Comtrol DB25 Manuale utente

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Comtrol Cable User Guide

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Trademark Notices

Comtrol and DeviceMaster are trademarks of Comtrol Corporation.

PortVision is a registered trademark of Comtrol Corporation.

Microsoft and Windows are registered trademarks of Microsoft Corporation in the United States and/or other

countries.

Ethernet is a registered trademark of Digital Equipment Corporation, Intel, and Xerox Corporation.

Other product names mentioned herein may be trademarks and/or registered trademarks of their respective

owners.

Second Edition, August 16, 2005

Comtrol Corporation makes no representations or warranties with regard to the contents of this document or

to the suitability of the Comtrol product for any particular purpose. Specifications subject to change without

notice. Some software or features may not be available at the time of publication. Contact your reseller for

current product information.

Document Number: 2000430 Rev B

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[Documentation number: 2000430 Rev B] 3

Contents

Getting Started .......................................................................................................................5

Overview.......................................................................................................................................................... 5

RS-422 Pinouts ............................................................................................................................................... 5

Standard Comtrol Cables ............................................................................................................................ 5

DTE versus DCE............................................................................................................................................. 6

RS-232 DTE to DCE ................................................................................................................................... 6

Straight-Through Cables ..................................................................................................................... 6

RS-232 DTE to DTE ................................................................................................................................... 6

Null-Modem Cables.............................................................................................................................. 6

Data-Only Null-Modem Cables ........................................................................................................... 7

Control Loopback Cables ..................................................................................................................... 7

RS-422 to DTE Cables ................................................................................................................................ 7

Shielded vs. Unshielded ............................................................................................................................... 7

Building Cables for RocketPort Products........................................................................9

Overview.......................................................................................................................................................... 9

DB9 Serial Cables and Loopback Plugs ................................................................................................... 9

Requirements .............................................................................................................................................. 9

DB9 Pinouts ................................................................................................................................................ 9

DB9 Loopback Plugs................................................................................................................................. 11

RS-232 Female Loopback Plug .......................................................................................................... 11

RS-422 Loopback Plug ....................................................................................................................... 11

DB9 Null-Modem Cables.......................................................................................................................... 11

RS-232 Null-Modem Cable ............................................................................................................... 11

RS-422 Null-Modem Cable ................................................................................................................ 11

DB9 Straight-Through Cables ................................................................................................................. 12

RS-232 Straight-Through Cable........................................................................................................ 12

DB25 Serial Cables and Loopback Plugs ............................................................................................... 12

Requirements ............................................................................................................................................ 12

DB25 Pinouts ............................................................................................................................................ 12

DB25 Loopback Plugs............................................................................................................................... 14

RS-232 Female Loopback Plug .......................................................................................................... 14

RS-422 Female Loopback Plug .......................................................................................................... 14

RS-232 Male Loopback Plug .............................................................................................................. 14

RS-422 Male Loopback Plug .............................................................................................................. 14

RJ11 Serial Cables and Loopback Plugs................................................................................................ 15

Requirements ............................................................................................................................................ 15

RJ11 Pinouts............................................................................................................................................. 15

RJ11 Loopback Plugs................................................................................................................................ 15

RJ45 Serial Cables and Loopback Plugs................................................................................................ 16

Requirements ............................................................................................................................................ 16

RJ45 Pinouts............................................................................................................................................. 16

RJ45 Pinouts for Octacable Interface Module (RS-232 Port)........................................................... 16

RJ45 Null-Modem Cables......................................................................................................................... 17

RS-232 Null-Modem Cable ................................................................................................................ 17

RJ45 Straight-Through Cables ................................................................................................................ 17

RS-232 Straight-Through Cable........................................................................................................ 17

RJ45 Loopback Plugs................................................................................................................................ 18

RS-232 Loopback Plug ....................................................................................................................... 18

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4 [Documentation number: 2000430 Rev B]

Building Cables for DeviceMaster Products..................................................................19

Overview........................................................................................................................................................ 19

DB9 Serial Cables and Loopback Plugs ................................................................................................. 19

Requirements............................................................................................................................................ 19

DB9 Pinouts ............................................................................................................................................. 20

DB9 Loopback Plug .................................................................................................................................. 20

RS-232 Loopback Plug ....................................................................................................................... 20

RS-422 Loopback Plug ....................................................................................................................... 20

DB9 Null-Modem Cable............................................................................................................................ 21

RS-232 Null-Modem Cable ................................................................................................................ 21

RS-422 Null-Modem Cable ................................................................................................................ 21

DB9 Straight-Through Cable ................................................................................................................... 21

RS-232 Straight-Through Cable for DeviceMaster Serial Hub ....................................................... 21

RS-232 and RS-485 Straight-Through Cable for DeviceMaster AIR, PRO, RTS or UP................. 22

RJ45 Serial Cables and Loopback Plugs................................................................................................ 22

RJ45 Pinouts ............................................................................................................................................. 22

RJ45 Null-Modem Cable .......................................................................................................................... 23

