Moxa Technologies CA Series User manual

CA and CB Series Multiport Serial Module
User’s Manual
Edition 8.1, November 2017
www.moxa.com/product
© 2017 Moxa Inc. All rights reserved.

CA and CB Series PC/104 Multiport Serial
Module User’s Manual
The software described in this manual is furnished under a license agreement and may be used only in accordance with
the terms of that agreement.
Copyright Notice
© 2017 Moxa Inc. All rights reserved.
Trademarks
The MOXA logo is a registered trademark of Moxa Inc.
All other trademarks or registered marks in this manual belong to their respective manufacturers.
Disclaimer
Information in this document is subject to change without notice and does not represent a commitment on the part of
Moxa.
Moxa provides this document as is, without warranty of any kind, either expressed or implied, including, but not limited
to, its particular purpose. Moxa reserves the right to make improvements and/or changes to this manual, or to the
products and/or the programs described in this manual, at any time.
Information provided in this manual is intended to be accurate and reliable. However, Moxa assumes no responsibility for
its use, or for any infringements on the rights of third parties that may result from its use.
This product might include unintentional technical or typographical errors. Changes are periodically made to the
information herein to correct such errors, and these changes are incorporated into new editions of the publication.
Technical Support Contact Information
www.moxa.com/support
Moxa Americas
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-free: 1-888-669-2872
Tel:
[phone]
Fax:
[phone]
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Toll
-free: 800-820-5036
Tel:
[phone]
Fax:
[phone]
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-Pacific
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Table of Contents
1. Introduction...................................................................................................................................... 1-1
Overview ...........................................................................................................................................1-2
Package Checklist ............................................................................................................................... 1-2
Product Specifications .........................................................................................................................1-3
2. Hardware Installation ....................................................................................................................... 2-1
Hardware Installation ..........................................................................................................................2-2
Block Diagrams ..................................................................................................................................2-2
I/O Base Address (For CA Series) ..................................................................................................2-4
Rotary Switch(For CB Series)........................................................................................................2-5
Termination Resistor....................................................................................................................2-5
Interrupt Vector for CA Series .......................................................................................................2-5
Serial Interface...................................................................................................................................2-6
3. Software Installation ........................................................................................................................ 3-1
Windows OS.......................................................................................................................................3-2
Older OS for CA Series.................................................................................................................3-2
Older OS for CB Series............................................................................................................... 3-20
Newer OS for Both CA/CB Series ................................................................................................. 3-43
Non-Windows OS.............................................................................................................................. 3-59
4. Serial Programming Tools ................................................................................................................. 4-1
Serial Programming Library..................................................................................................................4-2
PComm Utilities .................................................................................................................................. 4-2
Installation .................................................................................................................................4-2
PComm Diagnostic ......................................................................................................................4-2
PComm Monitor ..........................................................................................................................4-3
PComm Terminal Emulator ...........................................................................................................4-3
5. Smartio/Industio Programming Guide .............................................................................................. 5-1
Relative Product List ...........................................................................................................................5-2
Resource Requirement for Moxa Board ..................................................................................................5-2
PCI Configuration for Moxa Board .........................................................................................................5-2
UART Register Structure for MU860 chip................................................................................................5-3
UART Register Structure for MUE250, MUE450, and MUE850 chips............................................................5-4
For Baud Rate Setting .........................................................................................................................5-5
Moxa Board PCI Device ID List .............................................................................................................5-6
UART Datasheet .................................................................................................................................5-6
6. Pin Assignments................................................................................................................................ 6-1
Box Header Pin Assignments ................................................................................................................6-1
RS-232 ......................................................................................................................................6-1
RS-422, 4-wire RS-485 ................................................................................................................6-1
2-wire RS-485 ............................................................................................................................6-2

