Allen-Bradley 1784-KT2/C Installation and user guide

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
Communication Interface Module
Cat. No. 1784–KT2/C
Installation Data
The 1784–KT2/C Communication Interface Module allows you to use an
IBM PS/2 compatible MicroChannel computer to communicate with:
Allen-Bradley PLC–2 and PLC–3 family programmable controllers
all Data Highway Plus family programmable controllers
The 1784–KT2/C 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/C’s operation. Allen-Bradley 6001–F1E2 software manages
the transmission and reception of data through board-resident shared
memory.
Features
The 1784–KT2/C Communication Interface Module is an IBM PS/2R
MicroChannel card that you can insert into any 8– or 16–bit IBM PS/2
expansion slot. In addition, the 1784–KT2/C:
makes your PS/2 computer an active node on a Data Highway Plus
network
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 it 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 a Data Highway Plus network
About the 1784-KT2/C
Communication Interface
Module

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
2
Compatibility
The 1784–KT2/C has been verified for operation with the following
computers:
Allen-Bradley 6123, 6124
IBM PS/2 7541, 7561, 8550, 8555, 8560, 8570, 8580
We will refer to the 1784–KT2/C Communication Interface Module as
simply the 1784–KT2 throughout this document.
The remainder of this document contains information on the following
topics:
For Information on: Refer to page:
Important User Information 2
Preparing the Reference Diskette for Configuration 4
Installing the 1784-KT2 7
Configuring the 1784-KT2 8
Connecting the 1784-KT2 10
The 1784-KT2 Diagnostic Program 14
Building Loopback Connectors 29
Specifications 31
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

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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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
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.

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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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 parleministère des
Communications du Canada.
Preparing the IBM PS/2 Reference diskette for 1784–KT2 configuration
capability, involves:
creating backup diskettes
copying the 1784–KT2 Adapter Description file
creating a backup of the PS/2 configuration
The following sections provide information on these procedures.
Creating Backup Diskettes
Before installing or configuring your 1784–KT2 you need to make backup
copies of the following:
1784–KT2 Options and Diagnostics diskette
Most recent version of the IBM PS/2 Reference diskette
Follow IBM instructions for completing this process.
Important: After you have created the backup copies, store the original
diskettes. All procedures from this point on will be performed using the
backup diskettes.
Copying the 1784-KT2 Adapter Description File
This section explains how to copy the 1784–KT2 Adapter Description file
(60C6. ADF) from the 1784–KT2 Options and Diagnostics diskette to the
IBM PS/2 Reference diskette. You cannot configure the 1784–KT2 until
the Adapter Description file is added to the IBM PS/2 Reference diskette.
To copy the Adapter Description file, follow these steps:
1. Insert the IBM PS/2 Reference diskette into drive A of your
computer.
Preparing the Reference
Diskette for Configuration

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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2. Press the [Control], [Alt] and [Del] keys at the same time.
3. When you receive the following message, press [ENTER].
Press
[ENTER) to continue.
4. 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].
5. When the following message appears, insert the 1784–KT2 Options
and Diagnostic diskette into drive A and press [ENTER]:
Remove
your backup copy of the Reference
diskette and insert the options diskette into
drive A.
6. Follow the instructions on your screen.
This process copies only the 1784–KT2 Adapter Description file to
the IBM PS/2 Reference diskette. When this copy procedure is
complete, store both diskettes.
Creating a Backup of the PS/2 Configuration
Important: You need to copy the Adapter Description file to the IBM
PS/2 Reference diskette before you perform this procedure. If you have not
yet done so, turn to the previous section for instructions.
To create a backup of the PS/2 computer’s configuration, follow these
steps:
1. Insert the IBM PS/2 Reference diskette into drive A.

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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2. Cycle the power switch. When the following message appears, press
[ENTER]:
Press
[ENTER) to continue.
3. When the main menu appears move the cursor down to the Set
Configuration option and press [ENTER].
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
4. When the Set Configuration menu appears move the cursor down to
the Backup Configuration option and press [ENTER].
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
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.
6. Press [ESC] to quit.
7. Remove the IBM PS/2 Reference diskette from drive A and re-start
the PS/2 computer.

