Price CheckerUser's Manual-1-ContentsHARDWAREUTILITIES331.1 Features........................................................... 41.2 Unpacking41.3 Product Overview51.4 Specifications792.1 Keyhole Mounting92.2 VESA Mounting9113.1 Install the Price Checker113.2 SeManager Utility123.3 Export, Import, and Abort the Settings153.4 Broadcast Search and Search by IP16................................................................. 17174.1 Build up a Database174.2 Set Broadcast194.3 Get Started214.4 Data not Found Warning231. Introduction2. How to Mount3. How to Install4. Demonstration Application..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................-3--2-Hardware1. IntroductionThe price checkers incorporate state of the art technology.
Customers can get current in-house prices and information
on promotions immediately from them, which reduce
operation costs and simplify working procedures.
The price checkers bundle with PLU (Price Look Up)
download utility, demonstration application, and BMP
convert utility. PLU function allows a price checker
retrieving data directly in its memory without connecting to
the host, and thus relieves the host's workload. The
demonstration application guides the users to build their
own database easily, and the BMP convert utility serves to
download BMP files presented on a price checker's LCD
display.
The software development kit (SDK) of the price checkers
provides the communication interface between a price
checker and its host computer (as the figure shown below). It
assists the users in developing the applications.245.1 Install PLU245.2 Build PLU Database255.3 Browse PLU List265.4 Download PLU26(For LCD Model Only).. 32327.1 tcpCommCtrl327.2 ConvertBMPCtrl347.3 Display ESC/POS Commands List367.4 PLU Download Commands485. PLU Download Utility6. BMP Convert Utility7. Appendix...............................................................................................................................................................................................................................................................................................................................................................................................................................Note:
In this manual we adopt figures of LCD models.
The instructions can be applied to both models if
not specified.-4--5-1.3 Product Overview··Screen:Scanner:Green color VFD for broadcasting messages oryellow green color LCD for presenting text and graphics
in BMP format.Omni-directional laser or liner CCD scanner.1.1 Features1.2 Unpacking·············VFD 20 x 2 or LCD graphic 15 x 4 display options
TCP/IP communication
Omni-directional laser or optional liner CCD scanner
SDK communication kit and demonstration applicationavailable2 auxiliary RS-232 ports (Reserved)
ESC/POS command compatible
Multiple languages supported
Cost-effectivePrice Checker with VFD 20 x 2 or with LCD graphic 15
x 4
Power Adaptor 110V or 220V
Support CD
User's Manual
Mounting Fixtures (Option)Note:The contents may vary with different options.
If there's any physical damage or missing
p a r t s , p l e a s e c o n t a c t y o u r s u p p l i e r
immediately.
Please keep the packing material as it should
be used when you need to ship back the
device for service.V
VV-7--6-1.4 SpecificationsVFD ModelLCD Model8051
TCP/IP 10/100MbPlenty of code pages224KB256KBIS3480, omni-directional laser scanner
A-50M, omni-directional laser scanner
FCCD-620, liner CCD ScannerCPU
Communication
DisplayFontPLU
Scanner········Keyhole Mounts:VESA Mounts:Vertical Cable Run:
Accessory Bay:Accessory Fixes:Power Jack:LAN Port:RS-232 Port (Reserved):4 screw holes for keyhole mounting.(See Section 2.1 Keyhole Mounting on page 9)4 screw holes for VESA mounts.(See Section 2.2 VESA Mounting on page 9)A slot for cable routing.Accessories such as magnetic stripereader and keyboard can be attached to the price checker
by removing the cover.Screw holes for fixing accessories.The price checker is powered by anexternal power supply plugged into an AC outlet via a
2.0 mm barrel jack. The center pin is positive and the
outer tab is ground.The price checker communicates to the hostvia an Ethernet cable using a 10-conductor RJ-45 plug.The RS-232 ports arereserved for RS-232 devices. If necessary the function
can be released. The 9th pin of the ports can provide
selectable 0V or +5V DC power adjusted by the jumper
switch.Vacuum Fluorescent
Display
Green display color
700 cd/m2 brightness
20 character x 2 line
5 x 7 dot matrix
display pattern
6.4 mm (W) x 9.2
mm (H) character
sizeLiquid Crystal Display
240 x 64 dot module
Yellow green display
color
120 cd/m2 brightness
It can be displayed
either;
15 character x 4 line
16 x 16 dot matrix
display pattern
8mm (W) x 8mm (H)
character size
or
30 character x 4 line
16 x 8 dot matrix
display pattern
4mm (W) x 8mm (H)Default language for
LCD graphic model:
English/GB or
English/Big-5;
Other languages are
upon OEM request-9--8-Decoding CapacityUtilityAuxiliary PortsAuxiliary DevicesEnvironmentUPC/EAN, Code 128, Code 93, Codabar,Interleaved 2 of 5, Code 11, Code 39,
MSI/Plessey, RSS 14 and more (Is3840)BMP converting utility (for LCD model),TCP/IP communication SDK, Demonstration
application, PLU download utilityDB9 RS-232 port x 2, pin 9 provide DC+5V(Reserved)Magnetic card reader, 40-key keypad(Optional)Operating: 0~+45, 10%RH~80%RHStorage: -10~+50, 10%RH~90%RHDimension:2. How to Mount2.1 Keyhole Mounting···Determine the mounting location and screw four T4
screws into the wall. A space of 1/8" to 3/16" must be left
between the head of the screw and the wall.