1
1. Introduction
Welcome to the CA and CB Series of PC/104 communication modules, a multiport serial module for industrial
applications. It is designed for the PC/104 CPU and PC/104-Plus boards that respectively accept the PC/104
and PC/104-Plus expansion interface. Optional DB9 and DB25 cables are available to connect different devices.
The CA Series includes the following models:
CA
-108:
8 ports, RS
-232
CA
-108-T:
8 ports, RS
-232, wide temperature
CA
-114:
4 ports, RS
-232/422/485
CA
-114-T:
4
ports, RS-232/422/485, wide temperature
CA
-134I:
4 ports, RS
-422/485, optical isolation protection
CA-134I-T:
4 ports, RS-422/485, optical isolation protection, wide temperature
CA
-104:
4 ports, RS
-232
CA
-104-T :
4 ports, RS
-232, wide temperature
CA
-132:
2 ports, RS
-422/485
CA
-132-T:
2 ports, RS
-422/485, wide temperature
CA-132I:
2 ports, RS-422/485, optical isolation protection
CA
-132I-T:
2 ports, RS
-422/485, optical isolation protection, wide temperature
The CB Series includes the following models:
C
B-108:
8 ports, RS
-232
C
B-108-T:
8 ports, RS
-232, wide temperature
CB-114:
4 ports, RS-232/422/485
C
B-114-T:
4 ports, RS
-232/422/485, wide temperature
C
B-134I:
4 ports, RS
-422/485, optical isolation protection
C
b-134I-T:
4 ports,
RS-422/485, optical isolation protection, wide temperature
2 kV optical isolation is provided on optical isolation models. Wide-temperature models are rated for operation
between -40 to 85°C.
The following topics are covered in this chapter:

Overview

Package Checklist

Product Specifications

CA Series PC/104 Introduction
1-2
Overview
The PC/104 standard serial boards are very popular for embedded applications. Moxa offers a wide selection of
PC/104 and PC/104-Plus serial boards to provide industrial-grade connections to multiple serial devices.
Use Moxa's serial boards so that your PC/104-based systems can establish serial device connections with high
data throughput over multiple serial interfaces. The CA serial board series is for PC/104 modules, while the CB
serial board series is for PC/104-Plus modules.
Package Checklist
MOXA performs a careful mechanical and electrical inspection of each module prior to shipping. Your module
should arrive in perfect electrical order, free of any marks or scratches. Please handle the module by the edges
only, since your body’s static charge can damage the integrated circuits. When the module is not in use, please
keep it in the anti-static package provided. You may also use this package to return the module if it requires
repair.
The CA/CB Series module is shipped with the following items:
•Multiport serial module (PC/104 is for CA Series; PC/104-Plus is for CB Series)
•Documentation and software CD
•Quick installation guide
•5-year product warranty statement
NOTE
Please notify your sales representative if any of the above items are missing or damaged.
The CA Series module features the following:
•Two, four, or eight serial ports (depending on the model)
•RS-232, RS-422, or RS-485 operation (depending on the model)
•64-byte FIFOs and on-chip flow control
•Up to 921.6Kbps data transmission speed
•Built-in 15 KV ESD protection
•Configurable IRQ and I/O settings
•Onboard Tx, Rx LED indicators for each port
•Optional wide temperature support (-40 to 85°C)
The CB Series module features the following:
• Four or eight serial ports (depending on the model)
• RS-232, RS-422, or RS-485 operation (depending on the model)
• 128-byte FIFOs and on-chip flow control
• Up to 921.6Kbps data transmission speed
• Built-in 15 KV ESD protection
• Onboard Tx, Rx LED indicators for each port
• Optional wide temperature support (-40 to 85°C)

