Rockwell Automation 1771ACNB, 1775-1771ACNRB, D17716.5.123 User Manual
Allen-Bradley
ControlNet
Adapter Module
User
(Cat. No. 1771-ACN and
-ACNR Series B)
Manual
Important User Information
Because of the variety of uses for the products described in this
publication, those responsible for the application and use of this control
equipment 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.
The illustrations, charts, sample programs and layout examples shown in
this guide 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 dif
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
in part, without written permission of Allen-Bradley Company, Inc., is
prohibited.
ferences between
Throughout this manual we use notes to make you aware of safety
considerations:
A
TTENTION:
circumstances that can lead to personal injury or death, property
damage or economic loss.
Attention statements help you to:
identify a hazard
avoid the hazard
recognize the consequences
Important: Identifies information that is critical for successful application
and understanding of the product.
Identifies information about practices or
Preface
es
Objectiv
Audience
Vocabulary
What This Manual Contains
Chapter
Read this preface to familiarize yourself with this manual and to
learn how to use it properly and efficiently.
We assume that you have previously used an Allen-Bradley
programmable controller, that you are familiar with its features, and
that you are familiar with the terminology we use. If not, read the
user manual for your processor before reading this manual.
In this manual, we refer to:
• the individual ControlNet adapter module as the “adapter” or
the “module.”
• the programmable controller as the “controller” or the
“processor.”
The contents of this manual are as follows:
What This Manual Contains
Title What’s Covered
Introducing the ControlNet Adapter
1
Modules
Installing Your ControlNet Adapter
2
Module
3 Addressing Modes for Your I/O Hardware addressing and configuration options
Planning to Use Your ControlNet
4
Adapter
5 Troubleshooting
Appendix
A Specifications Module specifications
A Practical Example of ControlNet
B
Concepts
Describes features, capabilities, and hardware
components.
Procedures and guidelines for installing the module;
including power requirements, location, setting
switches, and actual installation.
How the adapter operates on ControlNet and
information to assist in configuring your system.
Troubleshooting aids, including status display, health
indicators and ControlNet status indicators
An example program and description thereof
Publication
1771-6.5.123 – May 1996
Using This ManualP–2
Terminology Used in This Manual
Use this term To describe
complementary module
Configuration Manager node node responsible for distributing ControlNet configuration data to all nodes on the
ControlNet network a communication architecture that allows the exchange of messages between
connection an opened communication path between two nodes on a ControlNet network
ControlNet status indicators channel A and channel B indicators on your node indicating status on the ControlNet
DF1 protocol a peer-to-peer link-layer protocol that combines features of ANSI X3.28-1976
DH+ network
(Data Highway Plus)
discrete I/O data transfer type of data transfer in which single units of I/O have discrete relationships with values
drop cable a cable that connects a node to the trunk cable (this is an integral part of
frame single data transfer on a ControlNet link
half–slot addressing a method of addressing where the processor can address its I/O in 1/2–slot I/O groups
high–density i/o module a module that provides 16 input or 16 output terminals
I/O Group an addressing unit that can contain up to 16 input terminals and 16 output terminals
I/O map table table that you configure using the programming software to map data from an I/O
link collection of nodes with unique addresses (in the range of 1-99). Segments
map-table entry one entry in the I/O map table that you configure using the programming software to
maximum scheduled node node with highest network address that can use scheduled time on a ControlNet link
maximum unscheduled node node with highest network address that can use unscheduled time on a ControlNet link
network access port (NAP) port that provides a temporary network connection through an RJ-45 connector
network a series of nodes connected by some type of communication medium. The
network address a node’s address on the network (this replaces MAC ID and node address).
node port of a physical device connecting to the network which requires a network address
network update interval (NUI) single occurrence of the network update time (NUT)
network update time (NUT) repetitive time interval in which data can be sent on the ControlNet network
non-discrete I/O data transfer type of data transfer in which blocks of data transferred to or from I/O modules use
one–slot addressing A method of addressing where the processor can address its I/O in 1–slot I/O groups.
