Specifications

1768-SG001A-EN-P -- March 2006

CompactLogix Selection Guide

1769 Compact I/O Modules

The 1769 Compact I/O modules can be used as local I/O for a CompactLogix controller.

Install the I/O modules on a panel with two mounting screws or on a DIN rail. The

modules mechanically lock together by means of a tongue-and-grove design and have an

integrated communication bus that is connected from module to module by a moveable

bus connector.

Each I/O module includes a built-in removable terminal block with finger-safe cover for

connections to I/O sensors and actuators. The terminal block is behind a door at the front

of the module. I/O wiring can be routed from beneath the module to the I/O terminals.

Step 1 - Select:

I/O modules

1492 wiring system (if you want to use a

wiring system instead of the terminal

block that comes with module)

PanelConnect modules and cables if

connecting input modules to sensors

1769-CRLx expansion cables for multiple

banks of I/O modules

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The 1768 CompactLogix controller supports as many as 16 local 1769 I/O modules

(maximum of 32 points per digital module and 8 points per analog module). As many as

eight of the local modules can be attached to the 1768 backplane. The remaining eight

modules can be in one or two additional I/O banks. The additional banks are powered by

standard 1769 power supplies (that is, 1769-PA4) and connect to the main rack using

standard 1769 extension cables (that is, 1769-CRLx).

For the best local I/O performance in a 1768 CompactLogix system:

y configure an individual RPI for each local 1769 I/O module.

y you can select individual RPIs as fast as 1 millisecond.

y use faster RPIs for time critical I/O without impacting overall 1769 I/O performance.

y use Immediate Output (IOT) instructions for further reduction in I/O update times.

I/O update times do not affect overall 1768 bus performance, such as motion performance

or controller performance.

Each 1769 I/O module has a distance rating. In 1769 systems, the distance rating is the

number of modules between the specific module and the 1769 power supply. In a 1768

system, the distance rating is the number of modules between the specific I/O module

and the 1768 controller.