNICAL GUIDE
Review date: 1 October, 2021

U2L CONVERTER TECHNICAL GUIDE
Revision: R01 Review date: 1 October, 2021
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CONTENT
PURPOSE OF THE DOCUMENT ..............................................................................................................................3
TECHNICAL FEATURES...........................................................................................................................................4
Appointment ................................................................................................................................................. 4
Technical characteristics................................................................................................................................ 5
Communication ............................................................................................................................................. 5
CONNECTIONS.......................................................................................................................................................6
Connectors overview..................................................................................................................................... 6
USER INTERFACE .................................................................................................................................................10
S1 and S2 buttons........................................................................................................................................ 10
Indication LEDs ............................................................................................................................................ 10
Control keys................................................................................................................................................. 11
CONFIGURATION.................................................................................................................................................12
Menu description ........................................................................................................................................ 12

U2L CONVERTER TECHNICAL GUIDE
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PURPOSE OF THE DOCUMENT
This Technical Guide is intended for studying of U2L converter. It contains basic information regarding its
appointment, technical characteristics, software features, set-up parameters and operation modes.
Information regarding connection to specific fuel dispensers and correspondent configuration of U2L
controller can be received upon request to Technotrade LLC company.
During the system development process given Technical Guide is also expanded and updated and new
chapters are added. Latest version of this Technical Guide can be downloaded from the U2L converter web-
page: https://www.technotrade.ua/ifsf-lon-converter.html.
Technotrade LLC hereby permits reproduction of this document as may be required by any of the
customers or OEMs wishing to use it.
This document has been carefully prepared and is believed to be accurate. However, Technotrade LLC, its
employees and its agents do not assume responsibility for its use either directly or indirectly. Technotrade
LLC shall not be liable for technical or editorial errors or omissions which may appear in this document.
Technotrade LLC reserves a right to make changes to this document at any time without notice. Prospective
users of this document should contact Technotrade LLC at the time they wish to use U2L converter
together with their products to become aware of any updates that may apply.
In case if you find any mistakes, omissions in this document or have any suggestions on improvements to
this document, please feel free to e-mail them to our support mailbox: [email protected]a. We will
be grateful to you for this valuable information.
All technical questions regarding the U2L converter are welcome to be asked on support mailbox:
[e-mail]. Our support team will be glad to help you.
Also, you can call to us or visit us on:
Technotrade LLC
Ukraine, 04114 Kiev, Priorska str. 10, office 1
Tel: [phone]
Web: www.technotrade.ua
Mail: [e-mail]

U2L CONVERTER TECHNICAL GUIDE
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TECHNICAL FEATURES
Appointment
U2L converter converts from IFSF protocol with LON interface to Tokheim UDC protocol with RS-485/RS-
232 interface and backwards. It allows POS systems and forecourt controllers, which are not compliant with
IFSF protocol and LON interface, to communicate through RS-232 or RS-485 interfaces with fuel dispensers
having LON interface and IFSF protocol.
U2L interface converter can be applied for communication with all dispensers able to connect to the IFSF-
LON network including Tokheim, Neotec, DEM G. Spyrides, others.
U2L converter is an embedded device that successfully transforms IFSF-LON communication from fuel
dispensers into Tokheim UDC protocol. It is designed to connect any type of IFSF-LON compatible
dispensers to a non-IFSF forecourt control devices or POS.

U2L CONVERTER TECHNICAL GUIDE
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Technical characteristics
##
PARAMETER
VALUE
1
Power supply voltage
100 V –270 V AC
2
Sealing
IP20
3
Material
ABS Plastic
4
Temperature range
from 0°C to +40°C
5
Supported dispenser brands
All brands with IFSF-LON certification passed
6
Weight
0.45 kg
7
Overall dimensions
160 x 95 x 55 mm
Communication
##
PARAMETER
VALUE
1
Input protocol for RS-485 and RS-232
ports for connection to POS
Tokheim UDC
2
Output protocol for dispensers
IFSF
3
Interface for dispensers’ connection
LON

U2L CONVERTER TECHNICAL GUIDE
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CONNECTIONS
Connectors overview
CONNECTOR
DESCRIPTION
X15
Main power connector
F1
Protection fuse, type T1AL250V
X4
RS-232 interface
X7
Debug/Auxiliary RS-232 interface
S1 and S2
Buttons used for cold-start and reset
X6
Micro USB-B device (not used in the current firmware release)
X5
USB 2.0 connector –for firmware update and loggings
X9
LON interface connector
X8
RS422/RS485 connector

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Connector X15
X15 is the connector where the main power is connected to U2L.
CONNECTOR
DESCRIPTION
E
Earth
N
Neutral
L
Line
CAUTION! High voltage is supplied to the device. A potential of shock hazard exists. Always connect and
disconnect the power terminals only when the main power supply is turned off!
Connector X4
X4 is the connector for RS-232 interface of the control system using UDC protocol.
Connector X5
X5 is USB host connector (standard USB 2.0 type-A jack), it is currently used for firmware update as well as
capturing of debug information on log-files.
Connector X6
USB device. Micro USB-B connector. Will be used in future software releases.
Connector X7
Another RS-232 interface connector used for debug purposes. Do not connect.

