Connect to Local I/O

The ControlLogix chassis affects how many local I/O modules you can use. Several ControlLogix chassis sizes are available to suit your configuration requirements.
ControlLogix, ControlLogix-XT, and ControlLogix-ZXT Chassis and Slots
Chassis
Slots
1756-A4
4
1756-A7, 1756-A7XT, 1756-A7ZXT
7
1756-A10, 1756-A10XT, 1756-A10ZXT
10
1756-A13
13
1756-A17
17
If you have empty slots in your chassis, you can use the 1756-N2 or 1756-N2XT slot-filler module.
Add I/O modules to the backplane of the controller. There are two methods to add I/O modules to the local chassis:
  • Discover modules
  • Add new modules
Some safety I/O devices support both standard and safety data. The device definition settings define what data is available
For instructions about how to add I/O to the I/O configuration in a controller project, see the user manual for your I/O device.
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