RS-232 Null-Modem Cable ................................................................................................................ 23

RS-422 Null-Modem Cable ................................................................................................................ 23

RJ45 Straight-Through Cable.................................................................................................................. 23

RS-232 and RS-485 Straight-Through Cable ................................................................................... 23

RJ45 Loopback Plug ................................................................................................................................. 24

RS-232/RS-422 Loopback Plug .......................................................................................................... 24

RS-485 Test Cable .................................................................................................................................... 24

Building Basic Cables..........................................................................................................25

Overview........................................................................................................................................................ 25

RocketPort 4/8/16 Interface Cable Assembly Wire Detail .................................................................. 25

RocketPort 32 ISA, PCI 32, uPCI 16/32, and CPCI 16 Interface Cable Assembly Wire Detail ... 26

DB25 Interface to Controller Pinouts for RocketPort ISA/PCI 4, 8 and 16-ports ........................ 27

Wire ........................................................................................................................................................... 27

Shield......................................................................................................................................................... 27

Voltage Rating .......................................................................................................................................... 27

Capacitance ............................................................................................................................................... 27

Shell........................................................................................................................................................... 27

78-pin Connectors........................................................................................................................................ 28

78-pin Connector for RS-232 Quadcable/Octacable Controllers ............................................................ 28

78-pin Connector for RS-422 Quadcable/Octacable Controllers ............................................................ 29

Cable Adapters......................................................................................................................31

Overview........................................................................................................................................................ 31

RJ45 to DB9 Connector Pinouts for DeviceMaster and RocketPort............................................... 31

8J RJ11 to Standard DB25 (Null-modem Configuration)................................................................... 32

8J RJ11 to Standard DB9 (Null-modem Configuration)..................................................................... 32

Technical Support................................................................................................................33

Index........................................................................................................................................35

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Getting Started [Documentation number: 2000430 Rev B] 5

Getting Started

Overview

This document describes how to build cables for Comtrol products.

This chapter describes the standard Comtrol cables and the basic types of devices

that can connect to Comtrol products. It also explains the difference between

shielded and unshielded cables. This chapter covers the following topics:

•RS-422 Pinouts

•Standard Comtrol Cables

•DTE versus DCE

•Shielded vs. Unshielded

RS-422 Pinouts

RS-422 pinouts are not the same across Comtrol product lines. For example, a DB9

loopback plug designed for a RocketPort model will not work on a DeviceMaster

model. When you build a cable make sure that you use the correct pinouts for the

Comtrol product. The following sections describes the valid pinouts and cabling for

each product:

•Building Cables for RocketPort Products

•Building Cables for DeviceMaster Products

Standard Comtrol Cables

The following table displays standard cables for RocketPort products.

Comtrol Product Cable Type Connector

Type

Part Number Cable Length

New Part

Number

Old Part

Number Feet Meters

RocketPort 4,8,16-port

ISA/PCI, and 8 port

uPCI cables

Interface Cable DB25 to

DB25 4000025 23601A 3’ 0.91

RocketPort Rackmount

Cables Interface Cable DB25 to

DB25 4000027 23607A 10’ 3.05

RocketPort ISA 32-port,

PCI, uPCI 16/32-port,

CPCI 16-port cables

Interface Cable DB25 to

DB26 4000030 23701A 3’a

a. This is a 3 foot cable. If necessary, you can connect a 10 foot DB25 to DB25 cable to extend

the length of the cable.

0.91

Octacable DB25 male 4000032 23801-0 3.5’ 1.06

Octacable DB9 male 4000033 23901-7 3.5’ 1.06

Quadcable DB25 male 4000034 N/A 3.5’ 1.06

Quadcable DB9 male 4000035 N/A 3.5’ 1.06

Octacable RJ45 4000036 N/A 10” 0.25

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6 [Documentation number: 2000430 Rev B] Getting Started

DTE versus DCE

Most devices, except modems, are Data Terminal Equipment (DTE) devices.

Modems are Data Communication Equipment (DCE) devices. Comtrol ports are

configured as DTE.

How you build a cable depends on which device your are connecting to (DTE or

DCE). For example, you need a null-modem cable to connect the COM ports (com1

or com2) on the computer or the DeviceMaster ports to printers, terminals, bar

code readers or DNC equipment. If you are connecting a DTE device to a DCE

device you need a straight-through modem cable.

•Straight-through cable (DTE to DCE) - Connects TxD to TxD and RxD to

RxD.

•Null-modem cable (DTE to DTE) - Connect TxD to RxD and RxD to TxD.

RS-232 DTE to DCE This topic describes how to build a straight-through cable. Use a straight-through

cable to connect to a DCE device.

Straight-Through

Cables

The following figure shows the most common types of DTE to DCE cables. This

cable configuration works with most modems and is generally called a modem

cable.

Note: If you have a DTE to DCE interface but are uncertain as to which signals

are required, you can use a full 25-wire cable. The 25-wire cable is

constructed as shown in the following cable example, but the remaining

pins are not used.

