Allen-Bradley DeviceNet 1771-SDN/C User manual

1Publication1771-IN014B-EN-P- September 2001
Installation Instructions
DeviceNet Scanner Module
Catalog Number 1771-SDN/C
Contents
Use this document as a guide to install your 1771-SDN/C Scanner
Module.
Before you install your module you must know how to:
•program and operate an Allen-Bradley PLC processor
•install and configure devices on your DeviceNet network
To: See page:
understand important user information below
prevent Electrostatic Discharge 3
identify related publications 3
understand module compatibility and maintenance 4
understand module enhancements and features 4
identify external scanner module features 6
understand software and hardware requirements 8
set data rate switches for channels 1 and 2 10
set I/O chassis addressing mode switches 11
set node address switches for channels 1 and 2 11
install your module into the chassis 13
connect tothe DeviceNet network 14
understand how your module communicates with the PLC®processor 16
program your PLC-5 processor 16
configure your module for the DeviceNet™ network 25
use the Explicit Message Program Control feature 26
troubleshoot your module 35
For this reference information: See page:
Specifications 39
AB PLCs

Publication 1771-IN014B-EN-P - September 2001
2DeviceNet Scanner Module Catalog Number 1771-SDN/C
Important User Information
Because of the variety of uses for the products described in
this publication, those responsible for the application and use
of these products must satisfy themselves that all necessary
steps have been taken to assure that each application and use
meets all performance and safety requirements, including any
applicable laws, regulations, codes and standards.
In no event will Allen-Bradley be responsible or liable for
indirect or consequential damage resulting from the use or
application of these products.
Any illustrations, charts, sample programs, and layout
examples shown in this publication are intended solely for
purposes of example. Since there are many variables and
requirements associated with any particular installation,
Allen-Bradley does not assume responsibility or liability (to
include intellectual property liability) for actual use based
upon the examples shown in this publication.
Allen-Bradley publication SGI-1.1, Safety Guidelines for the
Application, Installation and Maintenance of Solid-State
Control (available from your local Allen-Bradley office),
describes some important differences between solid-state
equipment and electromechanical devices that should be taken
into consideration when applying products such as those
described in this publication.
Reproduction of the contents of this copyrighted publication,
in whole or part, without written permission of Rockwell
Automation, is prohibited.
Throughout this publication, notes may be used to make you
aware of safety considerations. The following annotations and
their accompanying statements help you to identify a potential
hazard, avoid a potential hazard, and recognize the
consequences of a potential hazard:
ATTENTION
!
ATTENTION
!
Identifies information about practices or
circumstances that can lead to personal
injury or death, property damage, or
economic loss.
IMPORTANT Identifies information that is critical for
successful application and understanding of
the product.
Environment and Enclosure
ATTENTION
!
ATTENTION
!
This equipment is intended for use in a
Pollution Degree 2 industrial environment,
in overvoltage Category II applications (as
defined in IEC publication 60664-1), at
altitudes up to 2000 meters without
derating.
This equipment is considered Group 1,
Class A industrial equipment according to
IEC/CISPR Publication 11. Without
appropriate precautions, there may be
potential difficulties ensuring
electromagnetic compatibility in other
environments due to conducted as well as
radiated disturbance.
This equipment is supplied as "open type"
equipment. It must be mounted within an
enclosure that is suitably designed for those
specific environmental conditions that will
be present and appropriately designed to
prevent personal injury resulting from
accessibility to live parts. The interior of the
enclosure must be accessible only by the
use of a tool. Subsequent sections of this
publication may contain additional
information regarding specific enclosure
type ratings that are required to comply
with certain product safety certifications.
See NEMA Standards publication 250 and
IEC publication 60529, as applicable, for
explanations of the degrees of protection
provided by different types of enclosure.
Also, see the appropriate sections in this
publication, as well as the Allen-Bradley
publication 1770-4.1 ("Industrial Automation
Wiring and Grounding Guidelines"), for
additional installation requirements
pertaining to this equipment.
Identifies information about practices or
circumstances that can cause an explosion
in a hazardous environment, which may
lead to personal injury or death, property
damage, or economic loss.
WARNING
!

Publication1771-IN014B-EN-P- September 2001
DeviceNet Scanner Module Catalog Number 1771-SDN/C 3
Prevent Electrostatic
Discharge
.
Where to Find More
Information
The following table describes related documentation. To order a copy
or to view or download an online version, visit The Automation
Bookstore at:
www.theautomationbookstore.com
ATTENTION
!
ATTENTION
!
This equipment is sensitive to electrostatic discharge
which can cause internal damage and affect normal
operation. Follow these guidelines when you handle
this equipment:
•touch a grounded object to discharge potential
static
•wear an approved grounding wrist strap
•do not touch connectors or pins on component
boards
•do not touch circuit components inside the
equipment
•if available, use a static-safe workstation
•when not in use, store the equipment in
appropriate static-safe packaging
For information about: See this document: Publication number:
Configuring the scanner
moduleand associated
hardware in an example
application
1771-SDN DeviceNet Scanner
Module User Manual 1771-6.5.132
Performing theControlFlash
Update ControlFlash Firmware Upgrade Kit User Manual 1756-6.5.6
RSLogix 5™ software Getting Results with RSLogix 5 9399-RL53GR
RSLinx™ software Getting Results withRSLinx 9399-WAB32GR
RSNetWorx for DeviceNet™
software RSNetWorx for DeviceNet Demo CD 9398-DNETDEMO
Connecting the DeviceNet
network DeviceNet Cable Planning and Installation Manual DN-6.7.2
AB PLCs

