Black Box CMA005A User manual

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax [phone]
©Copyright 1992. Black Box Corporation. All rights reserved.

CUSTOMER
SUPPORT
INFORMATION
APRIL 1992
CMA005A
CMA005C
User Programmable CAP
USER PROGRAMMABLE CAP
TXA RXA TXB RXB PWR
RESET
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FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]

USER PROGRAMMABLE CAP
1
FEDERAL COMMUNICATIONS COMMISSION
RADIO FREQUENCY INTERFERENCE STATEMENT
This equipment generates, uses, and can radiate radio frequency energy and if not installed and used
properly, that is, in strict accordance with the manufacturer's instructions, may cause interference to radio
communication. It has been tested and found to comply with the limits for a Class A computing device in
accordance with the specifications in Subpart J of Part 15 of FCC Rules, which are designed to provide
reasonable protection against such interference when the equipment is operated in a commercial
environment. Operation of this equipment in a residential area is likely to cause interference, in which case
the user at his own expense will be required to take whatever measures may be required to correct the
interference.
TRADEMARKS
AT®is a registered trademark of International Business Machines Corporation.
Any other trademarks mentioned in this manual are acknowledged to be the property of the trademarks
owners.

USER PROGRAMMABLE CAP
2
CONTENTS
1.0 SPECIFICATIONS.....................................................................................................................................3
2.0 INTRODUCTION.....................................................................................................................................4
2.1 Possible Conversions ......................................................................................................................4
2.2 User Programmable CAP Features................................................................................................5
2.2.1 Programming Mode ..........................................................................................................5
2.2.2 Pass-Thru Mode .................................................................................................................5
2.2.3 Upload User Programmable Capability ...........................................................................5
2.2.4 Download User Programmable Capability ......................................................................5
2.2.5 Partial Match Timeout ......................................................................................................5
2.2.6 Control Field in Substitute String ....................................................................................5
3.0 INSTALLATION ......................................................................................................................................6
3.1 Installation Checklist......................................................................................................................6
3.2 Installing the User Programmable CAP........................................................................................7
3.2.1 AC Power............................................................................................................................7
3.2.2 Cable Requirements..........................................................................................................7
3.3 DIP Switch Settings.........................................................................................................................8
3.4 Setting the Mark and Space Parity ..............................................................................................10
3.5 User Programmable CAP to Device Connection .......................................................................14
3.6 Rackmount Application ...............................................................................................................14
4.0 OPERATION 15
4.1 Entering and Exiting the Programming Mode ..........................................................................15
4.2 Programming Menu.....................................................................................................................15
4.3 Translation Equation Entry..........................................................................................................16
4.3.1 Direction of Translation..................................................................................................16
4.3.2 Entering Match and Substitution Strings.......................................................................16
4.3.3 Entering Function Codes................................................................................................17
5.0 TROUBLESHOOTING ..........................................................................................................................18
5.1 Diagnostic LEDs ...........................................................................................................................18
5.2 Cables and Configuration............................................................................................................18
6.0 CODE-SET CONVERSION TABLES .....................................................................................................19
6.1 Lower-Case Letters .......................................................................................................................19
6.2 Upper-Case Letters.......................................................................................................................20
6.3 Numbers........................................................................................................................................20
6.4 Special Printable Characters........................................................................................................21
6.5 Control Codes...............................................................................................................................22
6.6 Ticker Tape ...................................................................................................................................23
APPENDIX: OPTIONAL CABLES...............................................................................................................25

