L3 Systems KeyAT-4 User manual

KeyAT-4
Version 4.0
RS-232 Copyright 2006
Keyboard L3 Systems, Inc.
Port Adapter Redmond, WA
3
Systems
L3 Systems, Inc.
KeyAT-4 Part#SA0064
www.L3sys.com
Pb
RoHS
Computer
PS/2
Keyboard
Serial No.
2602249
RS-232
PS/2

Quick Reference
Reference Description Pg.
Serial Connector Pin-outs: RS-232 Connector 2
PS/2 Connectors Pin-outs: Keyboard/Computer Connectors 3
Command Description Pg.
Set to character mode ~C Send ASCII chars 4
ASCII hex mode ~H Send Hex ASCII chars 5
Keyboard code mode ~K Send direct key codes 5
DOS scan code mode ~S Send DOS scan codes 5
Turn off Commands ~@ Turn off commands (~anything) 4
Send scan code ~:nn Sends scan code nn 5
Scan code key down ~+nn Sends key down, scan code nn 5
Scan code key up ~-nn Sends key up, scan code nn 5
Immediate turn around ~I Data interpreted as received 6
Line turn around* ~L Data buffered until <Enter> 6
Monitor Mode On/Off ~M / ~N Monitor keyboard, key codes 6
Qwerty Monitor On/Off ~Q / ~N Monitor keyboard, ASCII 6
Display ON/OFF LEDs ~Dnn Sets keyboard LED status to nn 7
Transfer to keyboard ~Xnn Sends hex byte nn to keyboard 7
Status request ~? Response = AA-EELLDBTM 6
Sleep ~Znn Sleeps nn seconds 7
Set turnaround delay ~PnnSets turnaround to nn milli-sec 6
Send CR mode ~F Sends <CR> through 6
Setup Mode ~*SETUP Enter Setup Mode, Commands
below: 8
Command Pg. Command Pg.
D Set Config to default 9LK Load Scan Code Table 9
LC Load Config string, 9PK Print Scan CodeTable 10
PC Print Config string 8EK Erase Key Scan Codes10
LP Load Power-On String
10 T
Test Keyboard Interface 11
PP Print Power-on String 10 H Help –Prints help info 8
LR Load Reset String 11 V Print Version information 7
PR Print Reset String 11 Q Quit Setup Mode 7
Reset ~~~~~~~
~~~ Reset KeyAT & Enable commands (ten ~ characters) 10
Reference Description Pg.
Special Characters ^C send Ctrl “C”, ~41 Sends ASCII Hex 41 12
Examples Examples of KeyAT Commands 12
Scan Code Table Table of Scan Code values 13
ASCII Scan Code Table Table of ASCII Characters & Scan Codes 15
NOTE: LED Solid=Keyboard activity, Blinking=RS-232 Activity

KeyAT-4 Keyboard Port Adapter
L3 Systems 15/19/2007
Introduction
The KeyAT keyboard port adapter allows you to send keyboard keystrokes to a
computer via an RS-232 interface. It can also be used to convert a PS/2 keyboard to
send RS-232 data. Typical uses for the KeyAT are:
•Testing software -With the help of a KeyAT, you can send keys that
simulate user input from another computer using RS-232 communications.
•Remote Access -The KeyAT allows remote access to a system where the
software does not provide any other method.
•Monitoring Keyboard sessions -The KeyAT can be used to monitor
keyboard sessions. This can be helpful to develop regression test data or to
detect keystrokes that are causing problems with target software.
•Serial Keyboard -You can use the KeyAT to send and receive from a
Keyboard attached to an RS-232 port.
•Attaching input devices –Allows you to attach RS-232 devices to the
keyboard port such as bar code readers, scales, and credit card readers.
Connections
The following illustrates a typical connection of the KeyAT.
1. The keyboard connects to the 6-pin mini-DIN “To Keyboard”connector.
2. A 6PIN male-to-male Mini-DIN cable (PN CL0008) is supplied to connect the
KeyAT to the computer.
3. The Serial port with RS232 cable, typically a DB9S to DB9P cable, [PN CL0005, not
supplied] See Serial Port Operation section for more details.
KeyAT
"To Keyboard"
RS-232
PS/2
"To Computer"
PS/2
When a keystroke is received from the keyboard, the RS232 port is blocked. Likewise,
when an RS232 command is received, the keyboard is blocked. Note: simultaneous use
in any configuration is discouraged.

KeyAT-4 Keyboard Port Adapter
5/19/2007 2L3 Systems
Status Indicator
A red status indicator located on the side of the KeyAT indicates port activity. It turns