Publication 1771-IN014B-EN-P - September 2001
4DeviceNet Scanner Module Catalog Number 1771-SDN/C
Module Compatibility and
Maintenance Requirements
The 1771-SDN/C DeviceNet Scanner Module is fully compatible with
the Series A and Series B versions. You can use the Series C version as
a spare or replacement module with one requirement: you must
change the postion of Switch 5 to the off or “0” position in the
Configuration switchbank as shown below:
The scanner revision is identified by RSNetWorx. In Series B mode,
the scanner is identified as Series B with major number as 4 and minor
number as 50. In Series C mode, the scanner is identified as Series C
with major number as 6 and minor number as 2 or higher.
To use the Series C module enhancements listed below, the scanner
module Configuration Switch 5 must be set in the on or “1” position.
Module Enhancements
Updated DeviceNet Master Library
Electronic Keying - added to include Major and Minor revision
checking.
Shared Inputs - multiple scanner modules can acquire the inputs
from a specific input device without using separate connections.
Auto Device Replacement (ADR) - consists of Node Recovery and
Configuration Recovery:
•Node Recovery - this feature causes the node number of the
replacement device to be automatically changed to the node
number of the original device. The replacement device’s node
number must be writable over the DeviceNet network and must
initially be set to 63.
•Configuration Recovery - this feature causes the replacement
device’s configuration to be made identical to the original device.
The replacement device’s configuration must be writable over the
DeviceNet network. Configuration Recovery files are stored in the
master scanner that is communicating with the original device
through RSNetWorx for DeviceNet.
Configuration
Chassis Address
Series C label
NOTE: Default scanner setting is Series C operation.
When replacing an older scanner, set
configuration Switch 5 to the OFF position.
See Installation Instructions for details.

Publication1771-IN014B-EN-P- September 2001
DeviceNet Scanner Module Catalog Number 1771-SDN/C 5
Other Features
Change of State
Change of state enables the scanner module to perform a scan:
•whenever a network data change occurs, or
•at a user-configurable heartbeat rate
Because data is only sent on an as-needed basis, this feature increases
system performance by reducing network traffic.
Cyclic I/O
Cyclic I/O allows you to instruct the scanner module to perform a
scan at a specific send rate.
Because data is only sent at a periodic rate, this feature increases
system performance by reducing network traffic.
Pass-Through
The 1771-SDN “pass-through” feature allows communication with the
DeviceNet network from another network. This feature can be used to
adjust and fine tune the nodes on your network.
For more information on how to use the pass-through feature, refer to
Chapter 5 of the PLC-5 DeviceNet Scanner Module User Manual,
publication 1771-6.5.132.
AB PLCs

Publication 1771-IN014B-EN-P - September 2001
6DeviceNet Scanner Module Catalog Number 1771-SDN/C
External Module
Features
Use the drawing below to identify the features of the 1771-SDN/C and
B versions of the Scanner Module.
DeviceNet Port 1 - use the color-coded
header to wire your module.
20274 20275
Module Status Indicator - indicates
whether the device has power and
is functioning properly
Channel 1 Status Indicator - gives
diagnostic indications for Channel 1.
Reset Button - resets your module.
Node Address and Status Display -
displays numeric codes that indicate
scanner node address, status and/or
errors for Channel 1.
Channel 2 Status Indicator - gives
diagnostic indications for Channel 2.
Multi-position Switches-
use to set the data rate, chassis addressing mode
and scanner node address for each channel.
Front of Module Left Side of Module
DeviceNet Port 2 - use the
color-coded header to wire your
module.
Data Rate
Switch Settings Chassis Address
Switch Settings
Channel 1 & 2
Node Address Switch Settings
Node Address and Status Display -
displays numeric codes that indicate
scanner node address, status and/or
errors for Channel 2.
MODULE
STATUS
RESET
CHANNEL 1
NETWORK
STATUS
NODE/
ERROR CODE
DeviceNet
CHANNEL 2
NETWORK
STATUS
NODE/
ERROR CODE
DeviceNet
1771-SDN
CHANNEL 1 CHANNEL 2 CONFIGURATION
Allen-Bradley

