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Module Overview
This chapter describes the universal analog input module and explains how
the ControlLogix controller reads analog input data from the module. Read
this chapter to familiarize yourself further with your universal analog input
module. This chapter covers:
• general description and hardware features
• an overview of system and module operation
General Description
This module is designed exclusively for use in the Allen-Bradley
ControlLogix 1756 I/O rack systems. The module stores digitally
converted thermocouple, RTD, resistance, millivolt (mV), volt (V),
milliamp (mA), and CJC temperature analog data in its image table for
retrieval by all ControlLogix processors.
Following is a list of features available on the IF8u module that allow their
use in a wide variety of applications.
· Removal and insertion under power (RIUP) - a system feature that
allows you to remove and insert modules while chassis power is applied
· Producer/consumer communications - an intelligent data exchange
between modules and other system devices in which each module
produces data without having been polled
· Rolling timestamp of data - 15 bit module-specific rolling timestamp with
millisecond resolution which indicates when data was sampled/applied.
This timestamp may be used to calculate the interval between channel or
updates
· System timestamp of data - 64 bit system clock places a timestamp on
the transfer of data between the module and its owner controller within
the local chassis
· IEEE 32 bit floating point format
· On-Board Features, such as custom User Scaling, Process Alarms, Rate
Alarms, Digital Filtering, and Under/Overrange Detection
· Automatic Calibration - analog I/O modules may perform autocalibration
on a channel-by-channel or module-wide basis to reduce drift inaccuracies
due to module ambient temperature changes.
· Class I/Division 2, UL, CSA, CE, and FM Agency Certification
Chapter 1
- NIVERSAL 1
- Important Notes 3
- Terms & 6
- Abbreviations You 6
- Should Know 6
- Preface vii 7
- Table of Contents 9
- Module Overview 13
- Chapter 1 13
- Detailed 14
- Specifications 14
- Hardware Features 15
- Diagnostic LEDs 16
- System Overview 16
- System Operation 17
- Module Operation 17
- Compatibility with 18
- Thermocouple 18
- Current, and Millivolt 18
- Devices & Cables 18
- 8 ControlLogix 20
- Counter Module 20
- Chapter 2 21
- Requirements 22
- Module Installation 22
- 12 ControlLogix 24
- Wiring Your Module 26
- Preparing and 27
- Wiring the Cables 27
- Terminal Block 28
- Wiring Voltage/ 29
- Current Inputs the 29
- IF8u Module 29
- Wiring RTD or 30
- Resistance Sensors 30
- White (With Potted Sensor) 32
- White (No Sensor) 32
- 22 ControlLogix 34
- Operation Within the 35
- ControlLogix System 35
- 24 ControlLogix 36
- Requested Packet 37
- Interval (RPI) 37
- Modules in a 37
- Remote Chassis 37
- Listen-Only Mode 38
- Multiple Owners of 38
- Input Modules 38
- Configuration 39
- Changes in an 39
- Input Module with 39
- Multiple Owners 39
- 28 ControlLogix 40
- Chapter 4 41
- 30 ControlLogix 42
- 32 ControlLogix 44
- Configuring module 46
- Configuration Tags 46
- Status Tags 48
- Configuration, Data 49
- Chapter 5 49
- Global Module 50
- Settings 50
- -25 to +65 degC REAL 51
- 42 ControlLogix 54
- Channel Specific 55
- 44 ControlLogix 56
- 46 ControlLogix 58
- 48 ControlLogix 60
- Input Tags 62
- Fault and Status 62
- Reporting Tags 62
- 52 ControlLogix 64
- Module Data Tags 65
- 54 ControlLogix 66
- Programming Examples 67
- Chapter 6 67
- 56 ControlLogix 68
- Set Attribute All message: 70
- Module Reconfigure Message: 70
- 60 ControlLogix 72
- Chapter 7 73
- Troubleshooting 73
- Using RSLogix 5000 74
- Your Module 74
- Determining Fault Type 75
- Configuration Errors 76
- Maintaining Your Module 77
- And Ensuring Safety 77
- Chapter 8 77
- 68 ControlLogix 80
- Module Specifications 81
- Appendix A 81
- Thermocouple Descriptions 87
- Appendix B 87
- 76 ControlLogix 88
- Thermocouples 89
- 78 ControlLogix 90
- 80 ControlLogix 92
- 82 ControlLogix 94
- 88 ControlLogix 100
- References 102
- 92 ControlLogix 104
- 94 ControlLogix 106
- 96 ControlLogix 108
- Using Grounded Junction 109
- Junction Thermocouples 109
- Appendix C 109
- Isolation 110
- 100 ControlLogix 112
- Programming Your Module 113
- Appendix D 113
- 102 ControlLogix 114
- 104 ControlLogix 116
- Getting Technical 117
- Assistance 117
- Declaration of 117
- Conformity 117
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