solid red when the attached keyboard port is being used. It blinks whenever the RS-232
port is active.
Serial Port Connector
The port is configured as a DCE device (it connects to a computer like a modem). On
the 9 pin DB-9S connector, it transmits data on pin 2 and receives data on pin 3. No
other RS-232 signal is required for it to operate.
Pin 6Pin 9
Pin 1
Pin 5
Pin Signal KB232 Function
1 DCD RS-232 Output (High when Ready)
2 RX (Receive) from KB232 RS-232 Output
3 TX (Transmit) to KB232 RS-232 Input
4 DTR RS-232 Input (Not Required)
5 Signal Ground Ground
6 DSR RS-232 Output (High when Ready)
7 RTS Connected to RTS
8 CTS Connected to CTS
9 RI / +5V Input If K1 installed, connected to +5V
Warning: do not connect this unless
powering KeyAT from external source.

KeyAT-4Keyboard Port Adapter
L3 Systems 35/19/2007
KeyAT Keyboard & PC Mini-DIN Connector
The following connector shows the pin definitions for the two 6pin Min-DIN connectors.
If the application is an RS-232 keyboard, the computer Mini-DIN connector can be used
to provide 5 volts power.
K1 Jumper
K1 connects DB-9 Pin 9 to 5 volts. This can be used to power KeyAT from DB-9
connector. Warning: This is not normally connected. If 5V power is connected to
PC, then damage can occur if also connected to external supply!
+5V
Pin 4
GND
Pin 3
CLOCK
Pin 5
Male “cable” connector
DATA
Pin 1
12
34
56
1
234
56
CLOCK
Pin 5
GND
Pin 3
DATA
Pin 1
+5V
Pin 4
KeyRF 6 PIN
Mini-DIN
Connector
Female “panel” connector

KeyAT-4 Keyboard Port Adapter
5/19/2007 4L3 Systems
Sending Data
The main job of the KeyAT is to transfer data from the RS-232 port and send it through
to the computer's keyboard port. Data can be sent using ASCII, ASCII control codes,
DOS scan codes, keyboard scan codes or ASCII hex. Aline can have a maximum
length of 80 characters and should end with an <ENTER> (CR, hex 0D). When using
immediate mode, data and commands are interpreted as received, and buffered up to 80
characters. If you get more than 80 characters ahead of the computer, the additional
characters will be ignored.
In line turn-around mode, the KeyAT sends a colon prompt after the data has been
processed, signaling that it is ready for another command. The example shows the ASCII
characters ‘DIR<ENTER>’ being sent through the KeyAT.
Example: KeyAT, V4.0x1, [C]L3 Systems, Inc. 2005
:DIR^M<ENTER>
:
Commands
Commands are instructions to the KeyAT to do something other than just pass data
through to the computer. All commands begin with a ~ (tilde, hex 7E) character followed
by a command character and then in some cases some data.
~@ Disable Commands –All commands are disabled until 10 consecutive tildes
(~~~~~~~~~~) or reset/power cycle.
~~~~~~~~~~ Reset/Enable Commands –If commands are disabled, sending 10
consecutive tilde (~) characters will enable commands. If commands
are enabled, this will reset the KeyAT (& run power-up string if
loaded).
Data Mode Commands
The four mode commands set the way data is interpreted by the KeyAT. A mode is set
until another mode is given or until a power failure occurs.
~C Character Mode -is the default mode of operation. When this mode is set, any
ASCII character except ~ (tilde, hex 7E), ^ (caret, hex 5E), and CR (return, hex
0D) is converted to the scan codes for that character. Each ASCII character will
be sent to the computer with the corresponding “make” and “release” codes.
Allow enough time for the codes to be sent through to the computer.
Control codes may be sent by a combination of a ^ (caret, hex 5E), and the
corresponding letter. For example, a control C (Hex 03) is ^C.
~H Hex ASCII Mode -Data is interpreted as hexadecimal encoded ASCII. For
example, to send the computer the character 'A', you would need to send its
hexadecimal ASCII value (Hex 41) as two ASCII digits, 4 and 1.

