Manual

Publication 1756-UM009C-EN-P - December 2010 35
Chapter 3
ControlLogix Analog I/O Module Features
Introduction
This chapter describes features that are common to all ControlLogix analog
I/O modules.
ControlLogix analog input modules convert an analog signal of either volts,
millivolts, milliamps, or ohms that is connected to the module's screw
terminals into a digital value.
The digital value that represents the magnitude of the analog signal is then
transmitted on the backplane to either a controller or other control entities.
ControlLogix output modules convert a digital value that is delivered to the
module via the backplane into an analog signal of -10.5…10.5 volts
or 0…21 milliamps.
The digital value represents the magnitude of the desired analog signal. The
module converts the digital value into an analog signal and provides this signal
on the module's screw terminals.
Common Analog
I/O Features
The following table lists common features for analog I/O modules.
Feature Page
Removal and Insertion Under Power (RIUP) 36
Module Fault Reporting 36
Configurable Software 36
Electronic Keying 37
Access to System Clock for Timestamp Functions 44
Rolling Timestamp 44
Producer/Consumer Model 44
Status Indicator Information 45
Full Class I Division 2 Compliance 45
Agency Certification 45
Field Calibration 45
Sensor Offset 46
Latching of Alarms 46