Contec COM-1USBH, COM-1PUSBH User Manual

PC-HELPER

No-Is ola ted R S-232C Micro Con verter
for USB2.0

COM-1(USB)H

Isolated R S-232C Micro Con verter
for USB2.0

COM-1P(USB)H

User’s Guide

CONTEC CO., LTD.

First step guide

First st ep guide

Serial Number LabelWarranty Certificate

Warrant y Certifi cate

Micro converter Disk

Che ck Yo ur Package

Thank you f or purcha sing th e CONT EC pr o du c t .
The product consists of the items listed below.
Check, with the following list, that your package is complete. If you discover damaged or missing

items, contact your retailer.

Product Config uration List

- Micro converter (One of the following)
[COM-1(USB)H + gender changer …1] *1
[COM-1P(USB)H + gender changer …1] *1

- First step guide …1

- COM Setup Disk (Disk *2) …1

- Warranty Certificate …1

- Serial Number Label …1

*1: The converter is packed with the gender changer attached.
*2: The bundled disk contains the driver software and User’s Guide (this guide).

COM-1(USB)H, COM-1P(USB)H

i

Copyright

Copyright 2013 CONTEC CO., LTD . ALL RIGHTS RESERVED
No par t of this docu m e nt may be co pie d or reproduce d in any for m by a n y m eans wi thou t pri or writte n

consent of CONTEC CO., LTD.

CONTEC CO., LTD. makes no commitment to update or keep current the information contained in th is
document. The information in this document is subject to change without notice.

All relevant issues have been considered in the preparation of this document. Should you notice an
omission or any questionable item in this docume nt, please feel free to notify CONTEC CO., LTD.

Regardless of the foregoing statement, CONTEC assumes no responsibility for any errors that may
appear in this document or for results obtained by the user as a result of using this product.

Trademarks

MS, Microsoft, Windows and Windows NT are trademar ks of Microsoft Corporation. Other brand and
product names are trademarks of their respective holder.

COM-1(USB)H, COM-1P(USB)H

ii

Table of Contents

Check Your Package .................................................................................................................................... i

Copyright ..................................................................................................................................................... ii

Trademarks .................................................................................................................................................. ii

Table of Contents ....................................................................................................................................... iii

1. BEFORE USING THE P RODUCT 1

About the Product........................................................................................................................................ 1

Features ................................................................................................................................................. 1

Support Software.................................................................................................................................. 2

Customer Support ........................................................................................................................................ 2

Web Site................................................................................................................................................ 3

Limite d O n e -Yea r Warranty ...................................................................................................................... 3

How to Obtain Service ................................................................................................................................ 3

Liability ........................................................................................................................................................ 3

Safety Precautions ....................................................................................................................................... 4

Safety Information ............................................................................................................................... 4

Handling Precautions ........................................................................................................................... 4

Environment ......................................................................................................................................... 6

Inspection.............................................................................................................................................. 6

Storage .................................................................................................................................................. 6

Disposal ................................................................................................................................................ 6

2. SETUP 7

What is Setup? ............................................................................................................................................. 7

Installing the driver .............................................................................................................................. 7

Step 1 Setting the Hardware ....................................................................................................................... 8

Name of each parts .............................................................................................................................. 8

Step 2 Installing the Software .................................................................................................................... 9

Step 3 Installing the Hardware ................................................................................................................. 10

Connecting the converter .................................................................................................................. 10

Setting with the Found New Hardware Wizard .............................................................................. 11

Windows Vista ................................................................................................................................... 11

Windows XP....................................................................................................................................... 13

Step 4 Initializing the Sof tware ................................................................................................................ 15

Step 5 Checking Operations with the Diagnosis Program ..................................................................... 16

What is the Diagnosis Program ?....................................................................................................... 16

Check Method .................................................................................................................................... 16

Using the Diagnosis Program ........................................................................................................... 17

Step 6 Uninstalling the Driver Libraries ................................................................................................. 19

COM-1(USB)H, COM-1P(USB)H

iii

If your problem cannot be resolved ......................................................................................................... 19

3. EXTERNAL CONNECTION 21

Interface connectors .................................................................................................................................. 21

Directly Connecting the Product ...................................................................................................... 21

Connecting the Product with a Cable ............................................................................................... 22

Gender changer .................................................................................................................................. 22