KeyAT-4Keyboard Port Adapter
L3 Systems 55/19/2007
~S Scan Code Mode -In this mode, data is translated to the corresponding keyboard
scan codes. For an ASCII transfer, each pair of ASCII encoded characters is
interpreted as a DOS scan code. DOS assigns each key a DOS scan code. Note
that all DOS scan codes are sent complete with make and break sequences.
~K Key Code Mode -In this mode, codes are sent directly to the computer without
interpretation. For an ASCII transfer, each pair of ASCII encoded characters are
interpreted as one keyboard code. Care should be taken in using keyboard scan
codes, as the computer can be left in a very confused state if the scan code
sequence is not properly completed.
Send a scan code
If you want to send a scan code without going into scan code mode, then use the ~:nn
command. This is useful for the occasional function key, arrow key or any other keys
that doesn’t have an ASCII equivalent. See the scan code table later on for a list of valid
scan codes.
~:nn Send Scan Code –This scan code nn.
Example: :~:73<ENTER> (sends PgUp)
Up/Down Scan Codes
Use these two commands to send a key down or a key up to the computer. A common
use is for Shift, Alt and Cntl keys, which vary the meaning of successive scan codes. See
the scan code table later on for a list of valid scan codes.
~+nn Key down Scan Code –This sends just the key down (make) sequence for
scan code nn.
~-nn Key up Scan Code –This sends just the key up (break) sequence for scan
code nn.
Example:
:~+56~:62~-56<ENTER> (sends <Alt>F4)
where: ~+56 Sends Alt down sequence
~:62 Sends F4 scan code
~-56 Sends Alt up sequence

KeyAT-4 Keyboard Port Adapter
5/19/2007 6L3 Systems
Turn around setting
Data can be sent and interpreted one line at a time, or be processed immediately. The
default setting is for line turn around mode (~L). This is better for automated control and
provides more reliable interaction. Immediate turn around mode (~I) can better simulate
keyboard operation. The setting persists until the next ~I or ~L command, or until power
is cycled.
~L Line Turn Around -Set to a line oriented basis, each line must end with an
<ENTER> or <CR>, hex OD.
~F Send <CR> mode -This allows the <CR> to be sent on to the computer as an
<ENTER> key.
~I Immediate Turn-around -Data is interpreted 'on-the-fly'. Note that in this
mode <ENTER> or <CR> (Hex 0D) is not a special character, and passed on to
the computer. XON/XOFF flow control is provided. However, caution should
exercised, as it is easy to overrun the PC’s keyboard receive buffer.
~Pnn Set Turn Around Delay (nn milliseconds) -This sets the delay that the
KeyATwaits before responding to a command. The default setting is 0. (Note:
you must send two digits. For 7 milliseconds, send ~P07.)
Keyboard Monitor
The KeyAT can send either binary key codes (~M) or ASCII translations (~Q) of keys
struck at the local keyboard through to the RS-232 port. The QWERTY monitor can be
used for constructing an RS-232 keyboard, and it will send only keys with ASCII
translations.
~M Monitor ON –Monitor Key Scan codes.
~Q QWERTY Monitor ON –Monitor ASCII translation
~N Monitor OFF -Turn keyboard monitor off (default).
Status Request
~? Request Status -The format of the response is:
Stat=LDTM where:
LLED status:“0”=All Off, “1”=Scroll-Lock ON, “2”=Num-Lock ON
“3”=Scroll-Lock & Num-Lock ON , “4”=Caps-Lock ON
“5”=Scroll-Lock & Caps-Lock ON , “6”=Scroll-Lock & Caps-Lock ON
“7”=Scroll-Lock, Num-Lock & Caps-Lock ON
DData mode (C = char, H = Hex, K = Key code, S = Scan code)
TTurn Around (I = Immediate, L = Line oriented)
MMonitor mode (M = Monitor on, Q = Qwerty monitor, N = None)

KeyAT-4Keyboard Port Adapter
L3 Systems 75/19/2007
Sleep
~Znn Sleep –Use sleep to provide delays. The value nn is in seconds (approx). This
can be helpful when doing scripting, allowing the KeyAT to help you pace
keystrokes, not out-running the application.
*~Z15<ENTER> (delays 15 seconds)
Keyboard Commands
The following two commands send data to the attached keyboard. Note: Do not send
keyboard commands at the same time you are sending data to the computer, as this
can cause the keyboard to miss the command.
Controlling Keyboard LED’s
~Dnn Set/Clear Keyboard LED’s -Use this command to turn on or off local
keyboard LED indicators. The nn field is an ASCII hex encoded binary field,
where:
b0=Scroll lock b1=Num Lock b2=Caps Lock
Examples: ~D01 Scroll Lock on, Caps & Num Lock off,
~D04 Caps Lock on, Scroll & Num Lock off,
~D00 Turn off all LEDs
Sending Data to the Keyboard
~Xnn Send Data to Keyboard -Use this command to send the ASCII hex encoded
byte nn to the keyboard. This command requires technical knowledge of
keyboards.
Setup Mode
The KeyAT has commands for configuration, status and testing which are accessed by
entering setup mode with following command:
*~*SETUP<ENTER>
Setup>
Leaving Setup Mode
You can exit setup mode with the “Q” commad:
Setup>Q<ENTER>
:
Displaying Version
The firmware version can be displayed with the “V” commad:
Setup>V<ENTER>
KeyAT, V4.0x1, [C]L3 Systems, Inc. 2006
:

KeyAT-4 Keyboard Port Adapter
5/19/2007 8L3 Systems
Help Command
You can display a short setup help list with the “Q” commad:
Setup>H<ENTER>
~:nn Scancode nn
~-nn/~+nn Make/Break Scancode nn
~Knn Send Keycode nn
~Dnn Set Keyboard LEDs
~Xnn Send Keyboard byte nn
~Znn Delay nn
~nn ASCII byte
^X Control-X
--- Setup Commands ---
Pn-Print, Ln<String>-Load
n=C - Config Buffer
n=K - Key Scan Codes
n=P - Power-On Buffer
n=R - Reset Buffer
DC Set Default Config
EK Erase Key Codes
H Help, V Version, I LED Status
:
Configuration string
The KeyAT stores operating parameters in a configuration string located in non-volatile
flash memory. These include parameters such as the settings of the baud rate, enabling
command mode and determining the turn-around character.
Displaying Configuration
To display the configuration string, do the following command. (Note that the results
shown below are the default settings.)
Setup>PC<ENTER> (Displays Configuration Data)
9600,NoPar,YesCmd,NoCR,LM,NM,0D,7E
Setup>
The configuration settings are defined as follows. The underlined characters represent
the minimum required entry in each field:
9600 –Baud Rate: 1200, 2400, 4800,9600, 19200,38400, and57600 are valid
parameters. 9600 is the default setting.
NoPar –RS-232 Parity: Valid settings areNoPar for no parity, Even for even parity,
and Odd for odd parity. The default isNoPar.
YesCmd–Command mode: YesCmd enablesKeyAT commands and NoCmd
disables these commands. The default isYesCmd.
NoCR –CR Pass through mode: NoCR does not send through the <CR> or
<ENTER> at end of command line. YesCR will send it through.
LM–Entry Mode: LM (default) enables “line Mode”, IM enables Immediate mode
NM –Monitor Mode:NM (default) No Monitor Mode, MM enables Monitor Mode
QM enables QWERTY mode
OD –End-of-line character: Default is0D, (<CR> or <ENTER> character)
7E–Command prefix character:Default is 7E, tilde (~) character.

KeyAT-4Keyboard Port Adapter
L3 Systems 95/19/2007
Changing Configuration
You can change operating parameters of the KeyAT adapter with the LC command.
The following example shows the baud rate changed to 4800 from default, and enabling
the “CR pass-through mode”:
Setup>LC4800,NoPar,YesCmd,YesCR,LM,NM,0D,7E<ENTER>
The following shows the minimal entry for the same setting:
Setup>LC48,N,Y,Y,LM,NM,0D,7E<ENTER>
Powering on to Default Settings
Should you make a mistake in configuring the settings of the KeyAT configuration string,
you can force it to use the default settings if you send an RS-232 “Break” condition to
the when applying power, This will cause the KeyAT to return to the following settings:
9600,NoPar,YesCmd,NoCR,LM,NM,0D,7E
Specifically, this will force it operate at 9600 baud with no parity. If you use the
application “Tera Term”, send ten Alt-B’s and then quickly connect the KeyAT while
the break is in progress.
Restoring Configuration Default Settings
Restore the KeyAT default configuration with the D command:
Setup>D<ENTER> (Restores default settings)
Setup>
Key Scan Code Table
The KeyAT allows you to define custom keyboard scan codes for any ASCII character
in the Code Table.
Loading Key Scan Codes
The LKcommand loads a key scan code table entry:
LKaa=bb,cc… Loading Key Scan Codes
Example:Setup>LK2A=79,F0,79<ENTER> (* maps to a “+” key)
In the above example, an entry is made to define what happens when the ASCII asterisk
character “*” is sent via the RS-232 port to the computer. Normal mappings are shown
in the ASCII Scan Code table at the end of this manual. The custom scan code table can
be used to map keys to any ASCII character.
The key code “79” defines the pressing of the “+” key, and the key codes “F0” and “79”
define the removal of the “+” key. Refer to the “Scan codes” table at the end of this
manual for key code values.
The table space allows for 50 entries