Place the keyholes on the back housing over the screws
and slide the price checker with a direction of left and
down to fix it in place.Put the solid plate on the price checker's back housing
and fit the screw holes. The hangers on the solid plate
must face down.2.2 VESA Mounting-11--10-···Fasten the solid plate to the price checker's back housing
with 4 M3 screws.
Fasten the hollow plate to the desired mounting location
with 4 T4 screws.
Slide the 4 hangers on the solid plate onto the 4 apertures
of the hollow plate. Lock the two plates with 1 M3 screw.3. How to InstallPlug the power cord into the power jack to power on the
price checker.
Plug the Ethernet RJ-45 cable line into the LAN Port toConnect the price checker to the host.Insert the bundled CD into the PC and open the
subfolder VFD Price Checker or LCD Price Checker
accordingly. Double click the fileSetupto installthe price checker and follow the instructions to
complete the installation.3.1 Install the Price Checker···-13--12-3.2 SeManager UtilityEach price checker contains a TCP/IP Converter serving to
search and configure on-line units. SeManager is a utility
for the TCP/IP Converter that assists the users in finding the
TCP/IP Converter unit connected with the Local Area
Network (LAN) or searching through Wide Area Network
(WAN).Open subfolder "IP Tools," run "jre-1_5_0_06-
windows-i586-p" file to install the JAVA Platform.
Run SeManager. When the window pops up, double
click IPAddress to make basic settings.··· Set Buad (bps) to, Data Format to N81, FlowControl to, Interface to, IP Mode to, Subnet Mask to, and set IPAddress to an effective IP address.9600NONERS-232Static255.255.255.0-15--14-··Click "Edit Device Name" to edit the name of the
price checker. This could help the users recognize
various price checkers.Click "Save to Module" to save all settings you have
configured to the price checker. When the following
boxes pop up, click "Yes" to save the settings to the price
checker and finish the configuration utility.3.3 Export, Import, and Abort the settings···After the settings are configured, click "Export" to
save the settings as a *.txt file. Enter a file name and
click "Save."Click "Import" to call back the *.txt file of the
previous exported settings.Click "Abort" to exit the setting menu.-17--16-3.4 Broadcast Search and Search by IP· Select "Broadcast Search," all price checkers connectedto the host will appear on the window.
Select "Search by IP" and fill a specific IPAddress of
a specific or a specific IP Group you would like to
search, the results will appear on the window.Note:
To this step, the hardware settings are finished.
Refer to the bundled utilities and software
development kit (SDK) to establish your
applications and to communicate your
database with the price checker.Utilities4. Demonstration ApplicationThe Demonstration Application is based on Microsoft
Access Database. It guides the users to build up a database
easily. Also, it can be used as an example in designing an
application.4.1 Build up a DatabaseATTENTION:
The utilities/applications introduced below
are for demonstration only. In no event will the
manufacturer be liable for revising, correcting,
or rewriting the utilities/applications.Note:Note:Demonstration Application only allows the
host dealing with requests of 4 to 5 price
checkers simultaneously.Disconnecting the price checker from the
host is required while building a Database
and viewing a Price List.-19--18-···Execute>>>>. When the window pops up, selectClick "Add New" to add a new record. Click "Save"to save the record. Search, delete, and edit data by
clicking corresponding buttons.After a database has been built up, selectPrice Listto review the records.StartAll ProgramsVFD/LCD PriceCheckerDatabase.For VFD Model4.2 Set Broadcast·Click "Broadcast" to enter massages displaying on VFD
price checker's screen. The length of the messages
should not exceed 20 characters with spaces. Broadcast
Postpone Time determines in how many seconds the
broadcasts will be started since the machine is idle.