parallel port an input/output port for a device that transmits multiple data and control bits over wires
PC An Allen–Bradley programmable controller, such as the PLC–5
PCCC Programmable Controller Communication Commands, an application-level command
processor a term used to mean an Allen–Bradley programmable controller
quad–density i/o module a module that provides 32 input or 32 output terminals
redundant media dual cable system that allows you to receive the best signal over a network
The following list defines common terms used in this manual.
a module that performs an opposite function; an input module complements an output
module and vice versa
network
Allen-Bradley Company, Inc. products and certified third-party products
link
specification subcategories D1 (data transparency) and F1 (two-way simultaneous
transmission with embedded responses)
an Allen-Bradley local area network made up of one or more token-passing baseband
links
in the processor’s data table; uses the processor’s input- and output-image tables
(I and O files); configured on a per-node basis in the ControlNet I/O map table
1786 taps)
chassis and other devices on the ControlNet network to particular data-table file
addresses
connected by repeaters make up a link; links connected by bridges make up a network
map data from one I/O chassis (or other device on a ControlNet link) to particular
data-table file addresses
connection paths between any pair of nodes can include repeaters, routers, bridges
and gateways
in order to function on the network — a link may contain a maximum of 107 nodes
integer input and output data-table files that you specify; cannot use the processor’s
input- and output-image tables (I and O files); scheduled transfers are configured in
the ControlNet I/O map table, unscheduled transfers make use of ControlNet I/O (CIO)
transfer instructions
connected in parallel
set that Allen-Bradley programmable controllers use to communicate across networks
Publication
1771-6.5.123 – May 1996
Using This Manual P–3
Use this term To describe
repeater two-port active physical-layer device that reconstructs and retransmits all traf
hears on one segment to another segment
remote I/O link a serial link for carrying I/O data between a PLC or SLC processor/scanner and
remote I/O adapters
RS-232-C port a serial port that complies with accepted industry standard for serial binary
communication circuits in a point-to-point link
scheduled transfers deterministic and repeatable transfers that are continuous and asynchronous to the
ladder-logic program scan
segment trunk-cable sections connected via taps with terminators at each end;
a segment does not include repeaters
serial port a port that transmits/receives data and control bits sequentially over a single
transmission line (see RS-232-C port)
standard–density i/o module a module that provides up to 8 input terminals or 8 output terminals
tap a component that connects products to the ControlNet trunk cable. A tap is required
for each node and for both sides of each repeater.
terminator a 75-ohm resistor (mounted in a BNC plug) placed on the ends of segments to prevent
reflections from occurring at the ends of cables.
trunk cable bus or central part of a cable system.
trunk-cable section length of trunk cable between any two taps
two–slot addressing a method of addressing where the processor can address its I/O in 2–slot I/O groups
unscheduled transfers non-deterministic data transfers through ladder-initiated communication or
programming devices
fic it
Conventions
We use these conventions in this manual:
In this manual, we show: Like this:
that there is more information about a topic
in another chapter in this manual
that there is more information about the topic
in another manual
More
Publication
1771-6.5.123 – May 1996
Using This ManualP–4
Product
Compatibility
The 1771-ACN and 1771-ACNR adapter modules are two of many
hardware components that make up a programmable controller
system. The table below lists the hardware components and products
with which you can use the adapter module.
