Rockwell Automation Allen-Bradley 1784-KT2/B Installation and user guide

Communication Interface Module
Cat. No. 1784-KT2/B
Installation Data
The 1784-KT2/B Communication Interface Module allows an IBM PS/2
compatible MicroChannel computer to communicate directly with
Allen-Bradley PLC-2 or PLC-3 family programmable controllers. The
1784-KT2/B also allows an IBM PS/2 compatible MicroChannel computer
to communicate over the Allen-Bradley Data Highway Plus network to all
Data Highway Plus family programmable controllers.
WARNING: The following provides information for
Allen-Bradley Industrial Computer and Communication Group
(ICCG) products that have been verified to meet the
Electromagnetic Interference (EMI) requirements of the Federal
Communication Commission (FCC) and the Canadian
Department of Communications for use in a commercial
environment:
This device complies with Part 15 of the FCC rules. Operation
is subject to the following two conditions: (1) this device may
not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause
undesired operation.
WARNING: This digital apparatus does not exceed the Class A
limits for radio noise emissions from digital apparatus set out in
the Radio Interference Regulations of the Canadian Department
of Communications.
Le présent appareil numérique n’émet pas de bruits
radioélectriques dépassant les limites applicables aux appareils
numériques de la class A prescrites dans le Règlement sur le
brouillage radioélectrique édicté par le ministère des
Communications du Canada.
Introducing the 1784KT2/B
Communication Interface
Module

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
2
We will refer to the 1784–KT2/B Communication Interface Module as
simply the 1784–KT2 throughout this document.
This document contains information on the following topics:
Introducing the 1784–KT2/B Communication Interface Module
Important User Information
Features of the 1784-KT2
How the 1784–KT2 Operates
Preparing the IBM PS/2 Reference Diskette for the 1784–KT2
Configuration
Installing the 1784–KT2
Configuring the 1784–KT2
Connecting the 1784–KT2
The 1784–KT2 Diagnostic Program
Diagnostic Program Files
Installing the Diagnostic Program onto a Hard Disk
Starting Up the Diagnostic Program
Running the Diagnostic Program
Diagnostic Program Error Messages
The Diagnostic Program Output File
Building Loopback Connectors
Ordering Information
Specifications
Because of the variety of uses for products described in this publication,
those responsible for the application and use of this control equipment
must satisfy themselves that all necessary steps have been taken to assure
that each application and use meets all performance and safety
requirements, including any applicable laws, regulations, codes and
standards.
The illustrations, charts, sample programs and layout examples shown in
this guide are intended solely for purposes of example. Since there are
many variables and requirements associated with any particular
installation, Allen–Bradley does not assume responsibility or liability (to
include intellectual property liability) for actual use based upon the
examples shown in this publication.
What this Document Contains
Important User Information

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
3
Allen–Bradley publication SGI–1.1, “Safety Guidelines for the
Application, Installation and Maintenance of Solid State Control”
(available from your local Allen–Bradley office) describes some important
differences between solid–state equipment and electromechanical devices
which should be taken into consideration when applying products such as
those described in this publication.
Reproduction of the contents of this copyrighted publication, in whole or
in part, without written permission of Allen–Bradley Company, Inc. is
prohibited.
WARNING: With any complex communication system you
need to identify potential application–related communication
problems and make provisions in the system design to prevent
hazardous or undesired consequences if a problem occurs.
These problems include, but are not necessarily limited to, the
possibility of:
unexpected loss of communication
erroneous or incomplete data being supplied to the network
and passed on to your application
The 1784-KT2 Communication Interface Module is an IBM PS/2
MicroChannel card that you can insert into any 8- or 16-bit IBM PS/2
expansion slot. The 1784-KT2 provides the following features:
makes your PS/2 computer an active node on Data Highway Plus
provides single cable connection to a PLC-2, PLC- 3, or PLC-5 family
programmable controller
operates with 6200 programming software
is address selectable; you can use with other option boards installed in
your PS/2 computer
when combined with Allen-Bradley 6001-F1E2 software, allows you to
create your own custom interface to Data Highway Plus
The 1784-KT2 has been verified for operation with the following
computers:
Allen-Bradley 6123, 6124
IBM PS/2 7541, 7561, 8550, 8555, 8560, 8570, 8580
Features of the 1784KT2
Compatibility