CA Series PC/104 Introduction
1-3
Product Specifications
CA Series PC/104 Multiport Serial Module
Hardware
I/O controller
16C550C or compatible
Connector Type
40
-pin box header (CA-108, CA-114, CA-134I, CA-104 )
20
-pin box header (CA-132 , CA-132I )
Interface
Bus
PC/104 bus (Ver. 2.4)
No. of Ports
2 ports (CA
-132 , CA-132I )
4
ports (CA-114, CA-134I, CA-104 )
8 ports (CA
-108)
Max. No. of Modules
8
Signals
RS
-232
TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS
-422
TxD+(B), TxD
-(A), RxD+(B), RxD-(A), GND
4
-wire RS-485
TxD+(B), TxD
-(A), RxD+(B), RxD-(A), GND
2
-wire RS-485
Data+(B), Data
-(A), GND
Performance
Baudrate
50 bps to 921.6 Kbps
(supports nonstandard baud rates)
Configuration
Parity
None, Even, Odd, Space, Mark
Data Bits
5, 6, 7, 8
Stop Bit(s)
1, 1.5, 2
IRQ
Shared IRQ for all ports
(includes IRQ 3, 4,
5, 6, 7, 9, 10, 11, 12, 15)
FIFO
64 bytes
Additional Settings
I/O base address, interrupt vector, serial interface (all by DIP switch)
Driver Support
DOS
Windows 200
0/XP/2003/Vista/2008/7/8/8.1/10 (x86/x64), Windows
Server 2008 R2/2012/2012 R2/2016 (x64
)
Linux 2.4, Linux 2.6
Power and Environment
Operating Temperature
Standard models: 0 to 55°C (32 to 131°F)
“
-T” models:, -40 to 85°C (-40 to 185°F)
Operating Humidity
5 to 95% RH
Storage Temperature
-
40 to 70°C (-40 to 158°F)
ESD Protection
Embedded 15 KV ESD protection
Other
Dimensions (W x D)
96 x 90 mm
Regulatory Approvals
EN55022 Class A, EN55024, EN6100
-3-2, EN61000-3-3, FCC Part 15
Class A
Warranty
5 years

CA Series PC/104 Introduction
1-4
CB Series PC/104
-Plus Multiport Serial Module
Hardware
I/O controller
MU860 (16C550C compatible)
Connector Type
40
-pin box header
Interface
Bus
PC/104
-Plus (PCI) bus
No. of Ports
4 ports (CB
-114, CB-134I)
8 ports (CB
-108)
Max. No. of Modules
8
Signals
RS
-232
TxD, RxD
, RTS, CTS, DTR, DSR, DCD, GND
RS
-422
TxD+(B), TxD
-(A), RxD+(B), RxD-(A), GND
4
-wire RS-485
TxD+(B), TxD
-(A), RxD+(B), RxD-(A), GND
2
-wire RS-485
Data+(B), Data
-(A), GND
Performance
Baudrate
50 bps to 921.6 Kbps
(supports nonstandard baud
rates)
Configuration
Parity
None, Even, Odd, Space, Mark
Data Bits
5, 6, 7, 8
Stop Bit(s)
1, 1.5, 2
IRQ
BIOS assigned
FIFO
128 bytes
Additional Settings
Serial interface selection by DIP switch
Driver Support
DOS
Windows
2000/XP/2003/Vista/2008/7/8/8.1/10 (x86/x64),
Windows Server 2008 R2/2012/2012 R2/2016 (x64)
Linux 2.4, Linux 2.6 (x86 and x64)
Power and Environment
Operating Temperature
Standard models: 0 to 55°C (32 to 131°F)
“
-T” models:, -40 to 85°C (-40 to 185°F)
Operating Humidity
5 to 95% RH
Storage Temperature
-
40 to 70°C (-40 to 158°F)
ESD Protection
Embedded 15 KV ESD protection
Other
Dimensions (W x D)
96 x 90 mm
Regulatory Approvals
EN55022 Class A, EN55024, EN6100
-3-2,
EN61000
-3-3, FCC Part 15 Class A
Warranty
5 years

2
2. Hardware Installation
This chapter explains how to install the CA/CB Series multiport serial module.
The following topics are covered in this chapter:

Hardware Installation

Block Diagrams
I/O Base Address (For CA Series)
Rotary Switch(For CB Series)
Termination Resistor
Interrupt Vector for CA Series

Serial Interface

CA Series PC/104 Hardware Installation
2-2
Hardware Installation
Installing the CA/CB Series module is easy. For the CA Series, before inserting the module into the PC/104 slot,
you must first configure the I/O base address, interrupt vector, IRQ, and serial interface (for select models).
ATTENTION
Safety First!
To prevent damage to your system or boa
rd, make sure your embedded PC’s power is turned off before
installing your CA
/CB Series module.
CA Series CB Series
Step 1: Shut off power to your embedded PC and
to any peripheral devices. After shutting
off power, remove the cover of your
embedded PC.
Step 2: Use the DIP switches on the module to
select the I/O base address, interrupt
vector, IRQ, and serial interface (for
select models). Details for each model
are provided later in this chapter.
Step 3: Insert the module firmly into the
embedded PC’s PC/104 slot.
Step 4: Screw the control board in place
Step 5: Connect the cables.
Step 6: Power on the embedded PC.
Step 1: Shut off power to your embedded PC
and to any peripheral devices. After
shutting off power, remove the cover
of your embedded PC.
Step 2: Use the DIP switches on the module
to select the serial interface. Details
for each model are provided later in
this chapter.
Step 3: Insert the module firmly into the
embedded PC’s PC/104-Plus slot.
Step 4: Screw the control board in place.
Step 5: Connect the cables.
Step 6: Power on the embedded PC. The
BIOS will automatically set the IRQ
and I/O address.
Step 7: Proceed with the software
installation. Please refer to Chapter 3.
Block Diagrams
CA-108

