Installation Instructions
Remote I/O Scanner
(Catalog Number 1747-SN)
Inside ................................................................................................page
Hazardous Location Considerations ........................................................ 2
Environnements dangereux ..................................................................... 2
Overview .................................................................................................. 3
Hardware Features .................................................................................. 4
Required Tools and Equipment ................................................................ 6
Installation ............................................................................................... 7
RIO Link Wiring ........................................................................................ 8
Specifications ........................................................................................ 10
For More Information ............................................................................. 11
Publication 1747-IN060B-EN-P - June 2001
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Remote I/O Scanner
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 or the area is known to be non-hazardous.
•
Do not connect or disconnect components unless power has been switched off or the area is known to be non-hazardous.
•
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-IN060B-EN-P - June 2001
Remote I/O Scanner
3
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
3,048 m (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
RIO Scanner
(Master of the RIO Link)
1747-ASB Module
(Adapter/Slave)
Remote Chassis
Remote Expansion Chassis
Local SLC Chassis
Dataliner™ Message
Display (Adapter/Slave)
PanelView™ Operator Terminal
(Adapter/Slave)
Redi PANEL™
(Adapter/Slave)
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Remote I/O Scanner
Hardware Features
The figure below shows the scanner’s features. RIO Link Connector, Status LED, and DIP Switch information follows.
Dip Switch
B
SCANNER
COMM FAULT
Status LEDs
Cable Tie Slots
O
N
SW1
1 2
1 2 KBAUD
ON
ON
OFF
OFF
ON
OFF
ON
OFF
57.6
115.2
230.4
230.4
CONNECT ONE END OF
CABLE SHIELD TO CHASSIS
MOUNTING BOLT. REFER TO
USERS MANUAL.
Line 1
Shield
Line 2
1747-SN
RIO Link Connector
RIO Link Connector
This 3-pin male connector connects the scanner to the RIO link. The Allen-Bradley replacement part number is 1746-RT29.
Status LEDs
The scanner has two LEDs, FAULT and COMM, which indicate its operating status.
•
FAULT LED
- indicates the scanner’s overall status. The red FAULT LED is off whenever the scanner is configured and operating properly.
•
COMM LED
- allows you to monitor communication with all configured devices. This LED is green once the scanner is in the Run mode. It is red if a hardware fault is detected. The COMM LED status information is valid only when the FAULT LED is off.
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Remote I/O Scanner
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The table below explains the scanner and communication status as indicated by the
FAULT and COMM LEDs.
FAULT LED COMM LED
Flashing Red Not applicable
Red
Off
Off
Off
Off
Off
Not applicable
Red
Off
Green
Flashing
Green
Flashing Red
Status Information
Scanner configuration error.
No RIO link communication attempted.
Duplicate scanner detected on RIO link.
Major fault on scanner.
No RIO link communication attempted.
Hardware fault detected.
Scanner is operating properly.
Scanner is offline (no RIO link communication attempted).
Scanner is operating properly.
Scanner is online (active communication established with all devices).
Scanner is operating properly.
At least one configured RIO link device is not communicating.
Scanner is operating properly.
None of the configured RIO link devices are communicating.
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Remote I/O Scanner
Baud Rate DIP Switch
The figure below shows the location of the DIP switch and the DIP switch settings for the supported baud rates.
IMPORTANT
For proper system operation, the baud rate of all devices on the
RIO link must be the same.
57.6K baud
115.2K baud
230.4K baud
230.4K baud
Required Tools and Equipment
Have the following tools and equipment ready:
• medium blade screwdriver
• termination kit (the package, containing resistors and a ring lug, which was included with the scanner)
• approximately 38 cm (15 inches) of #20 AWG wire for grounding the drain shield to the SLC chassis (for Series A retrofits)
• adequate length of RIO communication cable (Belden™ 9463) for your specific application
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Remote I/O Scanner
7
Installation
ATTENTION
Before installation, make sure that your modular SLC power supply has adequate reserve current capacity. The scanner requires 600 mA at 5V dc.
!
Make sure you have set the DIP switch properly before installing the scanner.
IMPORTANT
Before installation, make sure that your modular SLC power supply has adequate reserve current capacity. The scanner requires 600 mA at 5V dc.
Insertion
Module Release
Card Guide
Cable Tie
1.
Disconnect power.
2.
Align the full-sized circuit board with the chassis card guides. The first slot
(slot 0) of the first rack is reserved for the SLC 500 processor.
3.
Slide the module into the chassis until the top and bottom latches catch.
Publication 1747-IN060B-EN-P - June 2001
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Remote I/O Scanner
4.