CHAPTER 1: Specifications
3
Protocol — Asynchronous only
Speed — 45.5 bps to 38.4 Kbps
Flow Control — Hardware, X-ON/X-OFF, ENQ/ACK
Indicators — RXD and TXD for Ports A and B; Power
Interface — RS-232/CCITT V.24 configured as DTE
Connectors — (2) DB9 female
Processor — Z-80 CPU
Memory — 32K RAM
Translations — Maximum memory available for translations is 8K. 256 bytes or
less for each match string or substitution string. Formula: MEMORY USAGE =
TOTAL LENGTH OF ALL MATCH AND SUBSTITUTION STRINGS + 10
BYTES OVERHEAD PER TRANSLATION. EXAMPLE: CONVERT 10 16-
CHARACTER STRINGS TO 4-CHARACTER STRINGS 10*16 + 10*4 + 10*10
(OVERHEAD) = 300 BYTES
Controls — Reset
Environment — Operating Temperature: 32° to 113° F (0° to 45° C)
Storage Temperature: -44° to 158° F (-20° to 70° C)
Humidity: 0 to 95% noncondensing
MTBF — 58,000 hours for a ground-benign environment
Enclosure — High-impact plastic
Power — 115 VAC, 50-60 Hz, 95 mA, 11 watts or 230 VAC, 50-60 Hz, 48 mA, 11 watts
Size — 1.8"H x 5.5"W x 8.5"D (4.6 x 14.0 x 21.6 cm)
Weight — 2 lb. (0.9 kg)
Card Rack Specifications
Size — 5.2"H x 19"W x 9.3"D (13.2 x 48.3 x 23.6 cm)
Weight — 9.5 lb. (4.3 kg), without cards
Rack Power
Supply Specs — Primary: 115 VAC/60 Hz model or 230 VAC/50 Hz model
Output: 16 volts center-tap AC, 3.125 amps
Card Capacity — Rack holds up to 12 Cards.
1.0 Specifications

USER PROGRAMMABLE CAP
4
The User Programmable CAP lets two incompatible
devices that use RS-232 interfaces communicate
with each other. The unit is programmed for your
application through internal DIP switches and
jumpers. The unit's 32K of RAM can be allocated in
different amounts for each port.
Below is a list of optional equipment you can use to
integrate the unit into your application. See
Appendix A for the pinouts of the listed cables.
• Card Rack
• Power Supply
• Cables:
CAP-to DTE Cable
CAP-to-Modem Cable
CAP to AT®Cable
Straight 9-Pin Cable
CAP-to-PC Cable
2.1 Possible Conversions
The User Programmable CAP can convert between
two devices for any of the following parameters:
•Word Structure — Defines the structure of the
asynchronous characters transmitted and
received over the RS-232C interface. The User
Programmable CAP's communication ports can
be set individually for your devices' word
structure.
Word Structure Options:
a) 5, 6, 7, or 8 Data Bits
b) Even, Odd, Mark, Space, or No Parity Bit
c) 1, 1.5, or 2 Stop Bits
•Buffer Flow Control — The Programmable CAP
provides the protocol for stopping and starting
data transfer between two devices.
Buffer Flow Control Options:
1. Hardware Flow Control — A pin of the
RS-232 interface in used for buffer flow
control. If the pin being monitored by the
sending device is +12 V, the device can
transmit data. If the pin is -12 V, the device
cannot transmit data. A device attached to
the User Programmable CAP is asked to
stop transmitting when only 256 bytes of
unused space remain in the buffer. The
unit permits the device to transmit again
when only 256 bytes of information
remain in the buffer. The unit is DTE; it
sources DTR and monitors CTS.
2. ENQ/ACK Flow Control — Some devices
request permission to transmit a block of
asynchronous data by sending an "ENQ"
control code (05H). The device transmits
the block only if it receives an "ACK"
control code (06H) in response. A block
may be anywhere from 1 to 256 bytes. If a
larger block size is required, you will have
to do custom programming.
NOTE
The User Programmable CAP will not
initiate ENQ for ENQ/ACK protocol; it
only responds with ACK to an ENQ. In
some applications, custom firmware
can be configured to have the User
Programmable CAP initiate ENQ.
3. X-ON/X-OFF Flow Control — The
sending device is allowed to transmit data
until it receives an "X-OFF" control
character (13H). After it receives this
character, it must wait until it receives an
"X-ON" control character (11H) before it
can transmit again. The device attached
to the Programmable CAP is asked to
stop transmitting when only 256 bytes of
unused space remains in the buffer. The
Programmable CAP permits the device to
transmit again when the buffer is emptied
to a point where only 256 bytes of
information remain.
4. No Flow Control — For those situations in
which a device uses no flow control, the
Programmable CAP can be configured to
always receive and transmit data without
any protocol.
•Baud Rate — A unit of signaling speed equal to
the number of signal events per second. The
Programmable CAP 's communication port's
baud rate must be set to match that of the
2.0 Introduction

