A-B 1756-L63XT Module Rockwell ControlLogix XT 8 MB Memory Control

1756 ControlLogix-XT Controllers

The ControlLogix-XT™ controllers function in the same way as the traditional ControlLogix controllers.

The ControlLogix-XT products include control and communication system components that are conformally coated

for extended protection in harsh, corrosive environments:

• When used with FLEX I/O-XT™ products, the ControlLogix-XT system can withstand temperature ranges of -20…+70 °C (-4…+158 °F).

• When used independently, the ControlLogix-XT system can withstand temperature ranges of -25…+70 °C (-13…+158 °F).

• Customers who previously used the LXT chassis should now migrate to the K version of the chassis.

1756 ControlLogix Controllers

The ControlLogix® controller provides a scalable controller solution that is capable of addressing many I/O points. You

can place the ControlLogix controller into any slot of a ControlLogix I/O chassis, and install multiple controllers in the

same chassis.

ControlLogix controllers can monitor and control I/O across the ControlLogix backplane, and over network links. The

ControlLogix 5580 controllers have an embedded Ethernet port for a direct connection to Ethernet-enabled devices and

networks, and also support communication interface modules in the local chassis. To provide communication for

ControlLogix 5570 or ControlLogix 5560 controllers, install the appropriate communication interface module into the

local chassis.

ControlLogix 5580 and ControlLogix 5570 controllers are available with a conformal coating. A conformal coating

provides a layer of protection against contaminants and humidity to help protect the assembly and extend product life in

harsh, corrosive environments. Products with a conformal coating have a ‘K’ suffix at the end of the catalog number. 

IMPORTANT

You must run RSNetWorx for ControlNet software whenever a new I/O module is added to a scheduled ControlNet chassis. 

When a module is permanently removed from a remote chassis, 

we recommend that you run RSNetWorx for ControlNet software to reschedule the network and optimize the allocation of network bandwidth. 

The I/O configuration portion of the RSLogix 5000® 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 later 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.

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