4. FUNCTION 23

Communication Function ......................................................................................................................... 23

Serial Data Transmission .................................................................................................................. 23

RS-232C Control Lines ..................................................................................................................... 23

Setting the Baud Rate ........................................................................................................................ 23

Bus isolation [COM-1P(USB)H] ..................................................................................................... 23

Surge protection [COM-1P(USB)H] ................................................................................................ 23

5. ABOUT HARDWARE 25

LED disp lay ............................................................................................................................................... 25

Hardware specifications ........................................................................................................................... 26

Physical dimension ................................................................................................................................... 27

COM-1(USB)H, COM-1P(USB)H

iv

1. Before Usin g t h e Produ ct

1. Before Using the Product

This chapter provides information you should know before using the product.

About the Pr oduct

COM-1(USB)H is a micro converter for converting the USB port of PC into RS-232C serial
communications.

COM-1P(USB)H is an isolated micro converter for converting the USB port of PC into RS-232C serial
communications. COM-1P(USB)H is higher noise-resistant models with isolation between a PC and
bus line as well as a surge protection circuit for communication ports.

This product has one channel RS-232C communication port.
These products support a baud rate of up to 921,600bps a n d has separate 128-byte / 384-byte buffer

memory for transmit and receive. It also comes with a Windows driver, which allows boards to be
used as OS-standard COM ports.

This product supports CONTEC-defined driver library “API-PAC(W32)” that provide lo cal rou tin es.

Features

- Max. 921,600bps RS-232C Serial Communication
This product has one channel RS-232C-standard seria l port s. Baud rat e s fro m 300 to 921,600 bps can

be set by software. When data is transferred at the high speed, it may not be transferred normally,
depending on the use environment such as the external device and cable length used.

- Compatible to USB1.1/USB2.0 and not necessary to power this product externally as the bus power
is used.

Compatible to USB1.1/USB2.0 and capable to achieve high speed transfer at Full Speed (12Mbps).
Not necessary to power this product externally as the bus power of USB is used.

- Possibly used as Windows-standard COM ports, using the bundled driver library

Comes with a driver software that allows the products to be used under Windows in the same way as
COM ports on the PC. Under Windows, the product supports the OS-standard Win32 API
communication function as well as Visual Basic MSComm. In addition, supplies a diagnostic program
to confirm hardware operation and to perform a communication test with equipment.

- Isolation between channels and between PCs, surge protection for all signal lines
(For COM-1P(USB)H only)

Electric isolation is provided between channels and between PCs. T his prevents electric noise between
PCs and external circuits. As surge protection is provided on all signal lines, you can safely use the
products in environments where you are concerned about surges causing incorrect operation or damage
to the PC.

COM-1(USB)H, COM-1P(USB)H

1

1. Before Usin g t h e Produ ct

- Max. 127 converters can be installed as configured in the range COM1 - COM256.
Using a USB hub allows you to install up to 127 converters to a single PC.

COM1 - COM256 can be set using the device manager.

- Each channel is equipped with separate 128-byte / 384-by t e FIFO buffers for transmit and receive.
These are FIFO format, useful for high speed communications and to reduce the load to the CPU when

transmitting/receiving.
As the device manager can be used to enable/disable the use of FIFO and set the FIFO trigger size, you
can build a n opt imum s y s tem accordin g to you r us e.

- 9-pin D-SUB connector (female type) can be connected directly to a device such as a modem.
Use of a 9-pin D-SUB connector (female type) allows you to connect it to a device such as a modem

directly. It can also be connected to the cable of another 9-pin D -SUB connector (female type), if the
gender changer is connected. (*Installed before shipment)

- To suit your application, cables and connectors are available as optional
Straight cables (1.8m), cross cables (1.8m) and 9-pin D-SUB connectors (male or female type) for your

own cables are available as option al.

- The co ntrol l i ne for RS-232C can be controlled and monitored by software.
The control lines for RTS, CTS, DTR and DSR can be controlled and monitored using softwa re.

Support Software

Standard COM Driver Software
Under Windows, this software allows you to use the serial ports on the converter as if they were

sta ndard C OM ports o n t h e PC . Y ou can a d d additional micro converters up to a maximum of 127
CO M por ts.
Under Windows, the serial ports can be accessed using the standard Win32 API communication routines
(CreateFile( ), Write File ( ), ReadF ile( ), and SetCommS tate( ), etc.) The serial ports are also
compatible with the Visual Basic communication control (MSComm).
* API -SIO(98/PC) is not used.