CHAPTER 2: Introduction
5
device attached to that port.
Common rates between 45.5 and 38,400 bps are
available. See the baud rate chart (Table 3-4) for
specific rates available. Some other baud rates
between 18.75 and 38,400 are available with
custom programming.
•Code Set — Rules that specify the way sets of
characters (also called codes) are represented
internally to a computer. The User Program-
mable CAP can conform to almost any device's
data code.
User Programmable CAP Data Code Options:
a) ASCII
b) EBCDIC
c) TRANSCODE
d) BAUDOT
e) TICKER TAPE
f) OTHER — The User Programmable CAP
can pass data in any code set without
conversion if both ports are set up for
"OTHER."
•Transmission Mode — This is the protocol
defining how information is transmitted over
the RS-232C interface.
The User Programmable CAP's Transmission
Mode Options are:
a) Full-Duplex — Transmission occurs in
both directions simultaneously.
b) Half-Duplex — Transmission occurs in
either direction, but not simultaneously.
c) Simplex — Transmission occurs in one
direction only.
2.2 User Programmable CAP Features
You can program the User Programmable CAP to
convert single or multiple character sequences to
other single or multiple character sequences. This
unit is an inline buffer box with two modes of
operation: programming mode and pass-thru
mode.
2.2.1 PROGRAMMING MODE
In Programming Mode, you can enter and update
translation equations and any other parameters
used in the translation process. Translation
equations consist of two parts, the match string and
the substitute string. Each of these strings can be up
to 256 characters long. These translation equations
are stored in a nonvolatile memory which retains
information all the time, even during power loss.
Maximum memory available for the translations in
8K. You can enter programming mode either by
toggling a DIP switch or by entering a user-defined
software string.
2.2.2 PASS-THRU MODE
In Pass-Thru Mode, the unit buffers data received
from each port and translates any character
sequences as defined in the translation equations.
Then it retransmits this data out of the other port,
using the configured word structure, baud rate, and
flow control of the port. A character sequence is
passed through transparently unless it corresponds
to a match string in one of the translation
equations. If a match occurs, the character
sequence is replaced by the substitute string of
the corresponding translation equation.
2.2.3 UPLOAD USER PROGRAMMABLE CAPABILITY
The User Programmable CAP can upload its
internal translation table for storage on a PC. So
you can to have a backup of the table if you ever
need it.
2.2.4 DOWNLOAD USER PROGRAMMABLE CAPABILITY
The User Programmable CAP can be programmed
by downloading a translation table from a PC. This
is useful if you want to configure more than one
unit with the same table, such as in identical
installations in multiple locations.
2.2.5 PARTIAL MATCH TIMEOUT
A Partial Match Timeout can be enabled via a menu
option. This lets the unit pass a partially matched
string through the unit if the remainder of the
string was not received within the time period set
by the user.
2.2.6. CONTROL FIELD IN SUBSTITUTE STRING
You can program a control field in each substitute
string. This lets the unit raise or lower a DTR
or RTS control lead. The unit can also enter
a program mode when a valid match string is
received.

