Rockwell Automation 1756-OF8I ControlLogix Eight-channel Isolated Analog I/O Modules - Manual (Page 9)

Rockwell Automation Publication 1756-UM540A-EN-P - May 2014 9
Chapter
1
Isolated Analog I/O Module Operation in the
ControlLogix System
ControlLogix controllers use isolated analog I/O modules to control devices in a
ControlLogix control system. The modules are installed in a ControlLogix
chassis and use a removable terminal block (RTB) or a Bulletin 1492 interface
module
(1)
cable to connect to field-side wiring.
The modules use the producer/consumer network communication model. This
communication is an intelligent data exchange between modules and other
system devices in which each module produces data without first being polled.
Before You Begin Before you install and use your module, complete the following tasks:
• Install and ground a 1756 ControlLogix chassis and power supply
(2)
. You
can use a standard power supply or a redundant power supply.
For more information on installing 1756 ControlLogix chassis and power
supplies, see
Additional Resources on page 8 .
Topic Page
Before You Begin 9
Ownership 11
Configure a Module 11
Direct Connections 12
Input Module Operation 14
Output Module Operation 17
Listen-only Mode 18
(1) The ControlLogix system has been agency certified using only the ControlLogix RTBs (catalog numbers 1756-TBCH, 1756-TBNH,
1756-TBSH and 1756-TBS6H). Any application that requires agency certification of the ControlLogix system using other wiring
termination methods can require application specific approval by the certifying agency.
(2) In addition to standard ControlLogix power supplies, ControlLogix Redundant Power Supplies are also available for your application.
For more information on these supplies, see the ControlLogix Selection Guide, publication 1756-SG001 , or contact your local
distributor or Rockwell Automation representative.