COM-1(USB)H, COM-1P(USB)H

2

COM Setup Disk

(Bundled)

1. Before Usin g t h e Produ ct

Custo mer Suppo rt

CONTEC provides the following support services for you to use CONTEC products more efficiently
and comfortably.

Web Site

Japanese http://www.contec.co.jp/
English http://www.contec.com/
Chinese http://www.contec.com.cn/

Latest product information
CONTEC provides up-to-dat e information on products.
CONTEC also provides product manuals and various technical documents in the PDF.

Free download
You can download updated driver software and dif ferential files as well as samp le programs available in

several languages.

Note! For product information
Contact your retailer if you have any technical question about a CONTEC product or need its price,
delivery time, or estimate information.

Limited One-Year Warranty

CONTEC products are warranted by CONTEC CO., LTD. to be free from defects in material and
workmanship for up to one year from the date of purchase by the original purchaser.

Repair will be free of charge only when this device is returned freight prepaid with a copy of the
ori gi na l inv oice a n d a R e turn Merc handise Autho r izat ion t o the distribut or or th e CONTEC group
offi c e, fro m w h ich it was pu rchased.

This wa r ranty is n o t a p plicable f or scratc h es or n ormal wear, but only for the electronic circuitry and
original products. The warranty is not applicable if the device has been tampered with or damaged
through abuse, mistre atmen t, neg lect, or unreasonable use, or if the original invoice is not included, in
which case repairs will be considered beyond the warranty policy.

How to Obtain Service

For replacement or repair, return the device freight prepaid, with a copy of the original invoice. Please
obtain a Return Merchandise Authorization number (RMA) from the CONTEC group office where you
purchased before returning any product.

* No pr o duct will b e a c c e pted b y C ON TEC grou p w i thou t the RMA number.

Liability

The obligation of the warrantor is solely to repair or replace the product. In no event will the
warrantor be liable for any incidental or consequential damages due to such defect or consequences that
arise from inexperienced usage, misuse, or malfunction of this device.

COM-1(USB)H, COM-1P(USB)H

3

1. Before Usin g t h e Produ ct

DANGER

WARNING

C

AUTION

DANGER

CAUTION

Safety Precautions

Understand the following definitions and precautions to use the product safely.

Safety Info rmation

This document provides safety information using the following symbols to prevent accidents resulting
in injury or death and the destruction of equipment and resources. Understand the meanings of these
labels to operate the equipment safely.

DANGER indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could
res ul t in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury or in property damage.

Handling Precautions

Do not use the product where it is exposed to flammable or corrosive gas. Doing so may result in

an explosion, fire, electric shock, or failure.

- Do not strike or bend these pr o ducts .
Otherwise, th e s e products may malfunction, overheat, cause a failure or breakage.

- Do not touch these product's metal plated terminals (USB connector, D-SU B connector) with your
hands.
Otherwise, th e s e products may malfunction, overheat, or cause a failure.
If these products are touched by someone's hands, clean these products with industri al alcoho l.

- Make sure that your PC can supply ample power to all these products installed.
Insufficiently energized products could malfunction, overheat, or cause a failure.

- The specifications of these products are subject to change without notice for enhancement and
quality improvement.
Even when using these product s continuously, be sure to read the manual and understand the
contents.

- Do not modify these products. CONTEC will bear no responsibility for any problems, etc.,
resulting from modifying these products.

- Regardless of the foregoing statements, CONTEC is not liable f or any dama ges w ha tsoe ver
(including damages for loss of business profits) arising out of the use or inability to use these
CONT EC pr o ducts or the information contained herein.

- It ma y cause a trouble in recognizing and operating the device according to the kind of USB hub.
If you use the USB hub, we encourage you to take advantage of the CONTEC’s product loan
service to confirm operation before purchasing.

COM-1(USB)H, COM-1P(USB)H

4

1. Before Usin g t h e Produ ct

Name

Make r

Turn

Quantity

Installation Site

on the COM ca ble at product side and

E04SR170730A

SEIWA

1 1 on USB cabl e at P C si de

This equipment has been tested and found to compl y with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not i nstall ed and
used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.