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
4
The 1784-KT2 allows you to communicate with PLC-2s, PLC-3s, and Data
Highway Plus nodes. The 1784-KT2 conducts the data communication,
management, and local Data Highway Plus diagnostics. The interface to
the personal computer is through board-resident shared memory that passes
preformatted Data Highway Plus packets. Upon powering up the computer
and downloading module code, diagnostics are run automatically to verify
the 1784-KT2’s operation. Allen-Bradley’s 6001-F1E2 software manages
the transmission and reception of data through board-resident shared
memory.
To prepare the IBM PS/2 Reference diskette for 1784-KT2 configuration
capability, you must:
create a backup copy of the IBM PS/2 Reference diskette and the
1784-KT2 Options and Diagnostics diskette
copy the 1784-KT2 Adapter Description file to the backup copy of the
IBM PS/2 Reference diskette
create a backup copy of your PS/2 computer’s current configuration
The following sections provide information on the above procedures.
Creating Backup Diskettes
Before installing or configuring your 1784-KT2, make a backup of the
1784-KT2 Options and Diagnostics diskette that was shipped with your
1784-KT2. Follow IBM instructions for completing this process.
Also make a backup of your most recent version of the IBM PS/2
Reference diskette. In this document, we refer to this backup copy as the
“current” IBM PS/2 Reference diskette. Follow IBM instructions for
completing this process.
After you have created the above backup copies, store the original
diskettes.
Copying the 1784-KT2 Adapter Description File
This section provides information on how to copy the 1784-KT2 Adapter
Description file (60C6.ADF) from the backup 1784-KT2 Options and
Diagnostics diskette to the current IBM PS/2 Reference diskette. You
cannot configure the 1784-KT2 until the Adapter Description file is added
to the current IBM PS/2 Reference diskette.
To copy the Adapter Description file, follow the steps below:
1. Insert the current IBM PS/2 Reference diskette into drive A of your
computer.
How the 1784KT2 Operates
Preparing the IBM PS/2
Reference Diskette for 1784KT2
Configuration

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
5
2. Turn on the power switch. The following message appears:
Press [ENTER] to continue.
Press [ENTER].
3. The main menu appears:
MAIN MENU
1. Learn about the computer
2. Backup the Reference Diskette
3. Set configuration
4. Set features
5. Copy an option diskette
6. Move the computer
7. Test the computer
Use or to select. Press Enter.
Escape=Quit F1=Help
Move the cursor down to the Copy an Option Diskette option and
press [ENTER].
4. The following message appears:
Remove your backup copy of the Reference
diskette and insert the options diskette into drive
A.
Insert the 1784-KT2 Options and Diagnostics diskette into drive A and
press [ENTER]. Follow the instructions on your screen.
The above process copies only the 1784-KT2 Adapter Description
file to the current IBM PS/2 Reference diskette. When this copy
procedure is complete, store both diskettes.
Creating a Backup of the PS/2 Computer's Current Configuration
Important: We assume you have prepared your current IBM PS/2
Reference diskette for 1784-KT2 configuration capability. If you have not
yet done so, turn to the section earlier in this document.
To create a backup of the PS/2 computer’s current configuration, follow
the steps below:
1. Insert the current IBM PS/2 Reference diskette into drive A.

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
6
2. Turn on the power switch. The following message appears:
Press [ENTER] to continue.
Press [ENTER].
3. The main menu appears:
MAIN MENU
1. Learn about the computer
2. Backup the Reference Diskette
3. Set configuration
4. Set features
5. Copy an option diskette
6. Move the computer
7. Test the computer
Use or to select. Press Enter.
Escape=Quit F1=Help
Move the cursor down to the Set Configuration option and press
[ENTER].
4. The Set Configuration menu appears:
Set Configuration
1. View configuration
2. Change configuration
3. Backup configuration
4. Restore configuration
5. Run automatic configuration
Press a number to select
Esc=Quit F1=Help
Move the cursor down to the Backup Configuration option and
press [ENTER]. This creates a backup of your PS/2 computer’s
current configuration.
5. When the procedure is complete, press [ENTER] to return to the Set
Configuration menu.