USER PROGRAMMABLE CAP
6
Before you install the User Programmable CAP, you
should plan how to program the unit for your
application. The checklist in Section 3.1 will help
you plan your installation. After completing the
checklist, go to Section 3.2.
3.1 Installation Checklist
NOTE
In the checklist, Device A is the device
you will connect to Port A, and Device B
is the device you will connect to Port B.
Word Structure and Buffer Flow Control:
DIP Switch
Positions Device A Device B
Stop Bits
(1, 1.5, or 2) ________ ________
Parity Type
(Odd, Even, Mark,
Space or Void) ________ ________
Data Bits (5, 6, 7,
or 8) The number
should be equal to
or greater than the
number of bits
needed to represent
your data code:
ASCII — 7 or 8 bits
EBCDIC — 8 bits
TRANSCODE — 6 bits
BAUDOT — 5 bits
TICKER
TAPE — 6 bits ________ ________
Flow Control
Type (Hardware,
ENQ/ACK, X-ON/
X-OFF, None) ________ ________
Baud Rate and Data Code
DIP Switch
Positions Device A Device B
Baud Rate (Use
Table 3-5 and
choose the rates
closest to your
devices). The
rate should be
± 4% of your
device's actual
baud rate. ________ ________
Data Code
The selections
are: ASCII,
EBCDIC, TRANS-
CODE, BAUDOT,
TICKER TAPE,
and OTHER ________ ________
RS-232 Lead Options, Equipment Type,
Transmission Mode, Buffer Allocation
DIP Switch
Positions Device A Device B
Operation of
RTS Output
Lead: Normal
(for half-duplex)
Active (for full-
duplex) ________ ________
Equipment type
of CAP (DCE or
DTE must be the
opposite of your
device.) DCE when
using crossover
cable, DTE when
using straight-
pinned cable ________ ________
3.0 Installation

CHAPTER 3: Installation
7
DIP Switch
Positions Device A Device B
Transmission
Mode (Full
duplex, half-
duplex, or
simplex) ________ ________
Buffer
Allocation
Port A —
1/2, 3/4, 1/8
Port B —
1/2,1/4, 7/8 ________ ________
If one of your devices will do most, or all of the
transmission, you may assign it a larger portion of
the CAP buffer. Otherwise, assign half of the buffer
to each port.
Source of RX Enable
Device A Device B
The CAP accepts
receive data only
if its receiver
is enabled.
DCD Enables
Receiver - when
DCD is active (High),
the CAP receives
data (half-duplex)
Receiver Always
Enabled — The CAP
can always receive
(full duplex) ________ ________
Source of TX Enable
The CAP can
transmit only
when its trans-
mitter is enabled. ________ ________
CTS enables the transmitter when input is active.
Choose if your device asserts DTR with a crossover
cable, or asserts CTS when it is powered on and/or
it can receive data. You must use this option if you
are using hardware flow control.
Transmitter Always Enabled — The CAP can always
transmit (software or no flow control).
3.2 Installing the User Programmable CAP
Before the User Programmable CAP can be
installed, you must program it to match your
specific application. You must set internal DIP
switches and jumpers. This is a very simple
procedure if you first fill out the checklist in the
previous section. The checklist will help you set the
DIP switches and jumpers in a logical order.
This section explains how to set the units for your
application. Sections 3.2.1 and 3.2.2 provide some
preliminary information to help you with the
installation.
NOTE
Prior to installation, review the
specifications of all the devices in
your system to ensure compatibility
with the User Programmable CAP.
3.2.1 AC POWER
AC Power is supplied to the unit by a 115-VAC
wallmounted power supply. A 220-VAC power
supply is also available.
NOTE
Do not power on the unit until all
switch and jumper selections are
complete.
3.2.2 CABLE REQUIREMENTS
Both ports of the unit are configured as DTE. A
special crossover cable is necessary to make one
port DCE. If you require both ports to be
configured as DCE, you will need two crossover
cables.
The EIA RS-232 cable that connects to either of the
unit's two ports must be terminated with a male
DB9 connector. Table 3-1 shows all the pins on the
RS-232 interface which are supported by the User
Programmable CAP.

USER PROGRAMMABLE CAP
8
3.3 DIP Switch Settings
Positions 1-8 of each DIP switch can be turned ON
or OFF with a small-tipped instrument such as a
ballpoint pen. A switch is ON when it is pushed in
the direction of the arrow marked on the switch. If
it is pushed in the direction opposite the arrow, it is
OFF.
If any switch positions are changed with the unit
turned off, the unit is automatically set to those
options when it is turned on. If the switches are
changed with the unit turned on, you must press
the Reset button to configure the unit with the new
settings. Figure 3-1 shows the location of the DIP
switches.
PIN NAME DESCRIPTION SOURCE
1 DCD Data Carrier Detect DCE
2 RD Receive Data DCE
3 TD Transmit Data DTE
4 DTR Data Terminal Ready DTE
5 SG Signal Ground DTE and DCE
6 DSR Data Set Ready DCE
7 RTS Request to Send DTE
8 CTS Clear to Send DCE
9 RI Ring Indicator DCE
Table 3-1. Pins Supported by the User Programmable CAP
P1
S7
W3
W2
W4
S1 S2 S3 S4 S5
ON
OFF
A
B
C
A B C
C B A
RAM
SIZE
POWER
RESET
BUTTON
RXB
TXB
RXA
TXA
DB9
CONNECTORS
Figure 3-1. Switch Locations on the Circuit Board.
B
A