NOTE

FCC WARNING

Changes or modifications not expressly approved by the party responsible for compliance could void
the user's authority to operate the equipment.

- COM-1P(USB)H Regarding “FCC PART 15 Class A Notice”
Thes e products have acquired the above-mentioned standard.
However, a sufficient margin may not be secured for the standard. In this case, use a ferrite core
(SEIWA E04SR301334 or a compatible product) for the COM cable (this product’s side).
When attaching the ferrite core, coil it around once near the connector while leaving it open, and
then close it.

- Regarding “CE EMC Directive Notice”
The ferrite core must be installed in interface connecting cable so that this product may suit the
above-mentioned standard.

E04SR301334 SEIWA 2 1

device’s side

* Equivalent product can also be used.

Image diagram

Ferrite core

Cable

TURN: 1

TURN: 2

FCC PART 15Class A Notice

COM-1(USB)H, COM-1P(USB)H

TURN: 3

TURN: 4

5

1. Before Usin g t h e Produ ct

- The connection part o

f c

onne

cto

r

have no stain or corr

osi

on.

Environment

Use this product in the following environment. I f used in an unauthorized environment, the board may
overheat, malfunction, or cause a failure.

Operating temperature

0 - 50°C

Operating humidity

10 - 90%RH (No condensation)

Corrosive gases

None

Floa t i ng du st pa rticle s

Not to be excessive

Inspection

Inspect the product periodically as follows to use it safely.

Storage

When storing this product, keep it in its original packing form.
(1) Put the produ c t in the s tora g e bag.
(2) Wrap it in the packing material, then put it in the box.
(3) Store the package at room temperature at a place free from direct sunlight, moisture, shock,

vibration, magnetism, and stati c ele c tri c it y .

Disposal

When disposing of the product, follow the disposal procedures stipulated under the relevant laws and
muni c ipal ordinanc e s .

6

COM-1(USB)H, COM-1P(USB)H

2. Setup

2. Setup

This chapter explains how to set up the converter.

What is Setup?

Setup means a series of steps to take before the product can be used.
Different steps are required for software and hardware.

Installing the driver

This section enables you to prepare the software and hardware by operating in accordance with each
step in this chapter using the bundled d isk. Taking the following steps sets up the software and
hardware. You can use the diagnosis program later to check whether the software and hardware
function normally.

Step 1 Setting the Hardware
Step 2 Installing the Hardware
Step 3 I nitializi ng the Software
Step 4 Checking Operations with the Diagnosis Program

If Setup fails to be performed normally, see the “Setup Troubleshooting” section at the end of this
chapter.

COM-1(USB)H, COM-1P(USB)H

7

2. Setup

In

te

rf

ace

c

o

nn

ec

t

or

D-

S

U

B

9

p

i

n

(F

e

m

al

e

)

Interf

ace connec

tor

U

SB

T

ype

A

Step 1 Setting the Hardware

This section describes how to setup the converter and connect it to your PC.

Name of each parts

COM-1(USB )H, COM-1P(USB)H

Figure 2.1. Name of each parts

COM-1(USB)H, COM-1P(USB)H

8

2. Setup

Step 2 Installing the Software

Install s o ft wa re.
Run [\USB\Com1Usb\Setup.exe] from the supplied bund l ed disk
(1) The scr eens bel ow show the ins tal lat io n. Click [next].

(2) Accept the license agreement, then click [Next>].

(3) The setup is completed

COM-1(USB)H, COM-1P(USB)H

9

2. Setup

U

SB p

ort

s

CAUTION

Step 3 Installing the Hardware

Under Windows, information about the converter needs to be detected by the OS. This is called
hardwa r e ins tallati o n.

When using multiple converters, install one at a time and complete setup for the previous
converter before starting to install the next converter.

Connecti n g t h e convert er

(1) Turn on the power to the PC before connecting the p roduct .
(2) When the PC has been up and running, plug the USB interface connector to a USB port in the PC.
The converter can also be connected to the PC via a USB hub.

Figure 2.2. Connecting the converter

It may cause a trouble in recognizing and operating the device according to the kind of USB hub.
If you use the USB hub, we encourage you to take advantage of the CONTEC’s product loan
service to confirm operation before purchasing.

COM-1(USB)H, COM-1P(USB)H

10

2. Setup

Setting with the Found New Hardware Wizard

Windows Vi sta

(1) “Found New Hardware” Wizard is open. Click “Locate and install driver software”.