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Communication Interface Module
Cat. No. 1784-KT2/B
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6. Press [ESC] to quit.
7. Remove the current IBM PS/2 Reference diskette from drive A and
re-start the PS/2 computer.
This section provides information on installing the 1784-KT2 into an
Allen-Bradley 6123, an Allen-Bradley 6124, or an IBM PS/2 computer.
When installing the 1784-KT2 into a 6123 or 6124, refer to the 6123/6124
User’s Manual (publication 6123-2.1).
Important: Read the IBM PS/2 Model Quick Reference guide before you
install the 1784-KT2. Pay close attention to the section entitled “Installing
Options.”
CAUTION: The 1784-KT2 utilizes CMOS Technology
, which is
highly sensitive to electrostatic dischar ge (ESD). ESD may be present
whenever you are handling the 1784-KT2. Handling the 1784-KT2
without any ESD protection can cause internal circuit damage that may
not be apparent during installation or initial use. A grounding wrist
strap has been shipped with the 1784-KT2 to be worn during the
installation procedure. Instructions for use of the strap are found on the
back of its package.
The following is a list of precautions to guard against ESD damage:
Before handling the module, be sure to wear the provided static strap
and touch a grounded object to discharge any built-up static charge.
Avoid touching the backplane connector or interface connector pins
located on the 1784-KT2.
If the module is not in use, store the 1784-KT2 in the static bag that the
module was shipped in.
To install the 1784-KT2, follow the steps below:
1. Disconnect the ac power to the computer.
2. Remove the computer’s system-unit cover (according to the
manufacturer’s instructions).
3. Select a vacant 8- or 16-bit expansion slot.
Important: The 1784-KT2 will function in an 8- or a 16-bit
expansion slot only.
4. Remove the rear bracket-slot’s expansion cover by loosening the
screw on the back of the computer.
Installing the 1784KT2

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
8
5. Insert the 1784-KT2 into the edge connector and tighten the
expansion slot screw.
6. Replace the system-unit cover.
7. Connect the ac power to the computer.
You are now ready to configure your 1784-KT2.
Important: We assume you have already made a backup of your IBM
PS/2 Reference diskette and prepared it for 1784-KT2 configuration
capability. If you have not yet done so, refer to the section earlier in this
document.
In the following, [ENTER] indicates when you must press the enter key.
To configure the 1784-KT2, follow the steps below:
1. Insert the current IBM PS/2 Reference diskette into drive A.
2. Turn on the computer.
3. During the boot process, the computer beeps twice and error code 165
appears on the screen. This indicates an adapter configuration
change. The following message appears:
Press Enter to continue
Press [ENTER].
4. You are asked the following:
Automatically configure the system? (Y/N)
Type:
n [ENTER].
5. When the main menu appears, move the cursor down to the Set
Configuration option and press [ENTER].
6. When the Set Configuration menu appears, move the cursor down to
the Change Configuration option and press [ENTER]. A
configuration table with the following type of information appears
(variation is probable):
Configuring the 1784KT2

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
9
Total System Memory
Installed Memory ..............2048KB (2.0MB)
Useable Memory ..............2048KB (2.0MB)
BuiltIn Features
Installed Memory ..............2048KB (2.0MB)
Diskette Drive A T ype......1.44MB [3.5"]
Diskette Drive B T ype.......[Not Installed]
Math Coprocessor .............[Not Installed]
Serial Port..........................[Serial_1]
Parallel Port.......................[Parallel_1]
Slot 1AllenBradley Company 1784KT2
Memory Address...............[0C0000h0C3FFFh]
Interrupt Level....................[IRQ9]
Auxiliary Communication
Port.........................[PLC2/3 Direct Connect]
Esc=Quit F5=Previous F10=Save Home Page up
F1=Help F6=Next End Page Down
Change Configuration
7. Select a memory address by moving the cursor down to the
1784-KT2 Memory Address option. The 1784-KT2 supports the
following memory addresses (in hexadecimal):
0C0000 - 0C3FFF
0C4000 - 0C7FFF
0C8000 - 0CBFFF
0CC000 - 0CFFFF
0D0000 - 0D3FFF
0D4000 - 0D7FFF
0D8000 - 0DBFFF
0DC000 - 0DFFFF
Use [F5] and [F6] to scroll back and forth through the addresses.
Display your selection on the screen. Make sure you select an
address that is not being used by another adapter card in your PS/2
computer. If you select an address currently in use, an asterisk will
appear next it.