Compatible Hardware Products
Product name
Processors PLC–5/20C and PLC-5/40C processors 1785-L20C, 1785-L40C
Communication
Devices
Universal I/O
Chassis
I/O Modules Block transfer modules
Power Supplies System power supply
Description Catalog number
ControlNet KT Communication Card
ControlNet KTx Communication Card
ControlNet Serial/Parallel Communication Interface
Flex I/O ControlNet Adapter
1771 ControlNet Adapter Module
4–slot
8–slot
12–slot
16–slot
8–point I/O Standard density I/O modules
16–point I/O High density I/O modules
32–point I/O Quad–Density I/O modules
Auxiliary power Supply
Auxiliary Power Supply module (120V ac input, 3A)
Auxiliary Power Supply module (120V ac input, 8A)
Redundant Power Supply module
Auxiliary Power Supply module (24V dc input, 8A)
Auxiliary Power Supply module (220/240V ac input, 8A)
Auxiliary Power Supply module (120/220V ac input, 16A)
PLC–2 Power Supply (115V ac input)
PLC–2 Power Supply (24V dc input)
Local Power Supply
Auxiliary Power Supply (24V dc input)
1784-KTC
1784-KTCx
1770-KFC
1794-ACN
1771-ACN, -ACNR
1771–A1, –A1B
1771–A2, –A2B
1771–A3B, A3B1
1771–A4, –A4B
All modules that use the 1771
I/O structure
1771–P1
1771–P2
1771–P3
1771–P4, –P4S, –P4S1
1771–P4R
1771–P5
1771–P6S, –P6S1
1771–PS7
1772–P1
1772–P4
1774–P1
1777–P4
Publication
1771-6.5.123 – May 1996
Using This Manual P–5
Related Publications
Summary
For additional information on planning and installing your
ControlNet system, see the following publications:
Publication
ControlNet PLC-5 Programmable Controllers User Manual 1785-6.5.14
ControlNet Cable System Component List AG-2.2
ControlNet Cable System Planning and Installation Manual 1786-6.2.1
ControlNet Coax Tap Installation Instructions 1786-2.3
ControlNet Network Access Cable Installation Instructions 1786-2.6
ControlNet Repeater Installation Instructions 1786-2.7
Industrial Automation Wiring and Grounding Guidelines 1770-4.1
Publication Number
This preface gave you information on how to use this manual
efficiently. Chapter 1 introduces you to the ControlNet remote I/O
adapter module.
Publication
1771-6.5.123 – May 1996
Using This ManualP–6
Publication
1771-6.5.123 – May 1996
Table
of Contents
Introducing
the ControlNet
Adapter Module
Installing Y
our ControlNet
Adapter Module
Chapter 1
Chapter
Module
Hardware
Chapter Summary
Objectives
Description and Features
Components
Diagnostic
Communication
Network
ControlNet
Network
Indicators
Access Port (NAP)
Connectors
Address Switch Assemblies
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset Pushbutton
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
Chapter 2
Chapter
Determining
Determining
Setting
Setting
Setting
Installing
Connecting
Powerup
Chapter Summary
Objectives
Power Requirements
the Module Location and Keying the I/O Chassis
the Network
Address Switches
the I/O Chassis Switches
Backplane
Connecting
Switch Assembly
the I/O Chassis Power Supply Configuration Plug
the Adapter Module in the Chassis
Programming T
Sequence
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Y
our Adapter to the ControlNet Network
erminals to the Network via the NAP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .
. . . . . . . .
. . . . . . . . . . . . . . . . .
. . . . . . . . . .
. . .
1–1
1–1
1–1
1–2
1–2
1–3
1–3
1–4
1–4
2–1
2–1
2–1
2–3
2–4
2–4
2–5
2–5
2–6
2–8
2–9
2–10
Addressing Modes for
Your I/O
Chapter 3
Chapter
Addressing
Addressing Summary
Chapter Summary
Objectives
Y
our I/O
Using
2-Slot Addressing
Module Combinations
I/O
Standard-density I/O (8 point) Modules
Using
High-density (16 point) I/O Modules
Using
1-Slot Addressing
Using
Module Combinations
I/O
1/2- Slot Addressing
Using
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Publication 1771-6.5.123 – May 1996
3–1
3–1
3–3
3–3
3–4
3–6
3–7
3–9
3–9
3–1
3–1
1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contentsii
Planning
to Use Y
our
ControlNet Adapter Module
Troubleshooting
Chapter 4
Chapter
Overview
Discrete
Configuring
Nondiscrete
Configuring
Chapter Summary
Objectives
of Adapter Operation
I/O Data T
Discrete I/O Data T
I/O Data T
ControlNet I/O (CIO) Instructions
Using
Mapping
Example:
Example:
Directly Into Processor Memory
Nondiscrete Input Module Communications
Nondiscrete Output Module Communications
Nondiscrete I/O Data T
Chapter 5
Chapter
Troubleshooting
Chapter Summary
Objectives
Indicators and Display Mnemonics
Health
ControlNet
Status Indicators
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
ransfer
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
With the Status Indicators and Status Display
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ransfers
ransfers
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
ransfers
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . .
. . . . . . .
. . . . .
. . . .
4–1
4–1
4–2
4–2
4–3
4–3
4–4
4–4
4–5
4–6
4–6
5–1
5–1
5–2
5–3
5–3
Specifications
A Practical Example of
ControlNet Concepts
Appendix A
Specifications
Appendix B
Overview
Example
of Example
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A–1
B–1
B–2
Publication
1771-6.5.123 – May 1996
Chapter Objectives
Module Description and Features
Chapter
1
Introducing the ControlNet
Adapter Module
This chapter describes the ControlNet adapter modules’ (cat. no.
1771-ACN and -ACNR):
• features
• hardware components, including
•
diagnostic indicators
•
communication reset pushbutton
• network access port (NAP)
•
ControlNet connectors
•
network address switch assemblies
The 1771-ACN and -ACNR adapters control 1771 remote I/O on the
ControlNet network. The ControlNet network is a communication
architecture that allows the exchange of messages between
Allen-Bradley products and certified third-party products.
Hardware Components
The 1771-ACN and -ACNR Adapters features include:
• high speed data transfer
•
diagnostic messages
• local communication network access through the network access
port (NAP)
• redundant media (1771-ACNR only)
The adapter module consists of the following major components:
•
ControlNet status indicators
•
status display
•
communication reset pushbutton
• network access port (NAP)
• ControlNet connectors (one on 1771-ACN; two on 1771-ACNR)
• module net address switch assemblies (on top of module)
Publication
1771-6.5.123 – May 1996
Introducing the ControlNet Adapter Module 1–2
Figure 1.1
ControlNet
Adapter Module
Module Network Address Switches
(accessible thru top of module)
NET
ADDRESS
STATUS
OK OK
NET
ADDRESS
STATUS
Status Display and
Net Address
OK Indicator
Diagnostic Indicators
Communication Reset Pushbutton
ControlNet Status Indicators
Network Access Port (NAP)
A
ALLEN-BRADLEY
1771-ACN
A
B
ALLEN-BRADLEY
1771-ACNR
ControlNet Media Port
ControlNet Redundant Media Port
(1771-ACNR only)
1771-ACN 1771-ACNR
Diagnostic Indicators
The OK indicator is located on the front panel of the adapter module
(Figure 1.1). It shows both normal operation and error conditions in
your remote I/O system.
Publication
In addition, an alphanumeric display (net address/status) provides
status code indications when an error occurs during initialization or
operation.
A complete description of the diagnostic indicators and status display
and how to use them for troubleshooting is explained in chapter 5.
Communication Reset Pushbutton
This pushbutton is active whenever the status display shows RSET
or PRL. PRL is active only when the I/O chassis backplane switch is
in the PRL position. If the above conditions are met, you can use the
reset pushbutton (Figure 1.1) to reset the adapter module and resume
communication after a communication error occurs.
1771-6.5.123 – May 1996
Introducing the ControlNet Adapter Module 1–3
2
Network Access Port (NAP)
The network access port (Figure 1.1) provides a bidirectional
electrical interface for programming, maintenance, and I/O
monitoring devices in both redundant and non-redundant
connections. Connecting programming terminals to the network
using the NAP is described in Chapter 2.
ControlNet Connectors
Cable connection to the module is through standard BNC connectors
on the module frontplate.
Example
Terminator
of a Redundant System
Terminator
More
trunkline
A =
A
trunkline
B =
B
PLC-5/20C or
PLC-5/40C
➊ End device supporting redundant cabling is a 1771-ACNR.
end device
Refer to the ControlNet Cable System Planning and Installation user
manual, pub. no. 1786-6.2.1 for more information.
