Allen-Bradley ControlLogix DeviceNet 1756-DNB Manuale utente
Packing Data PK
Publication 1756-5.66 – May 1998
(Catalog Number 1756-DNB)
To the Installer
The
1756-DNB module is a DeviceNet
t
scanner module that resides in a
ControlLogixtchassis and provides DeviceNet monitoring, configuration,
and I/O scan capabilities.
Use this document as a guide to install the ControlLogix DeviceNet
scanner module.
To See page
Handle the module 2
Understand Compliance to European Union Directives 3
Understand the module software features 4
Identify the module hardware features 6
Prepare to install the module 7
Prepare the chassis for installation 8
Install the module into the chassis 8
Wire the DeviceNet connector 12
Connect the module to the DeviceNet network 13
Apply chassis power 14
Check module alphanumeric indicators 14
Use the manual configuration pushbutton 15
Interpret the node address/status indicator 16
Interpret the status indicators 18
Installation Instruction
s
AB Parts
ControlLogix DeviceNet Scanner Module Installation Instructions2
Publication 1756-5.66 – May 1998
To See page
Understand the ControlLogix controller interface 22
Understand CSA Hazardous Location Approval 25
Understand module specifications 27
Handling the Module
ATTENTION:
The module uses CMOS technology
, which is highly
sensitive to electrostatic dischar
ge (ESD). ESD may be present
whenever you are handling the module. Handling a module without
any ESD protection can cause internal circuit damage that may not be
apparent during installation or initial use.
T
ake these precautions to guard against ESD damage:
•Before handling the module, be sure to wear the provided static strap and
touch a grounded object to discharge any built-up static charge.
•Avoid touching the backplane connector or interface connector pins located
on the module.
•If the module is not in use, store it in the anti-static clamshell in which the
module was shipped.
Important: Remember
, a computer with ac power disconnected is
not
a
grounded object.
ControlLogix DeviceNet Scanner Module Installation Instructions 3
Publication
1756-5.66 – May 1998
Understand Compliance to European Union Directives
If this product bears the
ÎÎ
ÎÎ
Î
Î
Î
Î
Î
Î
mark, it is approved for installation within the
European Union and EEA regions. It has been designed and tested to meet the
following directives.
EMC Directive
This product is tested to meet Council Directive 89/336/EEC Electromagnetic
Compatibility (EMC) and the following standards, in whole or in part,
documented in a technical construction file:
•EN 50081-2EMC – Generic Emission Standard, Part 2 – Industrial Environment
•EN 50082-2EMC – Generic Immunity Standard, Part 2 – Industrial Environment
This product is intended for use in an industrial environment.
Low Voltage Directive
This product is tested to meet Council Directive 73/23/EEC LowVoltage, by
applying the safety requirements of EN 61131–2 Programmable Controllers,
Part 2 – Equipment Requirements and Tests.
For specific information required by EN 61
131-2, see the appropriate sections in
this publication as well as these Allen-Bradley publications:
•Industrial Automation Wiring and Grounding Guidelines for Noise Immunity,
publication 1770-4.1
•Guidelines for Handling Lithium Batteries, publication AG-5.4
•Automation Systems Catalog, publication B111
This
equipment is classified as open equipment and must be mounted in an
enclosure during operation to provide safety protection.
AB Parts
ControlLogix DeviceNet Scanner Module Installation Instructions4
Publication 1756-5.66 – May 1998
Understand the Module’s Software Features
The 1756-DNB module has the following software features. Y
ou activate these
features by using DeviceNetManager
tsoftware (catalog no. 1787-MGR) or
RSNetWorx for DeviceNett. For more information, refer to the DeviceNet
Manager Software User Manual, publication 1787-6.5.3, the appropriate
RSNetWorx for DeviceNet documentation, and the 1756-DNB Scanner
Configuration Manual, publication 1756-6.5.15.
Slave Mode
The
slave mode feature allows processor
-to-processor communication. Slave
mode also allows the scanner to perform as a slave device to another master on
the network.