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
10
CAUTION: Configuring two adapter cards at the same address
may damage your cards and your PS/2 computer.
8. Set the interrupt level by moving the cursor down to the Interrupt
Level option. The 1784-KT2 supports the following interrupts:
- IRQ9
- IRQ10
- IRQ11
- IRQ12
Use [F5] and [F6] to scroll back and forth through the interrupts.
Display your selection on the screen. Make sure you select an
interrupt that is not being used by another adapter card in your PS/2
computer.
9. Set the auxiliary communication port by moving the cursor down to
the Auxiliary Communication Port option. This port, one of the
two communication ports available through a single 1784-KT2
connector, is used for communication with a PLC-2 or PLC-3
connected to the 1784-KT2.
The other communication port, the main port, is used for Data
Highway Plus communication when the 1784-KT2 is connected to
the Data Highway Plus network. You do not need to configure the
main port.
The 1784-KT2 supports the following auxiliary port options:
PLC-2/3 Direct Connect Reserved (for future 1784-KT2 auxiliary
port usage)
Use [F5] and [F6] to display “PLC-2/-3 Direct Connect” on your
screen.
10. Press [F10] to save the memory, interrupt, and auxiliary
communication port options.
11. You are asked if you want to continue. Press [ENTER].
12. Press [ESC] to return to the Set Configuration menu.
13. Press [ESC] again. A message indicating a configuration change has
been made appears on your screen. Remove the current IBM PS/2
Reference diskette.
14. Press [ENTER] to restart the computer.

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
11
Important: Make sure you have the software that supports connecting the
1784-KT2 to your programmable controller. If you are not sure your
software supports this connection, contact your local Allen-Bradley sales
office
The following sections provide directions for connecting a 1784-KT2 to a
PLC-2, PLC-3, or PLC-5. Refer to Table 1 for the catalog numbers of the
cables you need to use and the corresponding PLCs.
Table 1
Required
Cables for Connecting to a Programmable Controller
Use this cable: When connecting to:
1784CP2 PLC2 Family Programmable Controllers
1784CP3 PLC3 Family Programmable Controllers
1784CP PLC5 Family Programmable Controllers
1784CP6 PLC5/40 and PLC5/60 Programmable Controllers (refer to
publication 17842.26)
1784CP7 Adapter
with 1784CP Cable
PLC5/40 and PLC5/60 Programmable Controllers (refer to
publication 17842.29)
Connecting the 1784-KT2 to a PLC-2
To connect the 1784-KT2 to a PLC-2, follow the steps below:
WARNING: To avoid personal injury, always disconnect the ac
power before making the cable connection.
1. Plug the 62-pin connector end of the 1784-CP2 cable into the
1784-KT2 and secure with captive screws.
1784 - KT2
Board
"Program
Panel"
1784 - CP2 Cable 18341a
2. Connect the other end of the 1784-CP2 cable into the PROGRAM
PANEL connector on the PLC-2.
3. Reinstall the ac power cord and turn on the computer.
Connecting the 1784KT2

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
12
Figure 1 shows cable pinouts for the 1784-CP2 cable.
Figure 1
Cable
Pinouts for the 1784CP2 Cable
4
5
6
48
7
27
26
1
2
3
4
7
8
A2 TXD
A2 TXD RET
A2 OUT0 RET
A2 OUT0
A2 RXD RET
A2 IN0 DET
A2 RXD
47
6
5
A2 IN0
Cable shield
tied to chassis
62 pin
D - shell
To "Program
Panel"
16688
Connecting the 1784-KT2 to a PLC-3
To connect the 1784-KT2 to a PLC-3, follow the steps below:
WARNING: To avoid personal injury, always disconnect the ac
power before making the cable connection.
1. Plug the 62-pin connector end of the 1784-CP3 cable into the
1784-KT2 and secure with captive screws.
1784 - KT2
Board
"Peripheral
Channel 0"
1784 - CP3 Cable 18341b
2. Connect the other end of the 1784-CP3 cable (labeled “Industrial
Terminal End”) into the PERIPHERAL CHANNEL 0 connector on
the PLC-3.
3. Reinstall the ac power cord and turn on the computer.

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
13
Figure 2 shows cable pinouts for the 1784-CP3 cable.
Figure 2
Cable
Pinouts for the 1784CP3 Cable
1
2
12
24
3
22
17
14
3
18
A1 TXD
A1TXD RET
A1 IN0
Chassis Gnd
A1 RXD
A1 IN1
Signal Gnd
23
25
A1 TXD RET
62 pin
D - shell
46
43
25
44
A1 OUT0
A1 OUT1
A1 IN2
16689
1
Connecting the 1784-KT2 to a PLC-5
To connect the 1784-KT2 to a PLC-5, follow the steps below:
WARNING: To avoid personal injury, always disconnect the ac
power before making the cable connection.
1. Plug the 62-pin connector end of the 1784-CP cable into the
1784-KT2 and secure with captive screws.
1784 - KT2
Board
Peer Communication
Interface Connector
1784 - CP Cable
PLC - 5 Family Processor
18341c