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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This section explains how to install the 1784–KT2 into an Allen-Bradley
6123 or 6124, or an IBM PS/2 computer. When installing the module into a
6123 or 6124, refer to the 6123/6124 User’s Manual (publication
6123–2.1) for additional considerations.
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” for additional considerations when installing the
1784–KT2.
CAUTION: The 1784–KT2 uses CMOS Technology, which is
highly sensitive to electrostatic discharge (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 the1784–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 these steps:
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.
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.
Installing the 1784-KT2

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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You are now ready to configure your 1784–KT2. Refer to the next section.
Important: You need to prepare the PS/2 Reference diskette for
1784–KT2 configuration capability. If you have not yet done so, refer to
the section earlier in this document.
To configure the 1784–KT2, follow these steps:
1. Insert the 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.
When the following message appears, press [ENTER]
Press
Enter to continue
4. When you receive the following message, type n and press [ENTER].
Automatically configure the system? (Y/N)
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

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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Change Configuration
Total System Memory
Installed Memory 2048KB (2.0MB). .
Useable Memory 2048KB (2.0MB). .
BuiltIn Features
Installed Memory 2048KB (2.0MB). .
Diskette Drive A Type 1.44MB [3.5"]. . . . . .
Diskette Drive B Type [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
7. Select a memory address by moving the cursor down to the1784–KT2
Memory Address option.
CAUTION: Configuring two adapter cards at the same address
may damage your cards and your PS/2 computer.
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.
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

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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8. Set the interrupt level by moving the cursor down to the Interrupt
Level option.
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.
The 1784–KT2 supports the following interrupts:
IRQ9
IRQ10
IRQ11
IRQ12
If you are using a PLC–2 or PLC–3, continue with Step 9.
If you are not using a PLC–2 or PLC–3, continue with Step 10.
9. Use [F5] and [F6] to set the auxiliary communication port to
PLC–2/3 Direct Connect.
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 IBM PS/2 Reference
diskette.
14. Press [ENTER] to restart the computer.
Important: Make sure you have the software that supports connecting
the1784–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 1for the catalog numbers of the
cables you need to use and the corresponding PLCs.
Connecting the 1784-KT2

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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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 these steps:
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
the1784–KT2 and secure with captive screws.
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.
Figure 1shows cable pinouts for the 1784–CP2 cable.

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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Figure 1
Cable Pinouts for the 1784- CP2 Cable
Connecting the 1784-KT2 to a PLC-3
To connect the 1784–KT2 to a PLC–3, follow these steps:
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.
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.
Figure 2shows cable pinouts for the 1784–CP3 cable.

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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Figure 2
Cable Pinouts for the 1784-CP3 Cable
Connecting the 1784-KT2 to a PLC-5
To connect the 1784–KT2 to a PLC–5, follow these steps:
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.
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.

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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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
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 these steps:
1. Check the configuration settings (refer to the section entitled
“Configuring the 1784–KT2”). You may have configured
the1784–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 “Output File” and
“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

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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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”.
Diagnostic Program Files
Listed below are the diagnostic program files that you can find on the
Options and Diagnostics diskette:
KT2DIAG.EXE
KT2DLG.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
Installing the Diagnostic Program onto a Hard Disk
Important: If you have not already done so, create a backup copy of the
Options and Diagnostics diskette according to IBM instructions.
Important: You are not required to install the diagnostic program onto a
hard disk. However, if you choose to install the program onto the hard
disk, follow this procedure.
In the following example, the hard disk is referred to as C:.
To install the diagnostic program onto a hard disk, follow these steps:
1. Turn on the computer.

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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2. When the prompt appears, type the following to select the hard disk:
c:
[ENTER]
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.
Starting up the Diagnostic Program
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.

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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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.
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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Installation Data
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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.
2. Select the directory containing the diagnostic program by typing:
c:
[ENTER]

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Installation Data
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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.

Communication Interface Module
Cat. No. 1784-KT2/C
Installation Data
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Running the Diagnostic Program
When you have completed the start–up procedures, the following screen
appears:
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.