Allen-Bradley POINT I/O ControlNet 1734-ACNR User manual

Publication 1734-IN582B-EN-P - February 2005
Installation Instructions
POINT I/O ControlNet Adapter
Catalog Number 1734-ACNR
The POINT I/O ControlNet Adapter is a communications adapter for
POINT I/O modules. The adapter provides an interface for
controlling and communicating with POINT I/O modules from a
ControlNet network.
43247
Module
Status
PointBus
Status
ControlNet A
Status
ControlNet B
Status
1734-ACNR
Field
Power
System
Power
2
43247A
Safety End Cap
Removable
Terminal
Block (RTB)
RTB Removal Handle
LED Indicators
Node Address
Thumbwheel
Coaxial Channel B
Coaxial Channel A
Network
Address
Port (NAP)
DIN Rail Locking
Screw (orange)

2
Publication 1734-IN582B-EN-P - February 2005
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 Rockwell Automation 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, Rockwell Automation 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 Rockwell Automation 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:

3
Publication 1734-IN582B-EN-P - February 2005
WARNING 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.
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.
BURN HAZARD Labels may be located on or inside the equipment
(e.g., drive or motor) to alert people that surfaces
may be dangerous temperatures.
S
HOCK HAZARD Labels may be located on or inside the equipment
(e.g., drive or motor) to alert people that
dangerous voltage may be present.

4
Publication 1734-IN582B-EN-P - February 2005
ATTENTION
Environment and Enclosure
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.

5
Publication 1734-IN582B-EN-P - February 2005
ATTENTION Preventing Electrostatic Discharge
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 wriststrap.
•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.
ATTENTION POINT I/O is grounded through the DIN rail to
chassis ground. Use zinc-plated, yellow-chromated
steel DIN rail to assure proper grounding. Using
other DIN rail materials (e.g., aluminum, plastic,
etc.) which can corrode, oxidize or are poor
conductors, can result in improper or intermittent
platform grounding.
WARNING When you connect or disconnect the Removable
Terminal Block (RTB) with field side power
applied, an electrical arc can occur. This could
cause an explosion in hazardous location
installations.
Be sure that power is removed or the area is
nonhazardous before proceeding.

6
Publication 1734-IN582B-EN-P - February 2005
Before You Begin
To effectively use your adapter, note the following considerations.
Understand Messaging
Class 3 (Explicit Message) requests through the 1734-ACNR adapter to
a specific POINT I/O module may not always receive a response
from the I/O module. In the case where the I/O module does not
reply to the request, the adapter responds with an error code
indicating a time-out.
Establish I/O Connections
When you power up a POINT I/O system and establish I/O
connections, the outputs transition to the Idle state, applying Idle
state data before going to RUN mode. This occurs even when the
controller making the connection is already in RUN mode.
Configure Autobaud
The adapter cannot reconfigure an I/O module that you previously
configured to operate at a fixed baud rate. When you reuse a POINT
I/O module from another POINT I/O system, configure the module
to autobaud before using it with the 1734-ACNR adapter.
For More Information
The following related publications are available online at URL
http://literature.rockwellautomation.com.
Publication Publication Number
POINT I/O ControlNet Adapter User Manual 1734-UM008
POINT I/O ControlNet Adapter Release Notes 1734-RN004

7
Publication 1734-IN582B-EN-P - February 2005
Install the ControlNet Adapter
To install the adapter on the DIN rail prior to installing other base
units, proceed as follows.
1. Position the adapter vertically above the DIN rail.
2. Press down firmly to install the adapter on the DIN rail. The
locking mechanism will lock the adapter to the DIN rail.
3. Set the node address on the node address thumbwheel.
4. Remove the safety end cap by sliding it up. This exposes the
backplane and power interconnections.
ATTENTION You must use Series C Point I/O modules with the
1734-ACNR. Series A and B Point I/O modules will
not work with the 1734-ACNR.
WARNING If you connect or disconnect the ControlNet
cable with power applied to this module or any
device on the network, an electrical arc can
occur. This could cause an explosion in
hazardous location installations.
Be sure that power is removed or the area is
nonhazardous before proceeding.
ATTENTION Do not discard the end cap. Use this end cap to
cover the exposed interconnections on the last
mounting base on the DIN rail. Failure to do so
could result in equipment damage or injury from
electric shock.

8
Publication 1734-IN582B-EN-P - February 2005
Set the Node Address
Set the node address using the 2-position thumbwheel switch. Valid
settings range from 01 to 99. Press the + or - buttons to change the
number.
Install a Replacement ControlNet Adapter to an Existing System
ATTENTION You must use Series C Point I/O modules with the
1734-ACNR. Series A and B Point I/O modules will
not work with the 1734-ACNR.
WARNING When you insert or remove the module while
backplane power is on, an electrical arc can occur.
This could cause an explosion in hazardous
location installations.
Be sure that power is removed or the area is
nonhazardous before proceeding. Repeated
electrical arcing causes excessive wear to contacts
on both the module and its mating connector.
Worn contacts may create electrical resistance that
can affect module operation.
Module
Status
PointBus
Status
ControlNet A
Status
1734-ACNR
ControlNet B
Status
Field
Power
System
Power
0
A
B
2
43248
Network Node
Address
thumbwheel
Press either the +
or - buttons to
change the
number.

9
Publication 1734-IN582B-EN-P - February 2005
1. Remove the existing adapter from the DIN rail as follows:
a. Disconnect the ControlNet connector from the adapter.
b. Pull up on the RTB removal handle to remove the terminal
block.
c. Remove the adjacent module from its base.
d. Use a small bladed screwdriver to rotate the DIN rail
locking screw to a vertical position. This releases the
locking mechanism.
e. Lift straight up to remove
2. Remove the safety end cap on the replacement adapter by
sliding it up. This exposes the backplane and power
connections.
3. Position the replacement adapter vertically above the DIN rail.
(Make certain the DIN rail lock is in the horizontal position.)
Slide the adapter down, allowing the interlocking side pieces
to engage the adjacent module.
4. Press firmly to seat the adapter on the DIN rail. The adapter
locking mechanism will snap into place.
5. Set the node address on the node address thumbwheel.
6. Insert the end opposite the handle into the base unit. This end
has a curved section that engages with the wiring base.
7. Rotate the terminal block into the wiring base until it locks
itself into place.
8. Replace the adjacent module in its base.
9. Connect the ControlNet cable to the adapter. Use a tap to
connect the adapter to the ControlNet cable. Do not directly
connect the adapter to the coax cable.

10
Publication 1734-IN582B-EN-P - February 2005
Wire the ControlNet Adapter
WARNING If you connect or disconnect the communications
cable with power applied to this module or any
device on the network, an electrical arc can occur.
This could cause an explosion in hazardous
location installations.
WARNING If you connect or disconnect wiring while the
field-side power is on, an electrical arc can occur.
This could cause an explosion in hazardous
location installations. Be sure that power is
removed or the area is nonhazardous before
proceeding.