Rockwell Automation Logix5000 Logix5000 Controllers Quick Start - Manual (Page 17)

Publication 1756-QS001E-EN-P - October 2009 17
Program and Test a Simple Project Chapter 1
Look at Your I/O Data
I/O information is presented as a set of tags.
An I/O address follows this format.
Location :Slot :Type .Member .SubMember .Bit
= Optional
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.
SubMember Specific data related to a Member.
Bit Specific point on a digital I/O module; depends on the size of the I/O module (0-31 for a 32-point module)
When you add a module to the I/O
Configuration folder…
…the software automatically creates
controller-scoped tags for the module.