Publication1771-IN014B-EN-P- September 2001
DeviceNet Scanner Module Catalog Number 1771-SDN/C 7
Series A Channel, Port and Switch Identification
The Series A version of this module (1771-SDN) uses different
channel, port and switch identification as shown in the following
figure:
Channel B
Channel A
DeviceNet Port A - use the
color-coded header
to wire your module.
20274 20275
Channel A Status Indicator -
gives diagnostic indications for
Channel A.
Channel B Status Indicator -
gives diagnostic indications for
Channel B.
Multi-position Switches-
use to set the data rate, chassis addressing mode
and scanner node address for each channel.
Front of Module Left Side of Module
DeviceNet Port B - use the
color-coded header to wire your
module.
Data Rate
Settings AddressChassis
Settings
Channel A & B
Node Address Settings
CHANNEL A CHANNEL B CONFIGURATION
AB PLCs

Publication 1771-IN014B-EN-P - September 2001
8DeviceNet Scanner Module Catalog Number 1771-SDN/C
Software and Hardware
Requirements
Software Requirements
Before you intall the scanner module, make sure you have the
following software:
•personal computer with Microsoft Windows™ 95 or later
operating system
•RSNetWorx for DeviceNet software, version 2.22 or later
•RSLogix 5 software
Electronic Data Sheet Requirement
To use the new features of this release, the scanner module requires
the latest EDS file for RSNetWorx for DeviceNet software. If the
software displays the device as an “unknown device”, you must
download the current EDS file.
You can get the latest EDS file online at:
http://www.ab.com/networks/eds
Once you are at this location:
1. Select DeviceNet
2. Enter the catalog number: 1771-SDN
3. Select Search
Hardware Requirements
The 1771-SDN Scanner Module is compatible only with the 1771-A1B
through 1771-A4B or later I/O chassis in any configuration supported
by the 1771 family.
You can use the following chassis with the 1771-SDN Scanner Module:
•Local I/O Chassis with only the PLC processor running in the
leftmost slot
•Extended Local I/O Chassis with any 1771-ALX Adapter Module
running in the leftmost slot
•Remote I/O Chassis with a 1771-ASB Adapter Module running in
the leftmost slot or a PLC processor running in the leftmost slot

Publication1771-IN014B-EN-P- September 2001
DeviceNet Scanner Module Catalog Number 1771-SDN/C 9
•Remote I/O Chassis linked to ControlNet with a 1771-ACN(R)
running in the leftmost slot
Do not use the 1771-SDN Scanner Module with the following:
•Chassis configured for complementary I/O
•Remote I/O chassis connected to a preceding chassis using a
1771-SN Sub I/O Scanner Module
The 1771-SDN Scanner Module is compatible with any PLC-2, PLC-3
or PLC-5processor that supports block transfer read and write
instructions. The example configurations in these installation
instructions use a PLC-5 processor.
Perform the ControlFLASH Update
If you have the previous release of firmware and you want to upgrade
it to this release, you must perform the ControlFLASH update. To get
the kit, contact Rockwell Automation Technical Support at
440.646.5800. To install the kit, refer to the ControlFLASH Firmware
Upgrade Kit User Manual, publication 1756-6.5.6.
Before you install your module you must set the following switches:
•data rate for each DeviceNet channel
•I/O chassis addressing mode (1/2, 1 or 2-slot addressing)
•scanner node address for each channel
IMPORTANT The 1771-SDN Scanner Module fits in any slot of the
chassis except for the leftmost slot, which is reserved
for the PLC processor. The scanner module will not
conflict with other 1771 I/O devices in the chassis.
You can install multiple scanners in the same chassis.
AB PLCs

Publication 1771-IN014B-EN-P - September 2001
10 DeviceNet Scanner Module Catalog Number 1771-SDN/C
Set the Data Rate Switches
for Channels 1 and 2
To set the DeviceNet data rate switches for Channels 1 and 2:
1. Locate the switchbank labeled “Channel 1” on the left side of the
module.
2. Use the table below to determine the data rate you want to set
for “Channel 1.” Record your choice in the fourth column.
3. Using a ball point pen or similar object, adjust switches 2 and 1
to your desired data rate setting. (NOTE: Do not use a pencil
to adjust switches. The lead may break off in the
switchbank.) Slide the switches up to denote an on or “1”
position. Slide the switches down to denote an off or “0”
position.
For example, if you want to set DeviceNet data rate of 500K baud for
Channel 1, then you set switch 2 to an off or “0” position and switch 1
to an on or “1” position.
4. Repeat steps 1-3 to set the DeviceNet data rate for Channel 2,
using the switchbank labeled “Channel 2’. Adjust the switches to
your desired data rate setting.
Set the I/O Chassis
Addressing Mode Switches
To set the I/O chassis addressing mode switches:
1. Locate the switchbank labeled “Configuration” on the left side of
the module.
2. Use the following table to determine the chassis addressing
mode you want to set. Record your choice in the fourth column.
Channel 1 and 2
Data Rate Switch Position Note Your
Data Rate
1 2
125K baud 0 0
250K baud 0 1
500K baud 1 0
Not allowed 1 1
Data Rate Sw.1 Sw.2
500K 1 0
Data Rate
20276
Channel 1
Configuration
20277
Chassis Address