Like any other slave, when the scanner module is in slave mode, it exchanges
data with only one master. You control what information is exchanged through
scan list configuration and associated mapping functions of DeviceNet Manager
software.
The slave mode function has these variations:
Scanner is in this mode when it
Null contains an empty or disabled scan list (out-of-box default)
Master serves as a master to one or more slaves but is not
simultaneously serving as a slave to another master
Slave serves as a slave to another master
Dual serves as both a master to one or more slaves and as a
slave to another master simultaneously
ControlLogix DeviceNet Scanner Module Installation Instructions 5
Publication
1756-5.66 – May 1998
Change of State
The
scanner module can send and receive data on a change of state basis with
slave devices that also have this feature. Data is sent:
•
whenever a data change occurs, or
•
at a user
-configurable heartbeat rate
Change of state increases system performance by reducing network traf
fic, since
data is only sent on an as-needed basis. Use DeviceNet Manager software to
activate this feature.
Cyclic I/O
The
scanner module can send and receive data on a cyclic basis with slave
devices that also have this feature.
Cyclic I/O increases system performance by reducing network traf
fic, since data
is only sent at a user
-configurable rate. Use DeviceNet Manager or RSNetWorx
for DeviceNet software to activate this feature.
AB Parts
ControlLogix DeviceNet Scanner Module Installation Instructions6
Publication 1756-5.66 – May 1998
Identify the Module’s Hardware Features
Use this illustration to identify the external features of the module.
MOD/NET
DeviceNetTM
OK
Front ViewSide View
Backplane
Connector
Door
Front
Panel
DeviceNet
Connector
Health
and status
Indicators
Product
Label
Wiring Color
Codes
I/O
MOD/NET
Pushbutton
Label
ControlLogix DeviceNet Scanner Module Installation Instructions 7
Publication
1756-5.66 – May 1998
Prepare to Install the Module
Before
you install the module, make sure that you have these components.
1756-DNB
module
1756-P
A72 or 1756-PB72
power supply
1756-A4, 1756-A7, 1756-A10, or
1756-A13 chassis
small screwdriver
DeviceNet open-style
5- or 10-position connector
DeviceNet trunk
or drop cable
AB Parts
ControlLogix DeviceNet Scanner Module Installation Instructions8
Publication 1756-5.66 – May 1998
Prepare the Chassis for Module Installation
Before you install the module, you must install and connect a ControlLogix
chassis and power supply
. To install these products, refer to the installation
instructions you received with them.
20805-M
Power
supply
Chassis
Install or Remove the Module
This
module is designed to be installed or removed while chassis power is applied.
!ATTENTION: When you insert or remove a module while
backplane power is on, an electrical arc may occur. An electrical
arc can cause personal injury or property damage by:
•
sending an erroneous signal to your system’
s field
device causing unintended machine motion or loss of
process control
•
causing an explosion in a hazardous environment
Repeated electrical arcing causes excessive wear to contacts on
both the module and its mating connector
. W
orn contacts may
create electrical resistance that can af
fect module operation.
ControlLogix DeviceNet Scanner Module Installation Instructions 9
Publication
1756-5.66 – May 1998
Determine Module Slot Location
This
example shows chassis slot numbering in a 4-slot chassis. Slot 0 is the first
slot and is always located to the right of the power supply. Y
ou can use any size
ControlLogix chassis and install the module in any slot.
Slot 0 Slot 2
Slot 1 Slot 3
Power Supply
Chassis
You
can use multiple 1756-DNB modules in the same chassis. Y
ou can use as
many 1756-DNB modules as your power supply can accommodate (i.e., number
for which the power supply is rated).
AB Parts
ControlLogix DeviceNet Scanner Module Installation Instructions10
Publication 1756-5.66 – May 1998
Install the Module
Align the circuit board with top
and bottom guides in the chassis.
Slide the module into the chassis.
Make sure the module properly connects
to the chassis backplane.
The module is fully installed
when it is flush with the power
supply or other installed modules.
1
2
3
Circuit board
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