CP-134U Series
4-port RS-422/485 Universal PCI serial boards with optional 2 kV isolation

Features and Benefits
• Over 700 kbps data throughput for top performance
• 921.6 kbps maximum baudrate for fast data transmission
• ADDC® provides automatic data direction control for RS-485 signals
• 128-byte FIFO and on-chip H/W, S/W flow control
• Compatible with 3.3/5 V PCI and PCI-X
• Drivers provided for a broad selection of operating systems, including
Windows, Linux, and UNIX
• Ports 1 and 2 support RS-232 and RS-422/485
• Wide-temperature model available for -40 to 85°C environments

Certifications

Introduction
The CP-134U and CP-134U-I 4-port universal PCI boards are designed for industrial automation applications that require a long-distance,
multipoint, PC-based data acquisition solution.
On-Chip Automatic Data Direction Control for Precise RS-485 Communication
RS-485 communication requires precise timing control to enable and disable the line driver. The Moxa Turbo Serial Engine™ chip that powers the
CP-134U board comes with on-chip ADDC®, which makes RS-485 as easy to use as RS-232.
RS-485 Multidrop for up to 31 Devices Within 1.2 km
The CP-134U universal PCI board has four RS-422/485 serial ports, each of which can achieve data rates up to 921.6 kbps. In RS-485 mode, the
board can connect up to 31 daisy-chained RS-485 devices within a range of 1.2 km. For long-distance RS-485 communication, choose the CP-
134U-I, which comes with 2 kV electrical isolation protection to prevent equipment damage.
Drivers Provided for Windows, Linux, and UNIX
We continue to support a wide variety of operating systems, and the CP-134U and CP-134U-I boards are no exception. Reliable Windows, Linux,
and UNIX drivers are provided for all Moxa boards, and other operating systems, such as WEPOS, are also supported for embedded integration.

Specifications
Serial Interface
Comm. Controller MU860 (16C550C compatible)

Bus 32-bit Universal PCI

Connector DB44 female

FIFO 128 bytes

Max. No. of Boards per PC 8

No. of Ports 4

Serial Standards 2 x RS-232/422/485, 2 x RS-422/485

Baudrate 50 bps to 921.6 kbps

Data Bits 5, 6, 7, 8


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Stop Bits 1, 1.5, 2

Parity None, Even, Odd, Space, Mark

Flow Control None, RTS/CTS, XON/XOFF

Isolation CP-134U-I Series: 2 kV

Serial Signals
RS-232 TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND

RS-422 Tx+, Tx-, Rx+, Rx-, RTS+, RTS-, CTS+, CTS-, GND

RS-485-4w Tx+, Tx-, Rx+, Rx-, GND

RS-485-2w Data+, Data-, GND

Serial Software Features
Windows Drivers DOS, Windows 95/98/ME/NT/2000, Windows XP/2003/Vista/2008/7/8/8.1/10 (x86/x64),
Windows 2008 R2/2012/2012 R2/2016/2019 (x64), Windows Embedded CE 5.0/6.0,
Windows XP Embedded

Linux Drivers Linux kernel 2.4.x, Linux kernel 2.6.x, Linux kernel 3.x, Linux kernel 4.x, Linux kernel 5.x

UNIX Drivers QNX 6, SCO OpenServer, UnixWare 7, Solaris 10, FreeBSD

Power Parameters
Input Current CP-134U Series: 180 mA @ 5 VDC
CP-134U-I Series: 850 mA @ 5 VDC

Physical Characteristics
Dimensions CP-134U Series: 82.5 x 120 mm (3.24 x 4.72 in)
CP-134U-I Series: 115 x 120 mm (4.52 x 4.72 in)

LED Interface
LED Indicators Built-in Tx, Rx LEDs for each port

Environmental Limits
Operating Temperature Standard Models: 0 to 55°C (32 to 131°F)
Wide Temp. Models: -40 to 85°C (-40 to 185°F)

Storage Temperature (package included) -40 to 85°C (-40 to 185°F)

Ambient Relative Humidity 5 to 95% (non-condensing)

Standards and Certifications
EMC EN 55032/35

EMI CISPR 32, FCC Part 15B Class B

EMS IEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 3 V/m

Declaration
Green Product RoHS, CRoHS, WEEE

MTBF
Time 480,209 hrs

Standards Telcordia SR332


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Warranty
Warranty Period 5 years

Details See www.moxa.com/warranty

Package Contents
Device 1 x CP-134U Series serial board

Cable 1 x M44 to 4 x DB9-M cable, 50 cm (-DB9M models)
1 x M44 to 4 x DB25-M cable, 50 cm (-DB25M models)

Documentation 1 x quick installation guide
1 x substance disclosure table
1 x warranty card

Dimensions
CP-134U CP-134U-I

Ordering Information
Model Name Serial Standards No. of Serial Ports Serial Isolation

Protection Operating Temp. Included Cable

CP-134U w/o Cable 2 x RS-232/422/485

2 x RS-422/485 4 – 0 to 55°C –
CP-134U-T 2 x RS-232/422/485

2 x RS-422/485 4 – -40 to 85°C –
CP-134U-DB9M 2 x RS-232/422/485

2 x RS-422/485 4 – 0 to 55°C CBL-M44M9x4-50
CP-134U-DB25M 2 x RS-232/422/485

2 x RS-422/485 4 – 0 to 55°C CBL-M44M25x4-50
CP-134U-I w/o Cable 2 x RS-232/422/485

2 x RS-422/485 4 2 kV 0 to 55°C –
CP-134U-I-T 2 x RS-232/422/485

2 x RS-422/485 4 2 kV -40 to 85°C –
CP-134U-I-DB9M 2 x RS-232/422/485

2 x RS-422/485 4 2 kV 0 to 55°C CBL-M44M9x4-50
CP-134U-I-DB25M 2 x RS-232/422/485

2 x RS-422/485 4 2 kV 0 to 55°C CBL-M44M25x4-50


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Accessories (sold separately)
Cables
CBL-M44M25x4-50 M44 to 4 x DB25 male serial cable, 50 cm
CBL-M44M9x4-50 DB44 male to DB9 male serial cable, 50 cm

© Moxa Inc. All rights reserved. Updated Sep 16, 2021.

This document and any portion thereof may not be reproduced or used in any manner whatsoever without the express written permission of
Moxa Inc. Product specifications subject to change without notice. Visit our website for the most up-to-date product information.