Rockwell-automation Logix5000 Controllers I/O and Tag Data Programming Manuel d'utilisateur télécharger pdf (Page 18)

Chapter 1 Communicate with I/O modules

I/O information is presented as a set of tags.

• Each tag uses a structure of data. The structure depends on the specific

features of the I/O module.

• The name of the tag is based on the location of the I/O module in the

system.

• When you add a module to the I/O Configuration folder, the software

automatically creates controller-scoped tags for the module in Controller

Tags.

An I/O address uses this format:

Where Is

Location Network location

LOCAL = same chassis or DIN rail as the controller

ADAPTER_NAME = identifies remote communication adapter or bridge module

Slot Slot number of I/O module in its chassis or DIN rail

Type Type of data

I = input

O = output

C = configuration

S = status

Member Specific data from the I/O module; depends on what type of data the module can store.

• For a digital module, a Data member usually stores the input or output bit values.

• For an analog module, a Channel member (CH#) usually stores the data for a channel.

Address I/O data

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Rockwell-automation Logix5000 Controllers I/O and Tag Data Programming Manuel d'utilisateur Page 18