KeyAT-4 Keyboard Port Adapter
5/19/2007 10 L3 Systems
Displaying Code Table
The code table can be displayed to review entries:
:PK<ENTER> (Displays Code Table)
AS Codes
-- ------
2A 79 F0 79 ßShows data of example above
:
Erasing the Key Code Table
The “EK” command deletesall entries in the Key Scan Code table. If you want to
change existing entries in the code table, you must clear the table with the “EK”
command and re-enter the codes with the “LK” command.
:EK<ENTER> (EraseKey Scan Code Table)
:
Power On String
The KeyAT can execute a command string when power is applied. This string can
include keys to send to the computer and/or KeyAT commands. It’s strongly
recommended when using this feature to start the string with a delay command (~Znn) to
allow the KeyAT to wait for the computer to finish its power on sequence.
Loading the Power ON String
The LP command loads a code table entry:
LP=<String>Loading Power On String
Example: Setup>LP=~Z80DIR^M<ENTER> (Delay 80 seconds, & send “DIR<ENTER>”)
Setup>
In the above example, when power is applied to the KeyAT, it first delays 80 seconds,
and then sends a “DIR<Enter>” command.
Displaying Power on string
The PP command displays the Power On string:
Setup>PP<ENTER>
~Z80DIR^M (Shows Power On string loaded in example above)
Setup>

KeyAT-4Keyboard Port Adapter
L3 Systems 11 5/19/2007
Reset String
The KeyAT can execute a command string whenever the computer sends the keyboard
a reset. This string can include keys to send to the computer and/or KeyAT commands.
It’s strongly recommended when using this feature to start the string with a delay
command (~Znn) to allow the KeyAT to wait for the computer to finish its reset
sequence.
Loading the Reset String
The LR command loads a code table entry:
LR=<String> Loading Reset String
Example: Setup>LR=~Z80DIR^M<ENTER> (Delay 80 seconds, & send “DIR<ENTER>”)
Setup>
In the above example, when the computer sends the keyboard a reset, it first delays 80
seconds, and then sends a “DIR<Enter>” command.
Displaying Reset string
The PR command displays the Power On string:
Setup>PR<ENTER>
~Z80DIR^M (Shows Reset string loaded in example above)
Setup>
Test KeyAT
TTest KeyAT -This command to the KeyAT causes it to undergo tests to validate
the keyboard and computer interface. You will see the keyboard LED’s cycle,
testing the keyboard interface.
Setup>Y<ENTER>
Test: <Enter> to stop (Keyboard LEDs cycle, pressing <ENTER> halts test)
Setup>
The test runs until<ENTER> is received.
Special Characters
ASCII Hex (~nn) -ASCII hex characters can be sent by sending the hex code preceded
by a ~(tilde, hex 7E). For example, to send an M character in hex, send a ~4D.
Tilde and Caret Characters (~~ ^^) -To send a ~ (tilde, hex 7E) or ^ (caret, hex 5E)
character, send the character twice. For example a ~~ will send the key codes for
the ASCII character ~.

KeyAT-4 Keyboard Port Adapter
5/19/2007 12 L3 Systems
Tera Term
For use with Microsoft Windows, we suggest using the application called Tera Term. It’s
free to download and use. Tera Term is a terminal emulator that also has a macro (or
scripting) capability. The terminal emulator provides a simple way to test and experiment
the operation of the KeyAT. You can also create scripts to automate the keystrokes.
Examples:
Sending Keys that don’t have ASCII eqvivalents:
:~:59<ENTER> Sends F1 key
:~+29~:59~-29<ENTER> Sends Ctrl-F1 key
:~+56~:59~-56<ENTER> Sends Alt-F1 key
:~:72<ENTER> Sends Up-Arrow key
Use of different data modes:
:~C<ENTER> Sets to character mode
:DIR^M<ENTER> Sends DOS a directory command
:~H<ENTER> Sets to ASCII HEX mode
:4449520D<ENTER> Sends DOS a directory command
:~S<ENTER> Sets to scan code mode
:32231928<ENTER> Sends DOS a directory command
:~K<ENTER> Sets to key code mode
:23F02343F0432DF02D5AF05A<ENTER>
Sends DOS a directory command
Autoexec Command for Windows (uses boot sense):
:~LR=~Z99~:28~Z30~+56~:63~-56<ENTER>
On boot, waits 99 seconds for boot to finish, sends a
<ENTER> (Win 95 Network logon), waits another 30 seconds,
and sends an Alt-F5. The Alt-F5 would be assigned as a key
shortcut for a desktop application that you wish to run.