RS-232 DTE to DTE This topic describes how to build a null-modem cable for connecting to a DTE

device.

Null-Modem Cables If you need RTS-CTS/DTR-DSR hardware flow control, you can use the pinouts

provided in the following example.

Note: If the wiring on the peripheral device differs from the one shown below,

adjust the pinouts accordingly. Refer to the manufacturer’s installation

document if you need help with connector pinouts or cabling for the

peripheral device.

RocketPort Connector

Signal

TxD

RxD

RTS

CTS

DSR

GND

DCD

DTR

Name

DB25

Signal

TxD

RxD

RTS

CTS

DSR

GND

DCD

DTR

Name

Pins DB9

Pins DB25

Pins

Customer DCE Connector

RJ45

Pins RJ11 DB9

3 3

4 2

N/A 7

N/A 8

N/A 6

2 5

5 1

1 4

Pins Pins

RocketPort Connector

Signal

TxD

RxD

RTS

CTS

DSR

GND

DCD

DTR

Name DB25

Signal

RxD

TxD

CTS

RTS

DTR

GND

DCD

DSR

Name

Pins DB9

Pins DB25

Pins

Customer DTE Connector

RJ45

Pins RJ11 DB9

3 3

4 2

N/A 7

N/A 8

N/A 6

2 5

5 1

1 4

Pins Pins

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Getting Started [Documentation number: 2000430 Rev B] 7

Data-Only Null-Modem Cables

Data-Only Null-

Modem Cables

If no hardware flow is required, use the pinouts in the following figure. If you are

using a 3-wire cable and you need control, use software flow control.

Control Loopback

Cables

Some equipment may not require hardware handshaking. However, they may

require that certain control signals are active before sending data.

RS-422 to DTE

Cables

Most RS-422 communication links do not use hardware handshaking or signal ground lines.

The following figure shows twisted-pair transmission lines.

Shielded vs. Unshielded

If the Comtrol device falls within the limits for a Class A computing device

established by the FCC, the serial cables used to connect the Comtrol device to the

external devices must be shielded. The cable shield must connected to the chassis

ground at both ends to reduce EMI. If the cable shield is not connected to the

chassis ground at both ends, the EMI radiation from your system may exceed the

limits allowed for FCC class A equipment. You can use an isolation device if you

experience problems with ground loops.

Refer to the statement on electromagnetic compliance in the Comtrol hardware

document to determine the FCC class for your Comtrol product.

RocketPort Connector

Signal

TxD

RxD

GND

Name DB25

Signal

RxD

TxD

GND

Name

Pins

DB9

Pins DB25

Pins

Customer DTE Connector

RJ45

Pins RJ11 DB9

3 3

4 2

2 5

Pins Pins

RocketPort Connector

Signal

TxD

RxD

RTS

CTS

DSR

GND

DCD

DTR

Name DB25

Signal

RxD

TxD

RTS

CTS

DSR

GND

DCD

DTR

Name

Pins DB9

Pins DB25

Pins

Customer DTE Connector

RJ45

Pins RJ11 DB9

3 3

4 2

N/A 7

N/A 8

N/A 6

2 5

5 1

1 4

Pins Pins

RocketPort Connector

TxD+

RxD+

Name DB25

Signal

RxD+

TxD+

Name

Pins

Customer DTE

TxD- 25

RxD- 17

Signal

RxD-

TxD-

GND 7 GND

Connector

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8 [Documentation number: 2000430 Rev B] Getting Started

Shielded vs. Unshielded

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Building Cables for RocketPort Products [Documentation number: 2000430 Rev B] 9

Building Cables for RocketPort

Products

Overview

This chapter describes the cables and pinouts for RocketPort products and covers

the following topics:

•DB9 Serial Cables and Loopback Plugs

•DB25 Serial Cables and Loopback Plugs

•RJ11 Serial Cables and Loopback Plugs

•RJ45 Serial Cables and Loopback Plugs

DB9 Serial Cables and Loopback Plugs

This section describe how to build your own null-modem or straight-through DB9

serial cables.

Requirements Refer to the manufacturer’s installation guide if you need help with connector

pinouts or cables for the peripheral device.

DB9 Pinouts This topic describes DB9 pinouts for the following RocketPort Products:

•TheRocketPortPCI422 supports RS-422 mode, Quadcable, Octacable, and 8-

port box interface equipped with male DB9 connectors.

• The RocketPort Plus Universal PCI 422 supports RS-422 mode, Quadcable,

Octacable, an 8-port box interface equipped with male DB9 connectors, and

the 8-port SMPTE 207M interface module, which is equipped with female DB9

connectors.

• RocketPort PCI supports RS-232 and RS-422 mode, and Quadcable and

Octacable available with DB9 connectors on the fanout cable.

• RocketPort Universal PCI and Rocketport Plus Universal PCI support RS-232

and RS-422 mode.

Note: Ring Indicator (RI) is only supported on Quad/Octacable cards.

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