CA Series PC/104 Hardware Installation
2-3
CA-114
CA-134I, CA-132 , CA-132I
CA-104

CA Series PC/104 Hardware Installation
2-4
CB-108
CB-114
CB-134I
I/O Base Address (For CA Series)
Use DIP switch SW1 to set port 1’s I/O base address. The other ports will be configured automatically. The
default I/O base address is 0×180 and allows settings from 0×000 to 0×3FF. Some popular settings are
provided below:
A3 A4 A5 A6 A7 A8 A9
8 1 2 4 8 1 2 Hex
ON ON ON ON ON ON ON 0×000
ON ON ON ON ON ON off 0×200

CA Series PC/104 Hardware Installation
2-5
ON ON ON ON ON off off 0×300
ON ON ON ON off off off 0×380
ON ON ON off off off off 0×3C0
ON ON off off off off off 0×3E0
ON off off off off off off 0×3F0
off off off off off off off 0×3F8
off ON ON ON ON ON ON 0×008
off off ON ON ON ON ON 0×018
off off off ON ON ON ON 0×038
off off off off ON ON ON 0×078
off off off off off ON ON 0×0F8
off off off off off ON off 0×2F8
For example, an I/O base address of 0×180 should be set as follows:
A3 A4 A5 A6 A7 A8 A9 Hex
ON ON ON ON off off ON 0×180
= on, = off
The other serial ports will be set automatically to 0×188, 0×190, 0×198, etc.
Rotary Switch(For CB Series)
A rotary switch on the board makes it easy to set the appropriate signals, particularly when installing multiple
PC/104-Plus modules in the same unit. The rotary switch, which looks like a clock, provides a bidirectional path
with no signal propagation delay. The first module on the stack should be set to CLK0, the second to CLK1, etc.,
to eliminate clock skew between modules.
Termination Resistor
Onboard termination resistors can be activated individually for each serial port using jumpers. With regard to
the CA Series: for CA-114 and CA-134I, use JP1 through JP4; for CA-132 and CA-132I, use JP1 and JP2. JP1
corresponds to serial port 1. For the CB Series, use jumpers JP1 through JP4. JP1 corresponds to serial port 1.
Short the jumper pins to activate the termination resistor; leave the jumper pins open to bypass the
termination resistor.
Interrupt Vector for CA Series
Use DIP switch SW2 to set port 1’s interrupt vector. The default interrupt vector is 0×1C0, with SW2 set as
follows:
A3 A4 A5 A6 A7 A8 A9 Hex
ON ON ON off off off ON 0×1C0

CA Series PC/104 Hardware Installation
2-6
= on, = off
Serial Interface
CA Series
For the CA-114, use SW3, SW4, and SW5 to select the serial interface as follows:
Interface RS-232 RS-422 4w
RS-485
2w
RS-485
SW3 – – ON OFF
SW4 – ON OFF OFF
SW5 ON OFF OFF OFF
For the CA-134I, CA-132 , and CA-132I , use the 2-WIRE/4-WIRE and RS-422/RS-485 DIP switches to select
the serial interface as follows:
Interface 2-WIRE/4-WIRE RS-422/RS-485
RS-422 – OFF
4-wire RS-485 OFF ON
2-wire RS-485 ON ON
CB Series
For the CB-114 and CB-134I, use the DIP switch to select serial interface.
CB-114
Mode
S1
S2
S3
RS-232 - - ON
RS-422 - ON OFF
4-wire RS-485 ON OFF OFF
2-wire RS-485 OFF OFF OFF
CB-134I
Mode S1 S2
RS-422 - OFF
4-wire RS-485 OFF ON
2-wire RS-485 ON ON

CA Series PC/104 Hardware Installation
2-7
IRQ for CA Series
Before selecting an IRQ, please enter the PC’s BIOS and reserve a dedicated IRQ for the module. On the module,
the IRQ is set by a jumper. Before inserting the module into the PC/104 slot, use the jumper to select an IRQ
(3, 4, 5, 6, 7, 9, 10, 11, 12, or 15).