KeyAT-4Keyboard Port Adapter
L3 Systems 13 5/19/2007
Scan Codes
Below is the table of Scan definitions.
AT KeyA
TKeyboard AT KeyA TKeyboard
Scan SCAN Scan Scan SCAN Scan
Code Code KEY Codes Code Code KEY Codes
01 01 ESC 76 F0 76 37 37 K42 F0 42
02 02 1 / ! 16 F0 16 38 38 L4B F0 4B
03 03 2 / @ 1E F0 1E 39 39 ; / : 4C F0 4C
04 04 3 / # 26 F0 26 40 40 ' / " 52 F0 52
05 05 4 / $ 25 F0 25 41 41 ` / ~ 0E F0 0E
06 06 5 / % 2E F0 2E 42 42 Left Shift 12 F0 12
07 07 6 / ^ 36 F0 36 43 43 \/ | 5D F0 5D
08 08 7 / & 3D F0 3D 44 44 Z1A F0 1A
09 09 8 / * 3E F0 3E 45 45 X22 F0 22
10 10 9 / ( 46 F0 46 46 46 C21 F0 21
11 11 0 / ) 45 F0 45 47 47 V2A F0 2A
12 12 -/ _ 4E F0 4E 48 48 B32 F0 32
13 13 = / + 55 F0 55 49 49 N31 F0 31
14 14 Backspace 66 F0 66 50 50 M3A F0 3A
15 15 Tab 0D F0 0D 51 51 , / < 41 F0 41
16 16 Q15 F0 15 52 52 . / > 49 F0 49
17 17 W1D F0 1D 53 53 / / ? 4A F0 4A
18 18 E24 F0 24 53 93 /E0 4A E0 F0 4A
19 19 R2D F0 2D 54 54 Right Shift 59 F0 59
20 20 T2C F0 2C 55 55 *7C F0 7C
21 21 Y35 F0 35 55 A4 Prt Scrn E0 12 E0 7C E0
F0 7C E0 F0 12
22 22 U3C F0 3C 56 56 Left Alt 11 F0 11
23 23 I43 F0 43 56 A5 Right Alt E0 11 E0 F0 11
24 24 O44 F0 44 57 57 Space 29 F0 29
25 25 P4D F0 4D 58 58 Caps Lock 58 F0 58
26 26 [ / { 54 F0 54 59 59 F1 05 F0 05
27 27 ] / } 5B F0 5B 60 60 F2 06 F0 06
28 28 Enter 5A F0 5A 61 61 F3 04 F0 04
28 A0 Kpad Enter E0 5A E0 F0
5A 62 62 F4 0C F0 0C
29 29 Left Ctrl 14 F0 14 63 63 F5 03 F0 03
29 A1 Right Ctrl E0 14 E0 F0
14 64 64 F6 0B F0 0B
29+69 A2 PAUSE E1 14 77 E1
F0 14 F0 77
65 65 F7 83 F0 83
30 30 A1C F0 1C 66 66 F8 0A F0 0A
31 31 S1B F0 1B 67 67 F9 01 F0 01
32 32 D23 F0 23 68 68 F10 09 F0 09
33 33 F2B F0 2B 69 69 Num Lock 77 F0 77
34 34 G34 F0 34 70 70 Scr Lock 7E F0 7E
35 35 H33 F0 33 71 71 Home E0 6C E0 F0 6C
36 36 J3B F0 3B 71 A6 Keypad
Home / 7 6C F0 6C

