A-B 1783-HMS4SG8EG4CGN Stratix 5400 Ethernet Managed Switches

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. 

Remote Input Modules

Connected Via a ControlNet

Network

When remote analog I/O modules are connected to the owner-controller via a scheduled

ControlNet network, the RPI and RTS intervals still define when the module multicasts data

within its own chassis (as described in the previous section). However, only the value of the

RPI determines how often the owner-controller receives it over the network.

When an RPI value is specified for an input module in a remote chassis that is connected by a

scheduled ControlNet network, the RPI also ‘reserves’ a spot and instructs the module to

multicast data within its own chassis.

Whether the timing of this ‘reserved’ spot coincides with the exact value of the RPI, the control

system helps the owner-controller receive data at least as often as the specified RPI.

This illustration shows that the input data within the remote chassis is multicast at the

configured RPI. The ControlNet bridge module sends input data back to the owner-controller at

least as often as the RPI.

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