(2) When the “Found New Hardware” windows is displayed, insert the accompanying bundled

disk ”COM Setu p Disk” into the CD-ROM drive . After a while, the device installation process
begins.

COM-1(USB)H, COM-1P(USB)H

11

2. Setup

(3) Click “Browse my computer for driver software (advanced)”.

(4) Click “Next”

You have now finished installing the hardware.

COM-1(USB)H, COM-1P(USB)H

12

2. Setup

* COM -1(USB)H

Windows XP

(1) The “Found New Hardware Wizard” will b e started .
(2) Select “Ins tall fro m a li st or specific location[Advanced]”, then click on the [Next] button.

or
COM-1P(USB)H
is displayed.

(3) Specify that folder on the bundled disk which contains the setup information (INF) file to register

the converter.

Source folder is “(CD-ROM drive letter)\USB\COM1USB”.

COM-1(USB)H, COM-1P(USB)H

* Be sure to uncheck [Search removable media (floppy, disk)].

13

2. Setup

(4) In Windows XP, the Hardware Wizard displays the following alert dialog box when you have

loca ted t h e IN F fil e . Thi s di alog bo x a p p ea rs, on ly ind icat ing that t h e rele vant dr iver has no t
passed Windows Logo testing, and it can be ignored without developing any problem with the
operation of the terminal.

In this case, click on the [Continue Anyway] button.

* COM -1(USB)H
or
COM-1P(USB)H
is displayed.

When completing the installation, push the completion button and close the wizard.
(5) After that, do the same operation so that you can confirm the COM port.

You have now finished installing the hardware.

COM-1(USB)H, COM-1P(USB)H

14

2. Setup

Step 4 Initializing the Software

The COM ports are already assigned by the hardware installation step.
Run Device Manager as described below if you wish to view or modify the COM port settings.

Start Device Manager
(1) Select "System" from "Control Panel" and start [Device Manager].

* COM -1(USB)H
or
COM-1P(USB)H
is displayed.

* COM -1(USB)H
or
COM-1P(USB)H
is displayed.

(2) Make sure that the detected USB device is listed in the "Universal Serial Bus controllers" folder.
(3) Check that the new COM ports are displayed in the [Ports] folder.

Updating the Settings
(1) If you wish to change a port number, open the properties page for the port and click the

[Advanced…] button under [Port Settings].

(2) Use the [COM Port Number] combo box to modify the COM port number.

You hav e now fin i shed i nstal ling the initial settin g of Software.

COM-1(USB)H, COM-1P(USB)H

15

2. Setup

Step 5 Checking Opera tions wi th the Diagnosis Program

Use the diagnosis program to check that the terminal and driver software work normally, thereby you
can confirm that they have been set up correctly.

What is the Diagnosis P rog ram?

These programs perform some simple checks on the terminal operation. Two programs are provided.

Terminal program (CTstCom.exe)

Data entered from the keyboard is sent directly from the port. The function of the program is
equivalent to the Hyper Terminal program provided with Windows.

Serial Communications Diagnostic Prog ram ( C ommChk.exe)

Performs actual communications and indicates whether the results are correct or not (error).
The following describes the procedure for testing using the serial communications diagnostic program

(CommChk.exe).

Check Method

Obtain an RS-232C crossed cable or a loopback connector. If using a loopback connector, you can
perform the check using a single COM port. The figure below shows the wiring connections for a
loopback connector.

COM-1(USB)H, COM-1P(USB)H

16

2. Setup

Using the Diagnosi s Prog ram

Starting the Diagnosis Program
Run [\Utility\CommChk\CommChk.exe] from the bundled disk

Communication Settings
COM S et up: Specify the number of the COM port you wish to test.

If connecting two COM ports via a cross cable, specify the respective COM ports in
[Device1] and [Device2].
When performing loopback communications on a single COM port, set the same port
number in both [Device 1] and [Device 2].

Communication Settings: Specify the [Bits / Second], [Data bits] and other settings you wish to use.

COM-1(USB)H, COM-1P(USB)H

17

2. Setup

Start te st
Click the [Start] button to start the test using the specified conditions.

View test result
The tes t re sult is displayed in the [Message] window.

A successful completion message appears if the test completed OK.