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Connector X8
X4 is the connector for RS-485/RS-422 interfaces of the control system using UDC protocol.
CONNECTOR
DESCRIPTION
Rx+
Serves as line A in RS-485 interface. Also, is used for RS-422 interface.
Rx-
Serves as line A in RS-485 interface. Also, is used for RS-422 interface.
COM
Common for connection to cable shield or foil
Tx+
Used for RS-422 interface only
Tx-
Used for RS-422 interface only
Example of connection to PTS-1 controller:

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Example of connection to PTS-2 controller:
Connector X9
LON interface connector for connection to LON network of pumps. As the LON interface is two-wire
differential there is no polarity of the terminals.

U2L CONVERTER TECHNICAL GUIDE
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USER INTERFACE
S1 and S2 buttons
Buttons S1 and S2 are used to set the U2L converter in preliminary defined state according to IFSF-LON
specification. By pressing and keeping both of these buttons pressed in power-off state at powering on the
device all of the configuration parameters are reset to their default values.
Indication LEDs
LED NAME
FUNCTION
ON CONDITION
OFF CONDITION
COLOR
POWER
Indicates when the
main power is applied
Main power
presence
Main power
is off
Orange
Activity
Indicates proper
activity
Blinking with 1
second interval
Green
Status
Indicates system error
Green color for OK
Red color for error
TX
Indicates transmitting
over RS-485 interface
Green
RX
Indicates reception
over RS-485 interface
Red

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Control keys
NAME
FUNCTION
OK / MENU
When U2L converter is in the main screen pressing on this key leads to
entering the menu. When modifying a parameter from the settings
pressing this key confirms the changes.
UP
Navigates through menus or parameters up increasing the value of the
parameter with 1
DOWN
Navigates through menus or parameters down decreasing the value of
the parameter with 1
LEFT
Goes back from sub-menu. Confirms a parameter change.
RIGHT
Go to a sub-menu. Select a parameter to be modified.

U2L CONVERTER TECHNICAL GUIDE
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CONFIGURATION
Menu description
Main screen
Fields description:
- POS system status (Online/ Offline): provides indication whether the POS is connected to the converter
and active in polling with requests.
- POS polling indicator: indicates when POS requests were received by the converter.
- Number of FPs enabled: sequential number of the enabled fueling points (FPs).
- FP Status: real-time status of each FP.
- HB indicator per FP: this shows the heartbeat received over IFSF-LON for each FP.
- LON-server node address and status: shows the node address and the current status (online/offline) of
the internal LON server.
Main menu
Pressing the OK/MENU key on the front panel causes the device to show the first level of the main-menu
options:
##
SUB-MENU
DESCRIPTION
1
SETTINGS
Includes all device settings in set of sub-menus
2
DEVICE INFO
Current software revision of U2L converter

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SETTINGS
SETTINGS menu is accessed by pressing the OK/MENU key while in main-menu level and the cursor is on
“SETTINGS” row (you see it inversed).
This menu contains the following sub-menus:
##
SUB-MENU
DESCRIPTION
1
DEVICE
Set device parameters
2
POS
Set POS-side parameters
3
LON
Set LON-network parameters
4
IFSF
Set IFSF-protocol parameters
5
PUMP
Set PUMP specific parameters
SETTINGS > DEVICE
This menu contains the following sub-menus:
##
SUB-MENU
DESCRIPTION
REMARK
1
COMMON
Set device common features.
2
DEBUG LEVEL
Set POS and LON communication debug
levels.
These parameters only affects the
service logging. No impact on the
normal communication flow.
3
RESET
Performs software reset of U2L Bridge.
4
COLD START
Cold start will bring the device to factory
default setting

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SETTINGS > DEVICE > COMMON
This menu allows adjustment of the following device-parameters:
##
PARAMETER
DESCRIPTION
OPTIONS
DEFAULT VALUE
1
LANGUAGE
Set the default menu language
for the device
ENG –English
SWH –Not supported
ENG
2
LCD
CONTRAST
Set LCD contrast.
1-9
8
3
SCR FADE EN
Enable fading the LCD contrast
after the set time expired and
no activity is detected.
YES / NO
YES
4
SCR FADE
TIME
Set the time in seconds after
which the LCD starts fading.
1 - 250
30
SCR
BLACKOUT
EN
Enable turning-off the LCD
after the set time expired and
no activity is detected. It is
strictly recommended to keep
this option enabled. The LCD
screen may be damaged
(burned-in) if it stays always
on with a static image on it.
YES / NO
YES
SCR BLACKOUT TIME
Set the time in seconds after
which the LCD turns OFF.
1 - 250
30
SCR SAVER EN
Enables/Disables the screen
saver.
YES / NO
YES
SCR SAVER TIME
Time in sec to activate the
screen saver.
1 - 250
10
SCR SAVER CONTRAST
Set the contrast of the
screensaver.
1 - 9
1

