Rockwell Automation 1747-SN User Manual

Remote I/O Scanner

(Catalog Number 1747-SN)

Installation Instructions

Inside ................................................................................................ page

For More Information ............................................................................... 2

Hazardous Location Considerations ........................................................ 3

Environnements dangereux ..................................................................... 3

Overview .................................................................................................. 4

Hardware Features .................................................................................. 5

Required Tools and Equipment ................................................................ 8

Installation ............................................................................................... 8

RIO Link Wiring ...................................................................................... 10

Specifications ........................................................................................ 12

Publication 1747-IN060D-EN-P - November 2002

2 Remote I/O Scanner

For More Information

For Refer to this Document Pub. No.

A more detailed description on how to
install, configure, and operate your Remote
I/O Scanner.

A more detailed description on how to
install and use your modular
SLC 500 system

A reference manual that contains status file
data and instruction set information for SLC
500 processors.

If you would like a manual you can:

• download a free electronic version from the internet:

www.theautomationbooks tore.com

• purchase a printed manual by:

– contacting your local distributor or Rockwell Automation representative
– visiting www.theautomationbookstore.com and placing your order
– calling 1.800.963.9548 (USA/Canada) or

001.330.725.1574 (Outside USA/Canada

Remote I/O Scanner
User Manual

SLC 500 Modular Hardware Style
Installation and Operation Manual

SLC 500 Instruction Set Reference
Manual

1747-6.6

1747-UM011

1747-RM001

Publication 1747-IN060D-EN-P - November 2002

Remote I/O Scanner 3

Hazardous Location Considerations

This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or
non-hazardous locations only. The following WARNING statement applies to use in
hazardous locations.

WARNING

!

EXPLOSION HAZARD

• Substitution of components may impair suitability for Class

I, Division 2.

• Do not replace components or disconnect equipment

unless power has been switched off.

• Do not connect or disconnect components unless power

has been switched off.

• All wiring must comply with N.E.C. article 501-4(b).

Environnements dangereux

Cet équipement est conçu pour être utilisé dans des environnements de Classe I,
Division 2, Groupes A, B, C, D ou non dangereux. La mise en garde suivante
s’applique à une utilisation dans des environnements dangereux.

WARNING

!

DANGER D’EXPLOSION

• La substitution de composants peut rendre cet équipement

impropre à une utilisation en environnement de Classe I,
Division 2.

• Ne pas remplacer de composants ou déconnecter

l'équipement sans s'être assuré que l'alimentation est
coupée.

• Ne pas connecter ou déconnecter des composants sans

s'être assuré que l'alimentation est coupée.

Publication 1747-IN060D-EN-P - November 2002

4 Remote I/O Scanner

Overview

The Remote I/O (RIO) Scanner, 1747-SN, enables communication between an
SLC™ processor and remotely located 1746 I/O chassis and other RIO-compatible
Allen-Bradley operator interface and control devices. The 1747-SN scanner
communicates with remote devices using the A-B Remote I/O link. The RIO link
consists of a single master (scanner) and multiple slaves (adapters). Communication
between devices occurs over twisted-pair cable with the devices daisy-chained
together. Maximum distance for remote communication is 3,048m (10,000 ft.). The
scanner is compatible with any standard RIO adapter device.

The SLC processor transfers a maximum of 4 logical racks (32 input and 32 output
image words) of discrete remote I/O data into the SLC input and output image files.
You can adjust the size of the scanner image files during configuration of your SLC
system so that the scanner only transfers the discrete I/O data required by your
application program. The 1747-SN Series B or later RIO Scanner can be configured
to transfer up to 64 words of data to a remote device via block transfer. Refer to
publication 1747-6.6, Remote I/O Scanner User Manual, for information on
configuration, programming, and block transfers.

The SLC 500™ processor (SLC 5/02 or higher) supports multiple scanners in its local
I/O chassis. The maximum number is dependent on the following:

• backplane power requirements (power supply dependent)

• SLC 500 processor I/O data table limit (4,096 input and output bits)

• processor memory to support the application (SLC processor dependent)

SLC 5/02 or

later processor

Local SL C Chassis

Dataliner™ Message

Display (Adapter/Slave)

RIO Scanner

(Master of the RIO Link)

PanelView™ Operator Terminal

1747-ASB Module

(Adapter/Slave)

Remote Chassis

(Adapter/Slave)

Remote Expansion Chassis

Redi PANEL™

(Adapter/Slave)

Publication 1747-IN060D-EN-P - November 2002