Broadcast in Turn Time Interval decides the time a
message stays on the screen. Broadcast Processing
Speed is the displaying speed of messages.-20--21-· For LCD ModelClick "Broadcast" to select the BMP files displaying on
LCD price checker's screen. The files can be multiply
selected by pressing the mouse's left button with the
<Ctrl> or <Shift> key. Then click "BMP File To List
Box." Broadcast Postpone Time determines in how
many seconds the broadcasts will be started since no
barcode is scanned.4.3 Get StartedAfter building a database and setting broadcasts, follow the
steps below to start operating the price checker.Make sure the price checker is powered on and its
Ethernet cable is properly connected. (Refer to Section
3.1 Install the Price Checker on page 11)
Select "Connect," set Node IP to an effective IP address
and set Port to 4000.····Click the Connect button. The green light on the
window turns bright indicating the price checker is in
connection with the host.Point a barcode to the scanner window of the price
checker to scan an item. The product information will be
shown on the price checkers display.4.4 Data not Found Warning.After a barcode is scanned, the price checker will send an
inquiry request to the host through TCP/IP. If the
Demonstration Application of the host cannot find the
data of the scanned barcode in its database, it will reply
the price checker that no data is found and thus the
message "No data, please try again" will appear on the
price checker's display. Different messages could be
delivered according to the design of various applications.-If neither the price checker finds the data of a scannedbarcode through its PLU function nor the host replies in 5
seconds, the device itself will send the message "Error,
Please Contact With Staff" on its display. The display
will return to the initial screen 5 seconds later.- No data, please try againError, Please Contact With Staff-22--23-5. PLU Download UtilityPLU (Price Look Up) function allows a price checker
retrieving data directly in its memory. It provides an option
to operate the price checker without connecting to the PC.
This function can be well applied to small-scale stores or to
unique environment.
VFD price checker carries 224 KB flash memory for PLU,
which can store a maximum of 3185 records; while LCD
price checker carries 256 KB flash memory for PLU, which
can store a maximum of 2048 records.
The data should be downloaded to each price checker's PLU
memory; therefore, it is highly recommended that only
download fixed and frequently used records to price
checkers to avoid updating data from time to time.Insert the bundled CD into the computer and open the
subfolder PLU. Double click the file "setup" and follow the
instructions to complete the installation.5.1 Install PLU5.2 Build PLU DatabaseExecute>>>>. Select "BuildPLU Database" on the window. Click "Add New" and fill in
the blanks with the product data. Then click "Save" to save
the record. Search, delete, and edit data by clicking
corresponding buttons.StartAll ProgramsPLU-24--25-5.3 Browse PLU List5.4 Download PLUSelect Browse PLU List to browse the built database.After a PLU database has been built, follow the steps below
to download PLU to the price checker.Make sure the price checker is powered on and its
Ethernet cable is connected. (Refer to Section 3.1 Install
the Price Checker on page 11)····Set Node IP to an effective IP address. Set Port to 4000.
Click "Connect" to connect the price checker to the PC.
Click "Download" to download the built data to the
price checker. A box will pop up to indicate Download
OK.If there's data already downloaded in the price checker's
PLU memory, on the next download, a box will pop up
asking whether to purge all PLU records in the price
checker or not before downloading. If "Yes" is selected,
all data downloaded in the price checker will be erased.
If "No" is selected, new records are downloaded with
the original data keeping in PLU.-26--27-··Thesign on the left side of the PLU list markswhere the downloading begins with.