KeyAT-4 Keyboard Port Adapter
5/19/2007 14 L3 Systems
Scan Codes (cont.)
AT KeyA
TKeyboard AT KeyA TKeyboard
Scan SCAN Scan Scan SCAN Scan
Code Code KEY Codes Cod
eCode KEY Codes
72 72 Up
Arrow E0 12 E0 75 E0 F0 75 E0 F0 12 81 B3 Keypad PgDn / 3 7A F0 7A
72 A7 Kpad Up
Arrow /
8
75 F0 75 82 82 Insert E0 70 E0 F0 70
73 73 Page Up E0 7D E0 F0 7D 82 B4 Ins/0 70 F0 70
75 75 Lt Arrow E0 12 E0 6B E0
F0 6B E0 F0 12 83 83 Delete E0 12 E0 71 E0 F0 71 E0 F0 12
75 A9 Kpad
Left
Arrow /
4
6B F0 6B 83 B5 Kpad Del / . 71 F0 71
76 76 573 F0 73 84 Undefined
77 77 Rt Arrow E0 12 E0 74 E0
F0 74 E0 F0 12 85 Undefined
77 B0 Kpad Rt
Arrow /
6
74 F0 74 86 Undefined
78 78 +79 F0 79 87 87 F11 78 F0 78
79 79 End E0 12 E0 69 E0
F0 69 E0 F0 12 88 88 F12 07 F0 07
79 B1 End/1 69 F0 69 89 Undefined
80 80 Down
Arrow E0 12 E0 72 E0 F0 72 E0 F0 12 90 90 Left Window E0 1F E0 F0 1F
80 B2 Kpad Dn
Arrow /
2
72 F0 72 91 91 Right
Window E0 27 E0 F0 27
81 81 Page
Down E0 12 E0 7A E0 F0 7A E0 F0 12 92 92 Menu E0 2F E0 F0 2F

KeyAT-4Keyboard Port Adapter
L3 Systems 15 5/19/2007
ASCII Scan Codes
Below is the table of ASCII scan code definitions.
ASCII ASCII KEYBOARD ASCII ASCII KEYBOARD
CHAR HEX SCAN CODES CHAR HEX SCAN CODES
NUL ^@ 00 14 1E F0 1E F0 14 Space 20 29 F0 29
SOH ^A 01 14 1C F0 1C F0 14 ! 21 12 16 F0 16 F0 12
STX ^B 02 14 32 F0 32 F0 14 " 22 12 52 F0 52 F0 12
ETX ^C 03 14 21 F0 21 F0 14 # 23 12 26 F0 26 F0 12
EOT ^D 04 14 23 F0 23 F0 14 $ 24 12 25 F0 25 F0 12
ENQ ^E 05 14 24 F0 24 F0 14 % 25 12 2E F0 2E F0 12
ACK ^F 06 14 2B F0 2B F0 14 & 26 12 3D F0 3D F0 12
BEL ^G 07 14 34 F0 34 F0 14 ' 27 52 F0 52
BS ^H 08 66 F0 66 ( 28 12 46 F0 46 F0 12
TAB ^I 09 0D F0 0D ) 29 12 45 F0 45 F0 12
LF ^J 0A 14 3B F0 3B F0 14 * 2A 7C F0 7C
VT ^K 0B 14 42 F0 42 F0 14 + 2B 79 F0 79
FF ^L 0C 14 4B F0 4B F0 14 , 2C 41 F0 41
CR ^M 0D 3A F0 3A -2D 7B F0 7B
SO ^N 0E 14 31 F0 31 F0 14 . 2E 49 F0 49
SI ^O 0F 14 44 F0 44 F0 14 / 2F 4A F0 4A
DLE ^P 10 14 4D F0 4D F0 14 0 30 45 F0 45
DC1 ^Q 11 14 15 F0 15 F0 14 1 31 16 F0 16
DC2 ^R 12 14 2D F0 2D F0 14 2 32 1E F0 1E
DC3 ^S 13 14 1B F0 1B F0 14 3 33 26 F0 26
DC4 ^T 14 14 2C F0 2C F0 14 4 34 25 F0 25
NAK ^U 15 14 3C F0 3C F0 14 5 35 2E F0 2E
SYN ^V 16 14 2A F0 2A F0 14 6 36 36 F0 36
ETB ^W 17 14 1D F0 1D F0 14 7 37 3D F0 3D
EM ^X 18 14 22 F0 22 F0 14 8 38 3E F0 3E
SUB ^Y 19 14 35 F0 35 F0 14 9 39 46 F0 46
SUB ^Z 1A 14 1A F0 1A F0 14 : 3A 12 4C F0 4C F0 12
ESC ^[ 1B 76 F0 76 ; 3B 4C F0 4C
FS ^\1C 14 5D F0 5D F0 14 < 3C 12 41 F0 41 F0 12
GS ^] 1D 14 5B F0 5B F0 14 = 3D 12 55 F0 55 F0 12
RS ^^ 1E 14 12 36 F0 36 F0
12 F0 14 > 3E 12 49 F0 49 F0 12
US ^_ 1F 14 12 4E F0 4E F0
12 F0 14 ? 3F 12 4A F0 4A F0 12