CHAPTER 3: Installation
9
Table 3-2 defines the function of each of the unit's
switches. Tables 3-3 through 3-8 give switch settings
for particular applications.
Table 3-2. Switch Functions
Table 3-3. Switches S1 (Port A) and S2 (Port B)
SWITCH FUNCTION
S1 Port A word structure and buffer flow control
S2 Port B word structure and buffer flow control
S3 Port A baud rate and data code set
S4 Port B baud rate and data code set
S5 Ports A and B Pass-Thru and Program Mode, equip-
ment type, transmission mode, and buffer allocation
S6 Reset Pushbutton
S7 RS-232 Interface Options
Table 3-3 shows settings for word structure and
buffer flow control.
OPTION SWITCH POSITION SETTING
1 23456 7 8
Word Structure
1 Stop Bit OFF OFF
1.5 Stop Bits ON OFF
1 Stop Bit OFF ON
2 Stop Bits ON ON
Odd Parity OFF
Even Parity ON
Parity Disable OFF
Parity Enable ON
8 Data Bits OFF OFF
7 Data Bits OFF ON
6 Data Bits ON OFF
5 Data Bits ON ON
Flow Control
Hardware OFF OFF
ENQ/ACK ON OFF
X-ON/X-OFF OFF ON
X-ON/X-OFF on Reset ON ON

USER PROGRAMMABLE CAP
10
NOTE
For all hardware flow control, CTS and
DTR Switch 7 options must not be in
the forced active position.
For no flow control and normal
software flow controls (such as
X-ON/X-OFF and ENQ/ACK), the CTS
and DTR Switch 7 options should be in
the forced active position. See Tables 4-7
and 4-8 for Switch 7 Option settings
3.4 Setting the Mark and Space Parity
In some cases, it is possible to use mark and space
parity. A mark parity bit represents a binary 1. A
space parity bit represents a binary 0.
To use either mark or space parity, Position 4 must
be OFF (to disable even or odd parity) and the
following conditions must be met.
•For Mark Parity — Mark parity can be used only
if your device is using a word structure
containing one stop bit. Set Positions 1 and 2
ON (2 stop bits). The first stop bit appears as a
mark parity bit.
•For Space Parity — Set the data bit switches for
one more data bit than the data code set
requires. For example, if your device is using the
7-bit ASCII code set, set Positions 5 and 6 for 8-
bit data (7 + 1 = 8). The extra data bit appears as
the space parity bit. The data bits required to
represent a character in each code set are as
follows:
ASCII 7
EBCDIC 8
BAUDOT 5
TICKER TAPE 6
TRANSCODE 6
NOTE
Space parity cannot be used for 8-bit
EBCDIC data because the CAP cannot
be configured for 9 bits.