As the figure shown below, only the marked records
will be downloaded to the price checker.If PLU memory is full, the warning window will pop up
and the download procedure will be terminated while
the data already downloaded is kept in the memory.6. BMP Convert Utility (For LCD Model Only)The LCD graphic display of LCD price checkers can
display graphics in BMP format. BMP Convert Utility
serves to download drawings to the price checker. The
measure of the BMP file must be 240 Width X 64 Height
and only black and white color are accepted.Insert the bundled CD into the PC and open the
subfolder BMP Convert Utility. Double click the file
"setup" and follow the instructions to complete the
installation.·-28--29-··Execute>>>>t.Set Node IP to an effective IP address and set Port to
4000. Select the file to be downloaded to the price
checker and click "Send to LCD Price Checker."Select a file and click "Save To File," the selected file
will be saved as a [*.txt] file in the format of Esc
Command. The file can be opened with Notepad for a
programmer to view the command.StartAll ProgramsBMPConver-30--31-7. Appendix7.1 tcpCommCtrlPropertiesProperitiesDescription
Returns/Sets the background color
used to display in an object.
Gets the current buffer length received
from remote price checker. Read-only
and unavailable at design time.
Returns the IP address of the local
machine in the IP address dotted string
format (xxx.xxx.xxx.xxx). Read-only
and unavailable at design time.
Returns a string containing the local
machine name. Returns the local
machine name. Read-only, and
unavailable at design time.
Returns or sets the local port to use.
Returns a long with port number in
local machine byte-order. Read/Write
and available at design time. NodeIP
Returns/Sets the IP to be identified the
remote price checker.
Returns/Sets the port to be connected
to on the remote price checker.
Returns the state of the control,
expressed as an enumerated type.
Read-only and unavailable at designBackColorInbufferCountLocalIPLocalHostNameLocalPortNodePortStatetime. Returns an integer that indicates
the state of the control, expressed as
an enumerated type.MethodsDescription
Start to establish a connection with
specified remote price checker.
Close connect with remote price
checker.
Get the current block of data from
remote price checker.
Sends data to a remote computer.MethodsDescription
Occurs whenever an error accurs in
background processing (for example,
failed to Link, or failed to send data to
or receive data from price checker).MethodsEventsLinkOFFDataInputDataOutputError-32--33-0Default. Closed1Open2Listening7Connected9ErrorValueDescription7.2 ConvertBMPCtrlPropertiesProperitiesDescription
Returns/Sets the background color
used to display in an object.
Gets the current buffer length received
from remote price checker. Read-only
and unavailable at design time.
Returns the IP address of the local
machine in the IP address dotted string
format (xxx.xxx.xxx.xxx). Read-only
and unavailable at design time.
Returns a string containing the local
machine name. Returns the local
machine name. Read-only, and
unavailable at design time.
Returns or sets the local port to use.
Returns a long with port number in
local machine byte-order. Read/Write
and available at design time. NodeIP
Returns/Sets the IP to be identified the
remote price checker.
Returns/Sets the port to be connected
to on the remote price checker.
Returns the state of the control,
expressed as an enumerated type.
Read-only and unavailable at designBackColorInbufferCountLocalIPLocalHostNameLocalPortNodePortStatetime. Returns an integer that indicates
the state of the control, expressed as
an enumerated type.MethodsDescription
Start to establish a connection with
specified remote price checker.
Close connect with remote price
checker.
Get the current block of data from
remote price checker.