KeyAT-4 Keyboard Port Adapter
5/19/2007 16 L3 Systems
ASCII Scan Codes (cont.)
ASCII ASCII KEYBOARD ASCII ASCII KEYBOARD
CHAR HEX SCAN CODES CHAR HEX SCAN CODES
@ 40 12 1E F0 1E F0 12 ` 60 0E F0 0E
A 41 12 1C F0 1C F0 12 a 61 1C F0 1C
B 42 12 32 F0 32 F0 12 b 62 32 F0 32
C 43 12 21 F0 21 F0 12 c 63 21 F0 21
D 44 12 23 F0 23 F0 12 d 64 23 F0 23
E 45 12 24 F0 24 F0 12 e65 24 F0 24
F 46 12 2B F0 2B F0 12 f 66 2B F0 2B
G 47 12 34 F0 34 F0 12 g 67 34 F0 34
H 48 12 33 F0 33 F0 12 h 68 33 F0 33
I 49 12 43 F0 43 F0 12 i 69 43 F0 43
J 4A 12 3B F0 3B F0 12 j 6A 3B F0 3B
K 4B 12 42 F0 42 F0 12 k 6B 42 F0 42
L 4C 12 4B F0 4B F0 12 l 6C 4B F0 4B
M 4D 12 3A F0 3A F0 12 m 6D 3A F0 3A
N 4E 12 31 F0 31 F0 12 n 6E 31 F0 31
O 4F 12 44 F0 44 F0 12 p 70 4D F0 4D
P 50 12 4D F0 4D F0 12 q 71 15 F0 15
Q 51 12 15 F0 15 F0 12 r 72 2D F0 2D
R 52 12 2D F0 2D F0 12 s 73 1B F0 1B
S 53 12 1B F0 1B F0 12 t 74 2C F0 2C
T 54 12 2C F0 2C F0 12 u 75 3C F0 3C
U 55 12 3C F0 3C F0 12 v 76 2A F0 2A
V 56 12 2A F0 2A F0 12 w 77 1D F0 1D
W 57 12 1D F0 1D F0 12 x 78 22 F0 22
X 58 12 22 F0 22 F0 12 y 79 35 F0 35
Y 59 12 35 F0 35 F0 12 z 7A 1A F0 1A
Z 5A 12 1A F0 1A F0 12 { 7B 12 54 F0 54 F0 12
[ 5B 54 F0 54 | 7C 12 5D F0 5D F0 12
\5C 5D F0 5D } 7D 12 5B F0 5B F0 12
] 5D 5B F0 5B ~ 7E 12 0E F0 0E F0 12
^ 5E 12 36 F0 36 F0 12 Del 7F 71 F0 71

KeyAT-4 Keyboard Port Adapter
Warranty: L3 Systems guarantees this product to be free of defects in
material and workmanship for 180 days from date of shipment to the end
user. L3 Systems will repair or replace (at our option) products within the
warranty period at no charge for parts and labor. All returns must obtain a
Return of Merchandise Authorization number (RMA) available on request
from L3 Systems. Shipping costs (plus customs and duty, if any) to and from
L3 Systems must be paid by the user. Damage or defect caused by accident,
misuse or neglect is not covered. Damage or defect caused by shipping is
excluded. L3 Systems shall not be liable for any consequential damage or
losses from the use of, or inability to use its products. Any unauthorized
repair or modification of the product voids the warranty. L3 Systems makes
no other warranty, express or implied, nor have we authorized anyone to
make representations to the contrary.
FCC Class B Approval Information
NOTE:This equipment has been tested and found to comply with the
limits for a class B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation.

KeyAT Keyboard Port Adapter
KeyAT
"To Keyboard"
RS-232
PS/2
"To Computer"
PS/2
The KeyAT Keyboard Port Adapter allows you to make an RS-232
connection to a computer’s keyboard port, and still use the keyboard.
Typical uses are:
♦Testing Software -Test software by sending it simulated
keystrokes from another computer.
♦Remote Access -Use the KeyAT to remotely access systems
where software does not provide other options.
♦Monitor Keyboard Sessions -You can monitor keyboard
session to develop keyboard test scripts.
♦Connect a Keyboard to an RS-232 Port -You can use a
KeyAT to connect a keyboard to a computer's RS-232 port, and
receive key codes from the keyboard.
♦Attaching input devices –Allows you to attach RS-232 devices
to the keyboard port such as bar code readers, scales, and credit
card readers.
Some advanced features of the KeyAT Adapter are:
♦Accepts a Variety of Keyboard Data -Accepts printable
ASCII and encoded ASCII Hex, DOS scan codes, and direct
keyboard key codes.
♦LED Use Indicator -Status of remote connect.
♦Computer Keyboard Port Cable Provided -Just plug it in
and go.