COM-1(USB)H, COM-1P(USB)H

18

2. Setup

Step 6 Uninstalling the Driver Libraries

To uninstall COM-1/1P/1PD(USB)H Drivers, follow the procedure below.
(1) Click on the [Start] button on the Windows taskbar. From the Start Menu, select “Settings” –

“Control Panel”.

(2) Double-click on “Add and Remove Programs” in the Control Panel.
(3) Select “CONTEC COM-1/1P/1PD(USB)H Driver s VerX.XX” from the displayed application and

then click on the [Change/Remove] button. Follow the on-screen instructions to uninstall the
function libraries.

* X.XX shows the version of driver.

If your problem cannot be resolved

Contact your retailer.

COM-1(USB)H, COM-1P(USB)H

19

2. Setup

COM-1(USB)H, COM-1P(USB)H

20

3. Externa l Connection

1 2 3 4 5

6 7 8 9

12345

678

9

DTR (Data Terminal Ready)

TxD (Transmit Data)

RxD (Receive Data)

SG (Signal Ground)

DCD(Data Carrier Detect)

CTS (Clear to Send)
RTS (Request to Send)
DSR (Data Set Ready)

RI (Ring Indicator)

With the gender changer attached With the gender changer detached

TxD

RxD

RTS
CTS

DTR

DSR

SG

TxD

RxD
RTS
CTS

DTR

DSR

SG

(Request toSend)

(Clearto Send)

Data Terminal Ready)

(Data Set Ready)

Signal Ground)

External device

(TransmitData)

(Receive Data)

External deviceConverter

3. External Connection

This chapter describes the interface connectors on the converter.
Check the information available here when connecting an external device.

Interface connectors

Figure 3.1. Pin assignment of interface connectors

Direct ly C on n ect i ng the Product

The RS-232C interface of this product uses a 9 pin D-SUB (female) connector.
You can connect the product directly to a device such as a modem if it has a D-SUB 9 pin (male)

connector. For connection to such a device, detach the gender changer.
Note, however, that the product cannot cross-connect directly such as COM port on a PC to a device

even thou g h the d e v ice has a 9 pin D-SUB (male) connector.

Figure 3.2. Example Connection to a Modem (Cableless)

COM-1(USB)H, COM-1P(USB)H

21

3. Externa l Connection

TxD

RxD

RTS

CTS

DTR

DSR

SG

TxD

RxD

RTS

CTS

DTR

DSR

SG

External device

Gender c

hanger

T

xD

RxD

RTS

C

TS

DTR

DSR

SG

TxD

RxD

RTS

CTS

DTR

DSR

SG

Gender changer

External device

*

Male Mal

e

G

ender c

hanger

Converter

D-SUB 9 pin (Female)

CAUTION

Connecting the Product wit h a Cable

Use a cable when you use the gender changer to connect the product to the 9 pin D-SUB (female)
RS-232C interface of the external device or when a straight connection cannot be made.

The cable to be used may be different depending on the device to connect the product to. Check the
specifications of the external device, then prepare the straight type or cross (reverse) type of cable
depending on the cable type (specifications). I f signal conductors in the connectors require treatment,
treat them according to the specifications.

Figure 3.3. Example Connection to a PC Figure 3.4. Example Connection to a device
(gender changer + cross cable)

Figure 3.5. Example use of gender changer

Connection with conductors wired incorrectly can result in failures in the product and external

device.

Gender changer

The interface conn ecto r of this product is a 9 pin D-SUB (female) connector.
The product is shipped with the gender changer attached to the interface connector. When connecting

the product wi th a screw-l ocked (female) cable, leave the gender changer attached to the connector.
When connecting the product to a device having a 9 pin D-SUB (male) connector using a straight cable,

remove the gender changer and connect the product directly to the device.

COM-1(USB)H, COM-1P(USB)H

22

4. Function

4. Function

This section describes the functions of the converter.

Communication Function

Serial Data Tran smis sion

Sends and receives data in accordance with the RS-232C standard.

RS-232C Cont rol Line s

All ports include the RTS, CTS, DTR and DSR control lines.
The lines can be controlled or monitored by software from the application.