Sends data to a remote computer.MethodsDescription
Occurs whenever an error accurs in
background processing (for example,
failed to Link, or failed to send data to
or receive data from price checker).MethodsEventsLinkOFFDataInputDataOutputError-34--35-0Default. Closed1Open2Listening7Connected9ErrorValueDescription7.3 Display ESC/POS Commands ListCommandCode description Function description
(Hex)
08Move cursor left09Move cursor right0AMove cursor down1F 0AMove cursor up0BMove cursor to home position0DMove cursor to left-most position1F 0DMove cursor to right-most position1F 42Move cursor to bottom position1F 24 n mMove cursor to specified position;1n (column)column and mth line20 m (line)= 1 or 2 nth
0CClear display screen18Clear cursor line1B 3D nSelect peripheral device1n31B 40Initialize display1F 01Specify overwrite mode1F 02Specify vertical scroll mode1F 03Specify horizontal scroll mode1B 25 nSelect/cancel user-defined1n3character setBS
HT
LF
US LF
HOM
CR
US CR
US B
US $ n mCLR
CAN
ESC = nESC @
US MD1
US MD2
US MD3
ESC % nCommandCode description Function description
(Hex)
1B 26 s n mDefine user-defined character sets = 1, 32nm1261B 3F nCancel user-defined characters32n1261B 52 nSelect an international character0n13set1B 74 nSelect character code table1B 57 n mSelect/cancel window range1n4M = 0, 1, 48, 49
1F 43 nSelect/cancel cursor displayN = 0, 1, 48, 49
1F 45 nSet display screen blink interval0n2551F 54 h mSet and display time counter0h230m591F 55Display time counter1F 58 nBrightness adjustment1n41F 72 nSelect/cancel reversen = 0,1,48,49characters1F 76 nStatus confirmation byn = 0,1,48,49DTR signal1F 40Execute self-test1F 3AStart/end macro definitionESC & s n mESC ? NESC R nESC t n
ESC W n mUS C nUS E nUS T h mUS U
US X nUS r nUS v nUS @
US :-36--37--38--39-HT - Move cursor rightLF - Move cursor downUS LF - Move cursor upCommand Name:
Format:Description:Command Name:
Format:Description:Command Name:
Format:Description:HTASCIIHTHex09Decimal9Moves the cursor one character
position to the right.LFASCIILFHex0ADecimal10Moves the cursor down one line.US LFASCIIUS LFHex1F 0ADecimal31 10Moves the cursor up one line.------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------CommandCode description Function description
(Hex)
1F 5E n mExecute and quit macro0n2550m2551D 76 30Display bit image0m3,48m510xL2550yL2550d255K=(xL+xH x 256)
x (yL+yH x 256)
(k0)US ^ n mGS v 0 m xLxH yL yH d1dkBSASCIIBSHex08Decimal8Moves the cursor one character
position to the left.Basic Command Description:BS - Move cursor leftCommand Name:
Format:Description:---------------------------------------------------------------------40--41-HOM - Move cursor to home positionCR - Move cursor to left-most positionUS CR - Move cursor to right-most positionCommand Name:
Format:Description:Command Name:
Format:Description:Command Name:
Format:HOMASCIIHOMHex0BDecimal11Moves the cursor to the left-most
position on the upper line (home
position). Home position indicates
the first column of the upper line.CRASCIICRHex0DDecimal13Moves the cursor to the left-most
position on the current line.
The cursor is moved only within the
current window.US CRASCIIUS CRHex1F 0DDecimal31 13----------------------------------------------------------------------------------------------------------------------------------------Description:Command Name:
Format:Description:Command Name:
Format:Description:Moves the cursor to the right-most
position on the current line.
The cursor is moved only within
the current window.US BASCIIUS BHex1F 42Decimal31 66Moves the cursor to the bottom
position.US $ n mASCIIUS $ n mHex1F 24 n mDecimal31 36 n mMoves the cursor to the nth column
on the mth line. If a value
exceeding the range is specified for
n (column) and/or m (line), this
command is ignored and the cursor
doesn'tmove.------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------US B - Move cursor to bottom positionUS $ n m - Move cursor to specified position-42--43-CLRClear display screenCANClear cursor lineESC = nSelect peripheral deviceCommand Name:
Format:Description:Command Name:
Format:Description:Command Name:
Format:Range:CLRASCIICLRHex0CDecimal12Clears all the displayed characters.
After the command is executed, the
cursor moves to the home position.CANASCIICANHex18Decimal24Clears the line containing the cursor.
After this command is executed, the
cursor moves to the left-most
position on the current line.ESC= nASCIIESC= nHex1B 3D nDecimal 27 61 n
1 <= n <= 3----------------------------------------------------------------------------------------------------------------------------------------Description:Example:Command Name:
Format:Description:Selects the device(s) to which the
host computer sends data, using the
value(s) of n from the following
table:ESC = 0 Printer, Display are canceled.
ESC = 1 Printer is selected.
ESC = 2 Display is selected.