CHAPTER 3: Installation
11
Table 3-4. Switch S3 (Port A) and S4 (Port B) Settings for Baud Rate and Data Code Set
OPTION SWITCH POSITION SETTING
1 23456 7 8
Baud Rate
38400 OFF OFF OFF OFF OFF
19200 ON OFF OFF OFF OFF
9600 OFF ON OFF OFF OFF
4800 ON ON OFF OFF OFF
4800 OFF OFF ON OFF OFF
2400 ON OFF ON OFF OFF
2400 OFF ON ON OFF OFF
1828.72 ON ON ON OFF OFF
1371.54 OFF OFF OFF ON OFF
1200 ON OFF OFF ON OFF
1037.92 OFF ON OFF ON OFF
600 ON ON OFF ON OFF
300 OFF OFF ON ON OFF
200 ON OFF ON ON OFF
164.82 OFF ON ON ON OFF
150 ON ON ON ON OFF
1371.54 OFF OFF OFF OFF ON
1200 ON OFF OFF OFF ON
1037.92 OFF ON OFF OFF ON
600 ON ON OFF OFF ON
300 OFF OFF ON OFF ON
200 ON OFF ON OFF ON
164.82 OFF ON ON OFF ON
150 ON ON ON OFF ON
134.28 OFF OFF OFF ON ON
110.35 ON OFF OFF ON ON
100 OFF ON OFF ON ON
74.42 ON ON OFF ON ON
67.14 OFF OFF ON ON ON
55.82 ON OFF ON ON ON
50 OFF ON ON ON ON
45.5 ON ON ON ON ON
Data Code Set
ASCII OFF OFF OFF
EBCDIC ON OFF OFF
TRANSCODE OFF ON OFF
BAUDOT ON ON OFF
TICKER TAPE OFF OFF ON

USER PROGRAMMABLE CAP
12
NOTE
If your desired baud rate is within 4%
of one listed in Table 3-4, in most cases
you should set the unit to the listed
rate.
NOTE
Make sure Switches S1 and S2 are set
for the correct number of data bits for
the particular Data Code set chosen
(Table 3-3 and the code set list in
Section 3.4).
OPTION SWITCH POSITION SETTING
1 23456 7 8
Port A Mode
Pass-Thru Mode OFF
Program Mode ON
Port B Mode
Pass-Thru Mode OFF
Program Mode ON
Equipment Type That
Port A Should Emulate
DCE - Crossover cable OFF
DTE - Straight-pinned cable ON
Port A Mode
Full Duplex OFF
Half Duplex ON
Equipment Type That
Port B Should Emulate
DCE - Crossover cable OFF
DTE - Straight-pinned cable ON
Port B Mode
Full Duplex OFF
Half Duplex ON
Buffer Allocation
Port A Port B
1/2 1/2 OFF OFF
3.4 1/4 ON OFF
1/8 7/8 OFF ON
RESERVED ON ON
Table 3-5. Switch S5 Settings for the User Programmable CAP

CHAPTER 3: Installation
13
Table 3-6. Switch S7 Settings for the User Programmable CAP
OPTION SWITCH POSITION SETTING
1 23456 7 8
RI Input Port A
Forced Inactive (Low) OFF
Monitored (Custom programming ON
only)
DTR Output Port A
Forced active (High) OFF
Controlled (Hardware ON
flow control)
DCD Input Port A
Forced active (High) OFF
Monitored (enables ON
Receive Data)
CTS Input Port A
Forced active (High) OFF
Monitored (enables ON
Transmit Data)
RI Input Port B
Forced Inactive (Low) OFF
Monitored (custom programming ON
only)
DTR Output Port B
Forced active (High) OFF
Controlled (hardware ON
flow control)
DCD Input Port B
Forced active (High) OFF
Monitored (enables ON
Receive Data)
CTS Input Port B
Forced active (High) OFF
Monitored (enables ON
Transmit Data)

USER PROGRAMMABLE CAP
14
Table 3-7 DSR Jumper Settings for User Programmable CAP
FUNCTION JUMPER POSITION
DSR Jumper for Port A — No Connection W2 — AB
DSR Jumper for Port A — Forced Active W2 — BC
DSR Jumper for Port B — No Connection W3 — AB
DSR Jumper for Port B — Forced Active W3 — BC
3.5 User Programmable CAP to Device
Connection
After the unit is programmed for your application,
you can physically install it.
Connect the unit to the two incompatible devices
with RS-232 cables. Make sure the port configured
for Device A is connected to Device A, and the port
configured for Device B is connected to Device B.
Apply AC Power.
Your unit is ready for operation.
3.6 Rackmount Application
The Cards (CMA005C) are installed into the
RM010 Rack, which holds up to 12 Cards. For
Rackmount Card Application, the configuration is
idential to the CMA005A configuration.
NOTE
Remember the neither the CMA005A or
CMA005C are supplied with cables. If
you need cables, you will have to order
them separately.