Setting the Baud Rate

This converter can set the following baud rate using the software.
Baud Rate: 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400,

57600, 115200, 230400, 460800, 921600bps

Bus isolation [COM-1P(USB)H]

It is electrically isolated between the PC to be installed and the remote device.
Isolation between buses, prevents electrical disturbance between the PC and an external circuit and

inter-channel interference as well.
The converter can therefore be used comfortably even when line noise can be easily generated to

seemingly cause the PC to malfun c t ion or break.

Surge protection [COM-1P(USB)H]

As the RS-232C control lines are all surge-protected, you can use the product without anxiety about
surges which can cause the PC to malfunction or be damaged.

COM-1(USB)H, COM-1P(USB)H

23

4. Function

COM-1(USB)H, COM-1P(USB)H

24

5. About Hardw a re

LED name

LED displa y content

ON … Power ON

OFF … Power OFF

Blinking … Transmitting data *

OFF … Not transmitting data or not connected

TxD
RxD
POWER

5. About Hardware

LED display

Table 5.1. Function list

POWER (green)

RxD (yellow) Blinking … Receiving data *

OFF … Not rece iving data or not con nect ed

TxD (yellow)

Figure 5.1. LED display

*

If you forget the COM port number of this product, perform communication via specific COM ports and check the
LEDs on the prod uct to identify its C OM port numbe r.

COM-1(USB)H, COM-1P(USB)H

25

5. About Hardw a re

Item

COM-1(US B)H

COM-1P(USB)H

Number of channels

1 channel

I/O specification

RS-232C

Isolated s pecification

Dielectric strength

Transfer method

Asynchronous s erial transfe r

Baud rate

300 - 921,600bps *1*2

Data length

Parity check

and USB. Sending : 128b yte / rece iving: 384byte (by t he vie w of PC)

Connecting distance

Within 15m

Power consu mpti on

5VDC 50mA (Max.) * 3

5VDC 280mA (Max.)

Operati ng conditio n

speed

Cable length

1.8m

CE Marking (EMC Directi ve Class A, RoHS Directive)

(inch screw th reads) x 2

Weight

10g

Hardware specifications

Table 5.2. Specifications

- Bus isolation

- 300VDC

7, 8 bit / 1, 2 stop bit

Even, Odd, Non-parity

FT232BL

Loading LSI

Mountin g the FIF O memory as the common buffer of RS-422A/RS-485 communi cation

Connector
specification

Operation guaranteed
voltage

USB bus specifi cation USB Specification 1.1/2.0 standard

Power s upply Only b us powe r

USB transmission

Physical dimension
(mm)

Weight

Standard

*1 Data transmission at high speed may not be perfo rmed n ormally depe nding on the e nviro nment includi ng the t ype of

status of connected material of cable and environment.

*2 These items can be set by software.

*3 It doesn't correspond to Low-power Bus-powered Function (4.4V operation).

USB side : USB A connector
RS-232C side : 9 pin D-SUB connector (female)

5V±5% *3

0 - 50°C, 10 - 90%RH(No condensation)

12Mbps (full s peed mode)

78.3(W) x 20.5(D) x 3 6.5(H )

91.0(W) x 20.5(D) x 3 6.5(H) (Whe n connecting gender changer)

130g
140g (When c onnecti ng gender changer)

VCCI Class A, FCC Class A,

Table 5.3. Gender changer specification

Engagement 9 pin D-SUB male, thumb screw : UNC#4-40

Wiring Straight over entire length

Physical di mension (mm) 18.0(W) x 12 .5(D) x 31.0(H)

COM-1(USB)H, COM-1P(USB)H

26

5. About Hardw a re

7

8.

3

2

0

.

5

36.5

[mm

]

5

9

.

8

#

4-40

UN

C (i

nc

h sc

rew)

Physical dimension

Figure 5.2. Physical dimension

COM-1(USB)H, COM-1P(USB)H

27

COM-1(USB)H

COM-1P(USB)H

User’s Guide

CONTEC CO., LTD. November 2016 Edition

3-9-31, Himesato, Nishiyodogawa-ku, Osaka 555-0025, Japan
Japanese http://www.contec.co.jp/
English http://www.contec.com/
Chinese http://www.contec.com.cn/

No par t of this docu m e nt may be co pie d or reproduce d in any for m by a n y m eans wi thou t pri or writte n
consent of CONTEC CO., LTD. [11252016]

[11162004] Management No. A-46-832
[11252016_rev9] Parts No. LYDG457