Attach the RIO link cable to the connector on the front of the module, behind the door. Ground the cable’s shield wire to a chassis mounting bracket. Refer to the RIO link wiring illustration on page 9.
5.
Insert the cable tie in the slots.
6.
Route the cable down and away from module, securing it with the cable tie.
7.
Cover all unused slots with the Card Slot Filler, Catalog Number 1746-N2.
Removal
1.
Disconnect power.
2.
Remove all cabling.
3.
Press the releases at the top and bottom of the module and slide the module out of the chassis slot.
4.
Cover all unused slots with the Card Slot Filler, Catalog Number 1746-N2.
RIO Link Wiring
The scanner is connected to other devices on the RIO link in a daisy chain (serial) configuration. There are no restrictions governing the space between each device, provided the maximum cable distance (Belden™ 9463) is not exceeded. A 1/2 watt terminating resistor (included with the module) must be attached across line 1 and line 2 of the connectors at each end (scanner and last physical device) of the RIO link. The size of the resistor depends on the baud rate and extended node capability, as shown in the table below.
Note:
To use extended node, all devices on the RIO link must support it. Refer to each device’s user manual.
Using Extended
Node Capability
Not Using
Extended Node
Capability
Baud Rate
57.6K baud
115.2K baud
230.4K baud
57.6K baud
115.2K baud
230.4K baud
Max. Cable Distance
(Belden 9463)
3048 m (10,000 ft.)
1524 m (5,000 ft.)
762 m (2,500 ft.)
3048 m (10,000 ft.)
1524 m (5,000 ft.)
762 m (2,500 ft.)
Resistor Size
82
Ω
1/2 Watt
Gray-Red-Black-Gold
150
Ω
1/2 Watt
Brown-Green-Brown-Gold
82
Ω
1/2 Watt
Gray-Red-Black-Gold
Publication 1747-IN060B-EN-P - June 2001
Remote I/O Scanner
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RIO Link
Connector
RIO Scanner
Terminating Resistor Last
Physical Device End
RIO Link
Connector
Terminating Resistor
Scanner End
Chassis Mounting
Bracket
Ring Lug
Shield Drain Wire
(For New Series B Installations)
Shield Drain Wire
(For Series A Retrofits)
For New Installations
To ensure a proper earth ground of the cable shield, follow these steps:
1.
While the RIO link connector is plugged into the scanner and lines 1 and 2 are connected, strip the cable back to expose enough shield drain wire to reach a chassis mounting bracket.
2.
Attach the ring terminal lug (supplied) to the end of the shield drain wire.
3.
Attach the ring terminal lug to the SLC chassis mounting bracket. Note that for new installations the middle (shield) terminal is not used when connecting to the scanner.
The RIO cable shield must be grounded at the scanner end only.
IMPORTANT
Publication 1747-IN060B-EN-P - June 2001
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Remote I/O Scanner
For Series A Scanner Retrofits
Refer to the illustration on page 9. To eliminate the need to strip the cable back, follow these steps:
1.
Attach the shield wire and a short piece of #20 AWG wire (dotted line) to the shield lug of the RIO link connector.
2.
Attach the other end of the #20 AWG wire to the ring terminal lug.
3.
Attach the ring terminal lug to a chassis mounting bracket.
IMPORTANT
The RIO cable shield must be grounded at the scanner end only.
Ensure that the unshielded portion of the link communication wire (blue and clear) is as short as possible.
Specifications
Backplane Current Consumption
Operating Temperature
Storage Temperature
Humidity
Noise Immunity
Agency Certification
600 mA at 5V dc
0°C to +60°C (+32°F to +140°F)
-40°C to +85°C (-40°F to +185°F)
5 to 95% without condensation
NEMA Standard ICS 2-230
UL listed / CSA Certified
Class I, Division 2, Groups A,B, C, D
CE marked for all applicable directives
Publication 1747-IN060B-EN-P - June 2001
Remote I/O Scanner
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For More Information
For
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.
Refer to this Document
Remote I/O Scanner
User Manual
SLC 500 Modular Hardware Style
Installation and Operation Manual
SLC 500™ and MicroLogix™ 1000
Instruction Set Reference Manual
Pub. No.
1747-6.6
1747-6.2
1747-6.15
If you would like a manual you can:
• download a free electronic version from the internet:
www.theautomationbookstore.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
Publication 1747-IN060B-EN-P - June 2001
SLC 500, PanelView, RediPANEL, and Dataliner are trademarks of Rockwell Automation, Inc.
Belden is a trademark of Belden, Inc.
Publication 1747-IN060B-EN-P - June 2001
Supersedes Publication 1747-5.33 - October 1999
PN 40071-038-01(B)
© 2001 Rockwell International Corporation. Printed in the U.S.A.
