Allen-Bradley 1794-IE8 Series B

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New Information3
- Addition of Devicenet Mapping3
- Additional Flex I/O Modules3
- I/O Mapping3
Revised Information3
Change Bars3
Table of Contents4
Using this Manual8
Purpose of this Manual8
Audience8
Vocabulary8
Manual Organization8
Publication 1794 6.5.2 - May9
Conventions9
For Additional Information9
Overview of FLEX I/O and Your Analog Modules10
Chapter Objectives10
The FLEX I/O System10
Types of FLEX I/O Modules11
How FLEX I/O Analog Modules Communicate with Programmable Controllers11
Features of Your Analog Modules13
Chapter Summary13
How to Install Your Analog Module14
Chapter Objectives14
Before You Install Your Analog Module14
Compliance to European Union Directives14
- EMC Directive14
- Low Voltage Directive15
Power Requirements15
Installing the Module17
- Mounting the Terminal Base Unit on a DIN Rail17
- Panel/Wall Mounting18
- Mounting the Analog Module on the Terminal Base Unit20
Module Programming27
Chapter Objectives27
Block Transfer Programming27
Sample Programs for Flex I/O Analog Modules28
- PLC 3 Programming28
PLC 5 Programming30
- Figure 3.430
- PLC 5 Family Sample Program Structure for the 1794 IE830
- PLC 5 Family Sample Program Structure for the 1794 OE430
- Figure 3.631
- PLC 5 Family Sample Program Structure for the 1794 IE4XOE231
PLC 2 Programming31
Analog Data Format32
Chapter Summary32
Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter33
Chapter Objectives33
Configuring Your Analog Module33
Range Selection34
Safe State Value Selection34
Data Format34
Reading Data from Your Module34
Mapping Data for the Analog Modules35
- Input Analog Module (Cat. No. 1794 IE8 Series B)35
- Output Analog Module (Cat. No. 1794 OE4 Series B)38
- Input/2 Output Analog Combo Module (Cat. No. 1794 IE4XOE2 Series B)41
Chapter Summary44
How Communication Takes Place and I/O Image Table Mapping with the Devicenet Adapter45
Chapter Objectives45
About Devicenet Manager45
Polled I/O Structure45
- Adapter Input Status Word46
Mapping Data into the Image Table47
- Input Analog Module (Cat. No. 1794 IE8 Series B) Image Table Mapping47
- Output Analog Module (1794 OE4 Series B) Image Table Mapping50
- Analog Combo Module (1794 IE4XOE2 Series B) Image Table Mapping53
Defaults56
Specifications57
Differences between Series a and Series B Analog Modules63
Data Table Formats64
Two's Complement Binary64
Analog Data Format65
- Scaling Example66
Support Services72
- Technical Support72
- Engineering and Field Services72
- Technical Training72
- Repair and Exchange Services72

Allen-Bradley 1794-IE8 Series B

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