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
14
2. Connect the other end of the 1784-CP cable into the PEER COMM
INTFC connector on the PLC-5.
3. Reinstall the ac power cord and turn on the computer.
Important: To allow communication between PLC-5s and other Data
Highway Plus nodes, you must connect your PS/2 to a PLC-5 using a
1784-CP cable. The Data Highway Plus network is connected to the
PLC-5.
Figure 3 shows cable pinouts for the 1784-CP cable.
Figure 3
Cable
Pinouts for the 1784CP Cable
36
34
1
2
3
4
Shield
L1
35
5
L2
6
7
8
To Peer
Communication
Interface
White
Blue
14732
The 1784-KT2 Diagnostic Program allows you to execute a set of tests to
help you make sure the 1784-KT2 is functioning properly. These tests
check various operational characteristics, such as network and host
communications, interrupts, and memory access. Test results are displayed
on your screen and recorded in the diagnostic program output file.
Important: If the 1784-KT2 does not function properly under normal
operation, follow the steps below:
1. Check the configuration settings (refer to the section entitled
“Configuring the 1784-KT2”). You may have configured the
1784-KT2 at an address already in use by another adapter module.
2. If the 1784-KT2 continues to function improperly, run the 1784-KT2
Diagnostic Program to determine if there are any hardware failures.
If hardware failures are indicated, refer to the output file for resulting
error messages. (Refer to the sections entitled “The Diagnostic
Program Output File” and “Diagnostic Program Error Messages” for
additional information.)
3. If, after following steps 1 and 2, the 1784-KT2 continues to function
improperly, contact your local Allen-Bradley sales office.
The 1784KT2
Diagnostic Program

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
15
To properly execute the diagnostic program, you must have the following:
an IBM PS/2 7541, 7561, 8550, 8555, 8560, 8570, or 8580 computer
with the 1784-KT2 installed
OR
an Allen-Bradley 6123 or 6124 computer with the 1784-KT2 installed
DOS V3.3 or greater
a PLC-2 or PLC-3 loopback connector (required for Off-Line
Communications Diagnostics tests)
For information on how to build the loopback connector, refer to section
entitled “Building Loopback Connectors”.
Below is a list of the diagnostic program files that you can find on the
Options and Diagnostics diskette:
KT2DIAG.EXE
KT2MSG.TXT
KT2DLG.TXT
@60C6.ADF
KT<DIR>
The following files are located in the KT sub-directory:
KT2ST0.BIN
KT2ST1.BIN
KT2ST2.BIN
KT2INT.BIN
KT2PLC2.BIN
KT2PLC3.BIN
KT2DHP.BIN
Important: If you have not already done so, create a backup copy of the
Options and Diagnostics diskette according to IBM instructions.
In the following example, the hard disk is referred to as C: . You are not
required to install the diagnostic program onto a hard disk. Also,
[ENTER] indicates when you must press the enter key.
To install the diagnostic program onto a hard disk, follow the steps below:
1. Turn on the computer.
2. When the prompt appears, type the following to select the hard disk:
c: [ENTER]
Diagnostic Program Files
Installing the Diagnostic
Program onto a Hard Disk

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
16
3. When the prompt appears, type the following to select the top
directory of the hard disk:
cd c:\ [ENTER]
4. When the prompt appears, type the following to create a directory
called KT:
mkdir kt [ENTER]
5. When the prompt appears, type the following to create a directory
called KT2DIAG:
mkdir kt2diag [ENTER]
6. When the prompt appears, insert the backup copy of the Options and
Diagnostics diskette into drive A: .
7. Type the following to copy the Z80 diagnostic files to the KT
directory:
copy a:\kt\*.* c:\kt [ENTER]
8. When the prompt appears, type the following to copy the diagnostic
program files to the KT2 directory:
copy a:\*.* c:\kt2diag [ENTER]
The diagnostic program now resides in the C:\KT2DIAG directory, and the
files the diagnostic program depends on now reside in the C:\KT directory.
Read the following checklist to help avoid damage to your network before
starting up the diagnostic program:
Make sure your network or PLC is not connected to a 1784-KT2 while
the diagnostic program is running.
Make sure other programs are not running at the same time the
diagnostic program is running.
Do not run the diagnostic program in a windowing or multi-tasking
environment. The diagnostic program does not support these
environments.
Make sure there are no terminate-stay-resident (TSR) software
programs loaded in your PS/2 before you run the diagnostic program.
Starting Up the
Diagnostic Program