CHAPTER 4: Operation
15
The User Programmable CAP uses the
Programming Mode to enter and update translation
equations and other parameters used in the
translation process.
Programming Mode is menu-driven. You will need a
dumb terminal (or similar device) to use the
Programming Mode. Cursor positioning is not used.
The only control characters used in the menu
screens are carriage return and linefeed characters,
which terminate every line.
4.1 Entering and Exiting the Programming Mode
You can access the Program Mode through either
port. Remove the cover of the unit, and turn on the
Program Mode DIP switch for the port. When one
port is in Program Mode, the other port is disabled.
To exit the Program Mode, select the X option from
the main menu. Remove the unit's cover and turn
off the Program Mode DIP switch for the port.
Then either press the reset pushbutton, or turn the
unit off and on again.
4.2 Programming Menu
When you are in Program Mode, a menu-driven
program helps you with adding and editing the
translation equations.
This is the Main Menu:
PROGRAM MODE MENU
(1) ADD a new translation
(2) DELETE an old translation
(3) LIST & EDIT one translation
(4) INSERT a translation
(5) LIST ALL translation equations
(6) CLEAR ALL translation equations
(7) UPLOAD translation table
(8) DOWNLOAD translation table
(9) Set Partial String Timeout
(A) Set Special Flow Control Mode
(X) EXIT from program mode
Please enter your selection (1-9, A, X):
The options are explained below:
•Add — This option lets you add one translation
equation. The unit can store up to 150 different
translation equations. Each translation equation
is assigned an equation number, from 001 to
150, when you enter the equation into the unit.
•Delete — The unit prompts you for an Equation
Number when you select this function. If you
don't know the number of the equation you
want to delete, select the List All function from
the Main Menu, and the screen will show all
Equations and their numbers.
NOTE
When an equation is deleted, all of the
remaining equation numbers (after the
one deleted) are moved up one place.
For example, if you delete Equation No.
003, Equation 004 becomes 003, and so
on.
•List and Edit — The unit prompts you for an
Equation Number when you select this function.
After you enter the number, the program
displays the existing equation and lets you edit
it. If you don't know the Equation Number,
select the List All function.
•Insert — The unit prompts you for an Equation
Number when you select this function. The
translation entered is inserted before the
Equation Number specified. If you don't know
the Equation Number, select the List All
function.
4.0 Operation

USER PROGRAMMABLE CAP
16
•List All — Here's a sample of what appears on
your screen when you select this option:
TRANSLATION KEY: M - Match String
S - Substitute String
F - Function Code
TRANSLATIONS IN PORT A TO PORT B DIRECTION
(PRESS ANY KEY TO SCROLL, PRESS RETURN TO
RETURN TO MENU)
#: TRANSLATION:
001 M-CATALOG
S - DIR
002 M - LISTFILE
S - TYPE
•Clear All — This option lets you delete all
equations from memory. The unit asks you "Do
you really want to do this? Y/N." Entering Y
deletes all equations. Entering Nor any other
key returns you to the Main Menu.
•Upload Translation Table — This option causes
the unit to upload its internal translation table
for storage on a PC.
• Download Translation Table — This option lets
the User Programmable CAP be programmed
by downloading a translation table stored on a
PC. It overwrites any existing translation
equations currently stored in the unit.
•Set Partial String Timeout — This option allows
the User Programmable CAP to pass a partially
matched string through the unit if the
remainder of the string was not received within
the time period set by the user. This timeout can
be set in the range of 1 second to 5 minutes or
disabled.
•Set Special Flow Control Modes — This option
allows you to set the function of the RTS
andDTR control leads on Port A and Port B.
There are three optons available for each of the
leads: normal operation, always high, and always
low.
DTR Normal Operation — If this option is
selected, DTR is on after reset. DTR will remain
on unless the User Programmable CAP buffer
fills, then DTR will turn off drop until there is
more room in the buffer, then it will turn on
again.
DTR Always High — This option turns DTR on
after reset and it will remain on unless it is
changed by a function code.
DTR Always Low — This option turns DTR off
after reset and it will remian off unless it is
changed by a function code.
RTS Normal Operation — If this option is
selected, RTS is off after reset. RTS will remain
off until the User Programmable CAP has data
to send out a port. At this point, the User
Programmable CAP will raise RTS of that port,
send the data out, and when it has no more data
to send, it will drop RTS.
RTS Always High — This option turn RTS on
after reset and it will remain on unless it is
changed by a function code.
RTS Always Low — This option turns RTS off
after reset and it will remain off unless it is
changed by a function code.
4.3 Translation Equation Entry
Each translation equation has certain parameters
associated with it. To create a translation equation,
you must do the following:
• Define the direction of the translation.
• Define a match string.
• Define a substitution string.
• Define an optional function code.
4.3.1 DIRECTION OF TRANSLATION
The Direction of Translation involves the User
Programmable CAP asking you if the translation is
in the Port A to Port B direction or in the Port B to
Port A direction.
4.3.2 ENTERING MATCH AND SUBSTITUTION STRINGS
The match string and the substitution string can
each be up to 255 characters long. To enter a match
or substitution string, type 1 to 255 characters and
hit Return (or Enter). You can enter control
characters by typing a backslash ( \ ) followed by the
two hexadecimal digits that represent the desired
character. If you want to enter an actual backslash,
type two backslashes for each one you need. To
enter a carriage return, type \0D.