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SETTINGS > DEVICE > DEBUG LEVEL
Adjust device debug levels. These parameters are used only for service purposes during logging and do not
affect the normal communication of U2L with the other devices. Below the parameters included in the
menu:
##
SUB-MENU
DESCRIPTION
REMARK
1
POS DEBUG LEVEL
Set POS debug level.
0-2
2
LON DEBUG LEVEL
Set LON debug level.
0-2
SETTINGS > DEVICE > RESET
Device reset. For activating the reset press OK and then by UP/Down keys select ‘YES’ and then push OK
button. The reset is executed when quitting this menu.

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SETTINGS > DEVICE > COLD START
Perform a cold start on the device. A cold start will bring the device to factory default configuration. A 4
digits password is needed to enter to that option.
After entering the password the screen and actions are similar to RESET menu. The Cold Start is executed
when quitting this menu:
SETTINGS > POS
Adjust communication parameters with the POS system.
The following parameters in sub-menus are included:
##
SUB-MENU
DESCRIPTION
REMARK
1
COMM
Sets the communication parameters
2
DECIMAL

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SETTINGS > POS > COMM
##
PARAMETER
DESCRIPTION
OPTIONS
DEFAULT VALUE
1
PROT
Defines the POS protocol options.
UDC
UDC
2
INTERFACE
Defines the possible communication
interfaces.
RS-485, RS-422, RS-232
RS-485
SETTINGS > POS > DECIMALS
When entering this menu on the U2L device a 4 digits password is needed to enter to that option.
The default password is: 2345
When properly entering the following screen is opened:
The below menu specified the decimal position of the following parameters:
##
PARAMETER
DESCRIPTION
OPTIONS
DEFAULT VALUE
1
AMOUNT
Decimal position of the amount data.
0-3
0
2
VOLUME
Decimal position of the volume data.
0-3
2
3
PRICE
Decimal position of the unit price.
0-3
0

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SETTINGS > LON
SETTINGS > LON > COMMON
Set the LON-network node address. It is important to make sure that the device is set with a unique address
in the connected LON-network. From pumps prospective the U2L-bridge appears as POS-system and its
node-address.
##
SUB-MENU
DESCRIPTION
OPTIONS
1
NODE ADDRESS
Set LON node address.
1-127
SETTINGS > IFSF
##
SUB-MENU
DESCRIPTION
1
COMMON
Defines common IFSF parameters
2
PROD NB
Assign product to nozzle number

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SETTINGS > IFSF > COMMON
##
PARAMETER
DESCRIPTION
OPTIONS
DEFAULT VALUE
1
B INTERVAL
Set the interval in seconds when
U2L sends heartbeat message to
the pumps
0-255
10
2
AX BL LEN
Defines the length of each message
block in bytes.
0-255
32
3
COUNTRY CODE
The dial code of the country where
the equipment is installed. 0000 or
9000 is treated as country
independent.
XXXX
0359
4
OPT LIGHT MODE
The mode of the OPT light (not
used)
2
1-255
5
AUTH STATE MODE
The state of the authorization
mode
1
0-1
6
MAX TIME WO PROG
Operational timeout
240
SETTINGS > IFSF > TP
This menu assign product to nozzle number. By default all products are assigned to nozzles with same
number.

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SETTINGS > PUMP
This sub-menu contains the common settings for proper pump control.
SETTINGS > PUMP > COMMON
This sub-menu arranges the relation between the fuelling dispensers (pumps) on the field, their filling
positions (FPs) and the addresses assigned to them.
##
SUB-MENU
DESCRIPTION
OPTIONS
1
PUMP
Sequential Pump number. This number is
for the logical pump in the converter.
1-16
2
ACTIVE
Defines whether this address is active.
YES/NO
3
NODE
The node-address of the real pump
assigned to this position.
1 - 99
4
SUBNODE
The sub-node address of above node that
is defined in the pump.
1-2
5
NB NOZZLES
How many real nozzles has the assigned
pump
0-8
6
REAL ADDRESS
The address assigned from POS-side
1-16
7
NOZ
Nozzle number
1-8
8
PROD NB
Product assigned to this nozzle
1-16