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
17
The following sections describe how to start the diagnostic program from
the:
backup copy of the Options and Diagnostics diskette
OR
hard disk
You are not required to start the diagnostic program from both the backup
copy of the Options and Diagnostics diskette and the hard disk.
If you plan to start the diagnostic program from the hard disk, turn to the
section ‘‘Starting Up from a Hard Disk” later in this document.
In the following sections, [ENTER] indicates when you must press the
enter key.
Starting Up from the Options and Diagnostics Diskette
Important: Before starting the diagnostic program from the backup copy
of the Options and Diagnostics diskette, read the following:
Do not remove the backup copy of the Options and Diagnostics diskette
while the diagnostic program is running. The diagnostic program
cannot write test results to the output file if the diskette is not in the
floppy drive.
Make sure the write protection switch on the Options and Diagnostics
diskette is off when the diagnostic program is running. The diagnostic
program cannot write test results to the output file if the write protection
switch is on.
Always exit the diagnostic program through the “exit” menu to avoid
losing the output file.
To start the diagnostic program from the backup copy of the Options and
Diagnostics diskette, follow the steps below:
1. Turn on your computer.
2. When the prompt appears, insert the backup copy of the Options and
Diagnostics diskette.
3. Select the directory containing the diagnostic program by typing:
a: [ENTER]
When the prompt appears, type:
cd a:\ [ENTER]

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Communication Interface Module
Cat. No. 1784-KT2/B
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Important: The diagnostic program adds new test results to results
already existing in the output file. If you want to delete test results already
existing in the output file, wait for the prompt to appear and type:
del kt2out.txt [ENTER]
Do this before you proceed to step 4.
4. When the prompt appears, type the following:
kt2diag [ENTER]
You see the following message:
WARNING: Serious damage will occur if 1784-KT2 is
connected to a network. Press any key to acknowledge:
Make sure the 1784-KT2 is not connected to your network and
press any key to continue.
5. Again you are asked if you want to continue. If you have followed
the precautions to guard against network damage explained earlier in
this section, type y. If you have not yet read this information, type n
to exit the diagnostic program. You must read this information
before going any further.
6. An Allen-Bradley copyright message appears on the screen. Press
any key to continue.
The Allen-Bradley 1784-KT2 Diagnostic Program menu appears on your
screen. You are now ready to run the diagnostic program as explained later
in this document.
Starting Up from a Hard Disk
Important: We assume you have installed the diagnostic program onto
the hard disk. If you have not done so, refer to the section earlier in this
document.
In the following example, the hard disk is referred to as C: .
To start the diagnostic program from a hard disk, follow the steps below:
1. Turn on the computer.

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
19
2. Select the directory containing the diagnostic program by typing:
c: [ENTER]
When the prompt appears, type:
cd c:\kt2diag [ENTER]
Important: The diagnostic program adds new test results to results
already existing in the output file. If you want to delete test results already
existing in the output file, wait for the prompt to appear and type:
del kt2out.txt [ENTER]
Do this before you proceed to step 3.
3. When the prompt appears, type:
kt2diag [ENTER]
You see the following message:
WARNING: Serious damage will occur if 1784-KT2 is
connected to a network. Press any key to acknowledge:
Make sure your 1784-KT2 is not connected to your network and
press any key to continue.
4. Again you are asked if you want to continue. If you have followed
the precautions to guard against network damage explained earlier in
this section, type y. If you have not yet read this information, type n
to exit the diagnostic program. You must read this information
before going any further.
5. An Allen-Bradley copyright message appears on your screen. Press
any key to continue.
The Allen-Bradley 1784-KT2 Diagnostic Program menu appears on your
screen. You are now ready to run the diagnostic program.

Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
20
When you have completed the start-up procedures, the following screen
appears:
Host . . .
Card . . .
Offline Communications . . .
All Components . . .
F3  Select Module
AllenBradley 1784KT2 Diagnostic Program Version 1.0
Diagnose Exit
You must now specify which 1784-KT2 module you want to test. To do
this, follow the steps below:
1. Press [F3]. The number of each slot containing a 1784-KT2 is
displayed.
2. Specify the slot number of the 1784-KT2 you want to test by moving
the cursor to the desired slot number and pressing [ENTER]. You can
press [F3] to select a new module whenever [F3] appears on the
screen.
The following sections describe each of the above diagnostic options.
The Host Diagnostics Test
The Host Diagnostics option allows you to test for proper communication
between the PS/2 computer and the 1784-KT2. To perform this test,
follow the steps below:
1. Place your cursor on the Host option and press [ENTER].
Running the Diagnostic Program