CHAPTER 4: Operation
17
Example 1: Convert Carriage Return to Carriage
Return Linefeed.
Match String \0D
Substitute String \0D\0A
Example 2: Convert Backspace to Escape "[A"
Match String \08
Substitute String \1B[A
4.3.3 ENTERING FUNCTION CODES
The optional function code associated with each
translation enables the User Programmable CAP
to take additional action when a match string is
encountered in the data stream. These actions
include raising or lowering RTS, raising or lowering
RTS, or enterng program mode. The program
mode selection allows the user to define a software
string to enter program mode. These options can
be used separately or together. For example: when
a match string is received, the User Programmable
CAP can drop DTR and raise RTS.

CAP AND USER PROGRAMMABLE CAP
18
If you have difficulty with your application, the
problem may be in either the unit's configuration
or the cabling between the devices. This chapter
advises you how to quickly find and correct the
problem.
5.1 Diagnostic LEDs
Five diagnostic LEDs are mounted on the front of
the unit. One LED is for POWER. Two LEDs are for
Port A, and two are for Port B. The two LEDs for
each port are Receive Data and Transmit Data. If
the unit does not appear to be communicating with
your devices, the following checklist may be useful.
1.Power — The Power LED should be on when
the unit is plugged into a wall outlet. The unit
will not operate without power.
2.Receive — This indicator flashes when the unit
receives data. The unit cannot pass information
between two devices unless it receives data to
transmit. Never assume your equipment is
transmitting data to the unit. Monitor this LED
to verify that the unit is actually receiving data.
If this LED does not flash when your device is
transmitting to the unit, check the following:
a) Verify whether your device is DTE or DCE.
b) Check that the crossover cable pinning is
correct.
If the LED doesn't flash, another problem might
be that the unit is ignoring the data your device
is sending. This happens if the CAP's receiver is
not enabled, or if the data doesn't have the
same baud rate that you have configured for the
CAP to use. Check the baud rate and DCD input
DIP switch options.
3.Transmit — If the CAP receives data when its
receive enable is active, it puts the data in its
internal buffer. Then the CAP attempts to
transmit the data out the other port. However,
the CAP cannot transmit if it is flow-controlled
OFF. If the transmit LED does not light, check
the flow control and the CTS DIP switch
options.
5.2 Cables and Configuration
If the LEDs for both ports are working properly, but
the two devices are not communicating with each
other, check the following:
1.Check for a good connection between Pins 2, 3,
and 7 of the cables that attach your equipment
to the CAP. These are the pins for TXD, RXD,
and Signal Ground.
2.Recheck all DIP switches and jumper positions
for both ports to verify that the CAP is
configured to match both devices it is
connecting. For example, if Port A is configured
to use one stop bit and your device is expecting
two, it may not receive the data correctly.
5.0 Troubleshooting