3
3. Software Installation
After installing the CA/CB Series module in your embedded computer, the next step is installing the software.
Drivers for various operating systems are provided, including DOS, Windows, and Linux. This chapter explains
how to install and remove the CA/CB Series driver.
The following topics are covered in this chapter:

Windows OS
Older OS for CA Series
Older OS for CB Series
Newer OS for Both CA/CB Series

Non-Windows OS

CA Series PC/104 Software Installation
3-2
Windows OS
Older OS for CA Series
DOS
Moxa DOS API-232 is a software package that can help you develop or debug serial communications programs.
This section will explain how to install the package, set up the driver, and load or unload the driver. For
additional information about the API-232 library and utilities, please refer to Chapter 4.
The DOS drivers support the CA-104, CA-104-T, CA-132, CA-132-T, CA-132I, and CA-132I-T. The CA-108,
CA-114, and CA-134I models are not supported under DOS.
In the following instructions, the CA-104 is used as an example.
Installing the Driver
Run the installation program, DOSINST.EXE, in the DOS folder. Specify the target directory for the API-232
files (e.g., C:\MOXA). Press F2 to start the installation.
When the installation is completed, you will be prompted to set up the board and driver initial values. We
strongly recommendthat you do so.

CA Series PC/104 Software Installation
3-3
Driver Setup
The following instructions are not intended to illustrate every function of the setup program. For more detailed
information, please refer to the help files by pressing F1 in the setup program.
1. Run the setup program BIN\SETUP.EXE.
2. Select your CA Series model and press Enter.
3. You must set the Port No., I/O Address, IRQ, and INT Vector properly. These settings must match your
module’s hardware configuration.
4. Press PgDn to view advanced the port setup options. Your module’s configuration will be displayed along
with other settings, such as port number, buffer size, etc.

CA Series PC/104 Software Installation
3-4
5. Verify the settings and make any necessary changes.
Port number:
This is the port ID of each port. Application software will refer to a port by its port
number (ID). Port numbers must be unique; duplicate
d port numbers are not
allowed. The port ID can range from 0 to 127 as long as it does not overlap with
another port. Generally, you should consider the convenience of programming
when specifying the port
number.
TxD buffer size:
This is the transmission (output) buffer allocated in the system for each port.
RxD buffer size:
This is the receiving (input) buffer allocated in the system for each port.
F5: Group Edit:
This allows you to configure several ports simultaneously as a group.
6. Press F10 to save the latest configuration and exit the setup program.

CA Series PC/104 Software Installation
3-5
Loading the Driver
After setting up the driver, you must load the driver in order to gain access to the serial ports on the module.
Run BIN\DPC-DRV.EXE at the DOS prompt. The driver will detect your CA Series module automatically. You
should see messages indicating successful detection of your module, such as the following:
PC/104 Communication Module DOS driver Version 1.0
Setup driver …
CA-104 series OK!
Device driver setup O.K.
At this point, you can execute applications that support API-232 functions, or start developing applications
using the API-232 library.
Unloading the Driver
To unload or release the CA Series driver from memory, enter DPC-DRV/Q at the DOS prompt.
Windows NT
The Windows NT drivers conform to the Win32 COMM API standard and support the CA-104, CA-104-T, CA-132,
CA-132-T, CA-132I, CA-132I-T. CA-108, CA-114, and CA-134I.
In the following instructions, the CA-104 is used as an example.
Installing the Driver
1. Right-click Network Neighborhood and select Properties in the context menu.
2. Under the Adapters tab, click Add….

CA Series PC/104 Software Installation
3-6
3. When prompted to select a network adapter, click Have Disk.
4. At the prompt, insert the installation disk provided with your module.
For the location, enter A:\windows.nt. Click OK to continue.
5. Windows will install the drivers.