Terminator
Terminator
➊ end device ➊
Publication
1771-6.5.123 – May 1996
Introducing the ControlNet Adapter Module 1–4
’s Selection
Network Address Switch Assemblies
You must set two switch assemblies to configure your adapter
module with its unique network address. Y
through the top of the module. Figure 1.2 shows the location of the
switches. These switches are read on powerup to establish the
network address of the module. Network address switch settings are
described in Chapter 2.
Figure 1.2
Assigning
Address
Switch
Assemblies
the Network Number
ou access these switches
One
Ten’s Selection
Chapter Summary
For optimum throughput, assign addresses to your ControlNet nodes
in a sequential order starting with 02. Address 01 is reserved for the
controlling processor on the network
In this chapter we discussed the functions and hardware components
of the ControlNet Adapter Module.
Publication
1771-6.5.123 – May 1996
Chapter Objectives
Chapter
2
This chapter describes the procedures for installing your ControlNet
adapter module. These include:
• CE compliance
• determining power requirements
• determining the module location and keying the I/O chassis
•
setting the network address switches
•
setting the I/O chassis switches
• setting the I/O chassis power supply configuration plug
• installing the adapter module in the chassis
• connecting programming terminals to the network via the
network access port (NAP)
•
powerup sequence
Compliance to European Union Directives
If this product has the CE 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 V
oltage Directive
This product is tested to meet Council Directive 73/23/EEC Low
Voltage, by applying the safety requirements of EN 61131–2
Programmable Controllers, Part 2 – Equipment Requirements and
Tests.
Publication
1771-6.5.123 – May 1996
Installing Your ControlNet Adapter Module 2–2
For specific information required by EN 61131-2, see the appropriate
sections in this publication, as well as the following 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
Determining Power Requirements
Determining the Module Location and Keying the I/O Chassis
The ControlNet adapter module requires a backplane current of 1.0A
at 5V dc. Remember to add this amount to other current
requirements for your I/O chassis.
The ControlNet adapter module must be installed in the leftmost slot
of the I/O chassis.
The I/O chassis backplane connectors are keyed to accept only one
type of module. This prevents accidental insertion of other modules
in the wrong module slot.
Position the keying bands (Figure 2.1) in the backplane connectors to
correspond to the key slots on the module. This prevents you from
inserting the wrong module in this slot. For the ControlNet adapter
module, position the keying bands:
• between 54 and 56 on the upper connector, and
• between 16 and 18 on the lower connector
ATTENTION: Observe the following precautions
when inserting or removing keys:
!
• insert or remove keys with your fingers
• make sure that key placement is correct
Incorrect keying or the use of a tool can result in
damage to the backplane connector and possible system
faults.
Publication
1771-6.5.123 – May 1996
Installing Your ControlNet Adapter Module
You can change the position of these bands if subsequent system
design and rewiring makes insertion of a different type of module
necessary.
Figure 2.1
Keying
Band Positions
2–3
Place keying bands between:
• 54 and 56 on the upper connector
• 16 and 18 on the lower connector
I/O chassis
ATTENTION: Insert or remove
keying bands with your fingers.
Upper Connector
Keying Bands
Lower Connector
11022-I
Publication
1771-6.5.123 – May 1996
Installing Your ControlNet Adapter Module 2–4
Setting the Network Address Switches
The switches on the top of the adapter module determine the network
address of the adapter. The two switches are:
• the ten’
• the one’
s switch
s switch
The combination of these switches allows selection of network
addresses from 01 to 99.
Use a small bladed screwdriver to rotate the switches.
Figure 2.2
Setting
the Network Address
Ten’
s Selection
Ten’
s Selection
NET ADDRESS
One’
For example, the 10’s selection switch is set to 10,
and the 1’s selection switch is set to 5.
10 5
Then,
NOTE:
00 is an invalid number
plus
= 15
.
One’
s Selection
s Selection
Publication
1771-6.5.123 – May 1996
Loading...