Name: Allen-Bradley 1794ASB Series B
Brand: Allen-Bradley
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Summary of ChangesSOC–2

Publication

17946.5.3 - May 1996

I/O Mapping

I/O mapping for the series B versions of the analog modules has

been added. In addition, the 1794-IR8 and 1794-IT8 module I/O

mapping is also included.

Change Bars

The areas in this manual which are different from previous editions

are marked with change bars (as shown next to this paragraph) to

indicate the addition of new or revised information.

Table of Contents5
Specifications8
Using this Manual8
Preface Objectives8
Audience8
Vocabulary8
What this Manual Contains8
Conventions9
For Additional Information9
Summary9
Overview of FLEX I/O and Your Remote I/O Adapter Module10
Chapter Objectives10
The FLEX I/O System10
How FLEX I/O Modules Communicate with Programmable Controllers11
Hardware Components12
- Diagnostic Indicators12
- Reset Pushbutton13
- Remote I/O Wiring13
- Power Wiring13
- Address Switch Assemblies13
Chapter Summary13
Installing Your Remote I/O Adapter Module14
Chapter Objectives14
European Union Directive Compliance14
- EMC Directive14
- Low Voltage Directive14
Power Requirements15
Mounting the Remote I/O Adapter15
- Mounting on the DIN Rail15
- Mounting on a Wall or Panel16
Wiring18
Setting the Switches19
- Starting I/O Group19
- I/O Rack Number19
- Hold Inputs19
- Last Chassis19
- Reply Delay19
- Communication Rate20
- Processor Restart Lockout20
- Hold Last State20
Communicating with FLEX I/O Modules24
Chapter Objectives24
Hardware Addressing24
Determining Rack Size25
Mapping Data into the Image Tables27
- Discrete I/O Modules27
- 16 Point Discrete Input Module Image Table Mapping - 1794 IB1628
  - Input Delay Times for the 1794 IB16 Input Module28
- Point Discrete Output Module Image Table Mapping - 1794 OB1629
  - Memory Map of 16 Point Discrete Output Module Image Table - 1794 OB1629
- Point Discrete Input Module Image Table Mapping - 1794 IB8S29
  - Memory Map of 8 Point Discrete Input Module Image Table (with Status) - 1794 IB8S29
  - Input Delay Times for the 1794 IB8S Input Module30
- Point Discrete Input/Output Module Image Table Mapping - 1794 IB10XOB630
  - Memory Map of 16 Point Discrete Input/Output Module Image Table - 1794 IB10XOB630
- Point Discrete Input Module Image Table Mapping - 1794 IA831
  - Memory Map of 8 Point Discrete Input Module Image Table - 1794 IA831
  - Input Delay Times for the 1794 IA8 Input Module31
- Point Discrete Output Module Image Table Mapping - 1794 OA832
  - Memory Map of 8 Point Discrete Output Module Image32
- Point Discrete Relay Output Module Image Table Mapping - 1794 OW832
- Analog I/O Modules33
- Input Analog Module (Cat. No. 1794 IE8 Series B)34
- Output Analog Module (Cat. No. 1794 OE4 Series B)35
- Input/2 Output Analog Combo Module (Cat. No. 1794 IE4XOE2 Series B)37
- RTD Input Module (1794 IR8) Image Table Mapping39
  - RTD Analog Input Module (1794 IR8) Read Words39
  - RTD Analog Input Module (1794 IR8) Write Words40
- Thermocouple/MV Input Module (1794 IT8) Image Table Mapping40
  - Thermocouple/MV Input Module (1794 IT8) Read40
  - Thermocouple/MV Input Module (1794 IT8) Write41
Operating Modes41
Chapter Summary41
Troubleshooting42
Chapter Objectives42
Fault Conditions42
Troubleshooting with the Indicator Lights42
- Remote I/O System Troubleshooting Guide43
- Table 4.A Remote I/O System Troubleshooting Guide43
Chapter Summary44
Specifications45
Support Services51
- Technical Support51
- Engineering and Field Services51
- Technical Training51
- Repair and Exchange Services51

Allen-Bradley 1794ASB Series B User Manual

Table of Contents

Questions and Answers:

Allen-Bradley 1794ASB Series B Specifications

Related product manuals

Brand	Allen-Bradley
Model	1794ASB Series B
Category	Adapter
Language	English

Allen-Bradley 1794ASB Series B User Manual

Table of Contents

Questions and Answers:

Allen-Bradley 1794ASB Series B Specifications

Related product manuals

Allen-Bradley 1794ASB Series B User Manual

Allen-Bradley 1794ASB Series B Specifications