ESC = 3 Printer, Display are selected.ESC@ASCIIESC@Hex1B 40Decimal27 64Resets the various display settings
to their initial values. The software
settings are reset to their power-on
values. The data in the receive
buffer is not clearedBitOff/OnHexDecimalFunction0Off(*)000Printer canceled.On011Printer selected.1Off000Display canceled.On022Display selected.2 to 7------Undefined.(*):Default setting------------------------------------------------------------------------------------------------------------------------------------------ESC @Initialize display-44--45-US MD1Select overwrite modeUS MD2Select vertical scroll modeCommand Name:
Format:Description:Notes:Command Name:
Format:Description:US MD1ASCIIUS MD1Hex1F 01Decimal31 1Selects overwrite mode as the screen
display mode. In overwrite mode,
entering a character code moves the
cursor to the left end of the lower
line when the cursor is at the right
end of the upper line, and to the left
end of the upper line when the
cursor is at the right end of the
lower line.
Selects overwrite mode cancels
horizontal or vertical scroll mode.US MD2ASCIIUS MD2Hex1F 02Decimal312Selects vertical scroll mode as the
screen display mode. In vertical
scroll mode, entering a character
code moves the cursor to the left end
of the lower line when the cursor is
at the right end of the upper line,--------------------------------------------------------------------scrolls the characters displayed on
the lower line to the upper line, and
clears the lower line when the
cursor is at the right end of the
lower line.
Selects vertical scroll mode cancels
horizontal or overwrite mode.US MD3ASCIIGS v 0 m xL
xH yL yH d1...dkHex1D 76 30 m xL xH yL
yH d1...dkDecimal29 118 48 m xL xH yL
yH d1...dkSelects horizontal scroll mode as the
screen display mode. In horizontal
scroll mode, entering a character
code scrolls all displayed characters
one character to the left, then
displays the new character at the
right end.
Selects horizontal scroll mode
cancels vertical scroll or overwrite
mode.Notes:Command Name:
Format:Description:Notes:----------------------------------------------------------------------------------------------------------------------------------------US MD3Select horizontal scroll mode-46--47-GS v 0 m xL xH yL yH d1.dkDisplay bit imageCommand Name:Format:Description:Notes:GS LGS WGS v 0 m xL xH yL
yH d1.dkASCIIUS MD3Hex1F 03Decimal31 3Selects Raster bit-image mode. The value
of m selects the mode, as follows:xL, xH, select the number of data bits(xL+xH?256) in the horizontal direction for
the bit image.yL, yH, select the number of data bits(yL+yH?256) in the vertical direction for
the bit image.In standard mode, this command iseffective only when there is no data in the
print buffer.This command has no effect in all printmodes (character size, emphasized, double-
strike, upside-down, underline, white/black
reverse printing, etc.) for raster bit image.If the printing area width set byandis less than the minimum width, theprinting area is extended to the minimumwidth only on the line in question. The
minimum width means 1 dot in normal
(m=0, 48) and double-height (m=2, 50), 2
dots in double-width (m=1, 49) and
quadruple (m=3, 51) modes.Data outside the printing area is read inand discarded on a dot-by-dot basis.The position at which subsequentcharacters are to be printed for raster bit
image is specified by(Horizontal Tab),(Set absolute print position), ESC ??( Set relative print position), and(Setleft margin ). If the position at which
subsequent characters are to be printed is
not a multiple of 8, print speed may decline.The(Select justification) settingis also effective on raster bit images.When this command is received duringmacro definition, the printer ends macro
definition, and begins performing this
command. The definition of this command
should be cleared.d indicates the bit-image data. Set time abit to 1 prints a dot and setting it to 0 does
not print a dot.
When xL+xH?256=64HTESC $GS LESC a[Example]----------------------------------------------------------------------48-7.4 PLU Download CommandsPurge all PLU records in a price checkerDownload a PLU record (including barcode data,
product description, and price) to a price checkerCheck the connection of a price checkerSend from the PC: 1D(GS) 78(x)
If the records are successfully purged, the price checker
will reply 06(ACK). If not, the price checker will reply
15(NAK).Send from the PC: 1D(GS) 77(w)0A(LF): Barcode Data (at most 30characters)0D(CR): Product Description (at most40 characters for VFD price
checker, 90 characters for LCD
price checker)Integrate the price into the product description.
PLU records are appended one by one to a price checker.
If the record is successfully downloaded, the price checkerwill reply 06(ACK). If not, the price checker will reply
15(NAK)..Send from the PC: 1F 01 1D 3F
VFD price checker will reply 0A. LCD price checker will
reply 0D.------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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