Set Subnet/Backplane Baudrate; Set Subnet/Backplane I/O Module Addresses; Confi Gure The Subnet I/O; Confi Gure The Primary Devicenet Network - Parker H Series Installation & Service Instructions Manual

2-2 What is the H Series Fieldbus DeviceNet Adapter?

1. Set Subnet/Backplane Baudrate

The adapter and Subnet/Backplane modules must use the same
baudrate to communicate with each other. Use one or both of the
following to set a Subnet/Backplane baudrate.
• Enable or disable the Backplane Autobaud feature for H
Series Fieldbus I/O modules. H Series Fieldbus I/O modules
have Autobaud enabled as the default - See page 2-5.
• Set the adapter baudrate for the Subnet. The default for the
PSSCDM12A and PSSCDM18PA is 1Mbaud.
You set the backplane baudrate for the PSSCDM12A and
PSSCDM18PA.

2. Set Subnet/Backplane I/O Module Addresses

Once the adapter and H Series Fieldbus I/O modules are
communicating at the same rate on the backplane, you must make
sure all modules use a valid MACID.
Set the Auto Address feature for H Series Fieldbus I/O modules - See
page 2-5.
3. Confi gure the Subnet I/O
In the fi rst two steps, you set a consistent communication rate and
made sure each module uses valid addresses for communication.
Next you must confi gure the PointBus (e.g., set scan list).
You can confi gure the PointBus using one of two methods:
• Auto Start Mode (ASM) or
• Manually For more information on confi guring the PointBus,
see Chapter 3 for ASM or see Chapter 4 for manual
confi guration.
4. Confi gure the Primary DeviceNet Network
Finally, you must confi gure the adapter for communication with a
master (e.g., Rockwell Automation 1756-DNB).
For more information on confi guring the DeviceNet network, see
Chapter 5, Add the H Series Fieldbus DeviceNet Adapter to the
DeviceNet Scanner's Scanlist.
You must understand all of the adapter's features to effectively use it
in your H Series Fieldbus I/O system. Keep these four steps in mind
as you read this manual:
1. Set Subnet/Backplane Baudrate
2. Set Subnet/Backplane I/O Module Addresses
3. Confi gure the Subnet I/O
4. Confi gure the Primary DeviceNet Network
Publication PSS-UM001A-EN-P – December 2016

Remove and Reinsert Modules on the Backplane

Removal and Insertion Under Power (RIUP) is not recommended in
a H Series Fieldbus System because of the following reasons.
• Removing a module breaks the IP67 seal.
• Removing a module breaks the backplane bus. Modules to
the right of the removed module will be 'lost' to the adapter.
Also, the terminating resistor will be removed, causing system
uncertainty.
• Inserting a module under power may cause the adjacent
module to reset due to the addition of a large capacitive load
on the power bus.
IMPORTANT
If the module is removed while it is under power, all the modules
to the right of the removed module will disconnect from the
PointBus and fi eld power until the module is reinstalled.
If you must remove and reinsert modules, we recommend the
following:
• Do not move I/O modules to different locations on the
mounting base after they have been installed and confi gured.
• If adjacent modules (i.e., 2 or more) are removed from the
backplane, replace all of them before attempting to operate
the H Series Fieldbus I/O system. Input data will hold last
state until all previously removed modules are replaced.
– If adjacent modules are removed and all but one is
returned, the adapter cannot verify the location of the
returned modules. For example, if modules are removed
from nodes 3 and 4 and only the module from node 4 is
returned, the adapter cannot verify the location. In this
case, the adapter alerts you via a fl ashing red PointBus
status LED that it cannot verify the presence of modules in
the affected locations. I/O data will not be exchanged with
this node until both modules have been reinserted.
– If modules of different types are removed and returned
to the wrong locations, the adapter identifi es the returned
modules and alerts you (via RSNetWorx for DeviceNet) that
the error has occurred and must be corrected.
– If modules of the same type are removed and returned
to the wrong locations, the adapter identifi es the returned
modules, updates their MACIDs, and continues operation.
IMPORTANT
The removal and return scenario exists whether the system is
under power or not. If the system is under power, the scenario
arises immediately. If the system is not under power, the
scenario arises in the next power cycle. Also, the example above
shows removal of two adjacent modules. The scenario described
exists anytime 2 or more adjacent modules are removed and
all are not returned.
IMPORTANT
Care must be taken when replacing backplane I/O modules.
Each I/O module stores its confi guration parameters in internal
non-volatile memory. You must either enable ADR for all modules
or manually confi gure each module in a non-manufacturing
environment when the module is being replaced or placed on
the network for the fi rst time. Failure to do so could result in
inadvertent control attributed to different confi guration settings.