Using rsnetworx and rslogix 5000 software – Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules User Manual
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Publication 1756-UM009C-EN-P - December 2010
Chapter 2
Analog I/O Operation in the ControlLogix System
Typically, each module in the system will have one owner only. Input modules
can have more than one owner. Output modules, however, are limited to a
single owner.
For more information on the increased flexibility provided by multiple owners
and the ramifications of using multiple owners, see
Input Module with Multiple Owners
on
.
Using RSNetWorx and
RSLogix 5000 Software
The I/O configuration portion of the RSLogix5000 programming software
generates the configuration data for each I/O module in the control system,
whether the module is in a local or remote chassis. A remote chassis, also
known as networked, contains the I/O module but not the module’s
owner-controller. A remote chassis can be connected to the controller via a
scheduled connection on the ControlNet network or an
EtherNet/IP network.
RSLogix 5000 configuration data is transferred to the controller during the
program download and subsequently transferred to the appropriate I/O
modules. I/O modules in the local chassis, and modules in a remote chassis
connected via the EtherNet/IP network, or unscheduled connections on the
ControlNet network, are ready to run as soon as the configuration data has
been downloaded. However, to enable scheduled connections to I/O modules
on the ControlNet network, you must schedule the network by using
RSNetWorx for ControlNet software.
Running RSNetWorx software transfers configuration data to I/O modules on
a scheduled ControlNet network and establishes a network update time (NUT)
for the ControlNet network that is compliant with the desired communication
options specified for each module during configuration.
Anytime a controller references a scheduled connection to I/O modules on a
scheduled ControlNet network, you must run RSNetWorx software to
configure the ControlNet network.
Refer to the following general steps when configuring I/O modules.
1. Configure all I/O modules for a given controller by using RSLogix 5000
programming software and download that information to the controller.
2. If the I/O configuration data references a scheduled connection to a
module in a remote chassis connected via the ControlNet network, run
RSNetWorx for ControlNet software to schedule the network.