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Allen-Bradley Manuals
Control Unit
1794-IE8H
User manual
Allen-Bradley 1794-IE8H User Manual
Flex i/o hart analog modules
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Contents
Table of Contents
Bookmarks
Table of Contents
Important User Information
North American Hazardous Location Approval
European Hazardous Location Approval
Table of Contents
About the Vocabulary
What this Manual Contains
Who Should Read this Manual
Why Read this Manual
For Additional Information
Chapter 1
Controllers
Events Following Power-Up
How FLEX I/O Analog Modules Communicate with Programmable
What the FLEX I/O Analog I/O Modules Do
What this Chapter Contains
Physical Features of Your Analog I/O Module
Indicators
Use Alarms on the 1794-IE8H Module
Data Format Alarm Example
Overrange Alarm
Underrange Alarm
Remote Fault Alarm
Local Fault Alarm
HART Implementation Overview
How to Use the HART Capabilities
Chapter Summary
Chapter 2
Select Your 1794-IE8H FLEX I/O Analog Input Module's Operating
What this Chapter Contains
Features
Fault Mode
Remote Transmitter Error up or down
High Low Error Level
Input Filter Cutoff
Data Format
Operating Features
Local Fault Mode
Latch Mode
Global Reset
Analog Digital State
Analog Fault State
Analog Fault State Value
Digital Fault State
Data Format
Fault Alarm
Select Your 1794-OE8H FLEX I/O Analog Output Module's
Understand Image Table Mapping and Bit/Word Descriptions
Bit Descriptions
Analog Input Module (1794-IE8H) Image Table Mapping
Bit/Word Description for the Analog Input Module
(1794-Ie8H)
Analog Output Module (1794-OE8H) Image Table Mapping
1794-IE8H and -OE8H Extended Configuration Data Table
Secondary Master Enable (SME) and Primary Master Inhibit (PMI)
Chapter Summary
Before You Install Your Analog Module
Chapter 3
What this Chapter Contains
Install the Module
Mount on a DIN Rail
Mount on a Panel or Wall
Mount the Analog Modules on the Terminal Base Unit
Removal and Insertion under Power
Connect Wiring to the FLEX I/O HART Analog Modules
Inputs/Outputs
Connections for the 1794-IE8H HART Analog Input Module on a 1794-TB3G Terminal Base Unit
Connections for the 1794-OE8H HART Analog Output Module on a 1794-TB3G or 1794-TB3GS Terminal Base Unit
Wire the Terminal Base Units
Ground the Module
Chapter Summary
What this Chapter Contains
About the Controlnet Adapter
Chapter 4
Use Programming Software in Your FLEX I/O Application
Communication over the FLEX I/O Backplane
Scheduled Data Transfer
Unscheduled Data Transfer
Module I/O Mapping
I/O Structure
Adapter Status Word
Fault State Data
Device Actions
Communication Fault Behavior
Idle State Behavior
Chapter Summary
Chapter 5
What this Chapter Contains
When and How to Calibrate Your FLEX I/O Analog I/O Module
1794-IE8H Calibration Features
Tools and Equipment
1794-IE8H Calibration Command Structure
1794-IE8H Calibration Command Byte
1794-IE8H Calibration Item Byte Channel-Mask
1794-IE8H Calibration with Offset and Gain
1794-OE8H Calibration Features
1794-OE8H Calibration Command Byte
Channel-Mask
1794-OE8H Calibration Item Byte Channel-Mask
1794-OE8H Calibration Flowchart Procedure
Chapter 6 Status Indicators
1794-IE8H Module
1794-OE8H Module
What this Chapter Contains
Chapter Summary
Repair
1794-IE8H HART Input Module
1794-OE8H HART Output Module
Appendix A
Appendix B
Protocol Overview
What this Appendix Contains
Universal Commands
Common Practice Commands
Device-Specific Commands
Appendix C
Transaction Procedure
Burst Mode (Not Supported
Message Structure
Master-Slave Operation
Multiple Master Operation
What this Appendix Contains
Universal Commands
Common Practice Commands
Appendix D
Communication
What this Appendix Contains
Differences between Attributes and Assembly Indexes
HART Frame Enhancements
Appendix E
Background Information
What this Appendix Contains
Configuration
Fault Mode
Filter Cutoff
Up/Down Bit
High and Low Error Level
Square Root Threshold
Input
Analog Input Data
Underrange Alarm
Overrange Alarm
Local Fault
Remote Fault
Diagnostic Status
Appendix F Background Information
Data Format Control
Analog Fault State
Fault Mode
Local Fault Mode
What this Appendix Contains
Latch Retry Mode
Analog/Digital Mode
Digital Fault State
Analog Fault State Values
Output
Digital Output Data
Global Output Data
Analog Output Data
Input
Diagnostic Status Data
HART Rebuild Bit
Fault Alarm
HART Failure
HART Readback
HART Communication
HART Transmitter
Index
Rockwell Automation Support
Installation Assistance
New Product Satisfaction Return
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Quick Links
1
What the Flex I/O Analog I/O Modules Do
2
Connect Wiring to the Flex I/O Hart Analog Modules
3
Wire the Terminal Base Units
4
Connections for the 1794-Ie8H Hart Analog Input Module on a 1794-Tb3G Terminal Base Unit
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FLEX I/O HART
Analog Modules
1794-IE8H and 1794-OE8H
User Manual
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