Spectrum-controls 1756sc-CTR8 User Manual Page 24
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Operation Within the
ControlLogix System
This chapter describes how the 1756sc-CTR8 analog module works
within the ControlLogix system. This chapter covers:
• Ownership and connections to the module
• Direct connections
• Listen only mode
• Configuration changes with multiple owners.
Ownership and
Connections
Every I/O module in the ControlLogix system must be owned by a
Logix5550 Controller to be useful. This owner-controller stores
configuration data for every module that it owns and can be local or
remote in regard to the I/O module’s position. The owner sends the I/O
module configuration data to define the module’s behavior and begin
operation within the control system. Each ControlLogix I/O module must
continuously maintain communication with its owner to operate normally.
Typically, each module in the system will have only 1 owner. Input
modules can have more than 1 owner. Output modules, however, are
limited to a single owner.
Using RSNetWorx
and RSLogix 5000
The I/O configuration portion of RSLogix5000 generates the
configuration data for each I/O module in the control system, whether
the module is located in a local or remote chassis. A remote chassis, also
known as networked, contains the I/O module but not the module’s
owner controller. Configuration data is transferred to the controller during
the program download and subsequently transferred to the appropriate I/
O modules. I/O modules in the same chassis as the controller are ready
to run as soon as the configuration data has been downloaded. You must
run RSNetWorx to enable I/O modules in the networked chassis.
Running RSNetWorx transfers configuration data to networked modules
and establishes a Network Update Time (NUT) for ControlNet that is
compliant with the desired communications options specified for each
module during configuration. If you are not using I/O modules in a
networked chassis, running RSNetWorx is not necessary. However,
anytime a controller references an I/O module in a networked chassis,
RSNetWorx must be run to configure ControlNet. Follow these general
guidelines when configuring I/O modules:
Chapter 3
- Catalog Number: 1756sc-CTR8 1
- Important Notes 3
- Terms & 6
- Abbreviations You 6
- Should Know 6
- Preface vii 7
- Table of Contents 9
- Module Overview 11
- Chapter 1 11
- System Overview 12
- 4 ControlLogix 14
- Counter Module 14
- Electrostatic 15
- Requirements 15
- Module Installation 16
- Wiring Your Module 19
- Wiring Single-ended 21
- Wiring Bi 22
- Directional or 22
- Quadrature Inputs 22
- Operation Within the 24
- ControlLogix System 24
- Chapter 3 24
- Requested Packet 26
- Interval (RPI) 26
- Modules in a 26
- Remote Chassis 26
- Listen-Only Mode 27
- Multiple Owners of 27
- Input Modules 27
- Configuration 28
- Changes in an 28
- Input Module with 28
- Multiple Owners 28
- Programming Your Module 30
- Chapter 4 30
- 22 ControlLogix 32
- 24 ControlLogix 34
- Configuring module 35
- Configuration Tags 35
- Data Tags 36
- Status Tags 36
- Configuration, Data 38
- Chapter 5 38
- Channel Specific 39
- Settings 39
- 30 ControlLogix 40
- 32 ControlLogix 42
- Output Tags 44
- Input Tags 44
- CST DINT 46
- Programming Examples 48
- Chapter 6 48
- Set Attribute All message: 50
- Using the gate 51
- 42 ControlLogix 52
- Installation 53
- Recommendations 53
- 1 2 3 4 NA 54
- Troubleshooting 56
- Chapter 7 56
- Using RSLogix 5000 57
- Your Module 57
- Configuration Errors 58
- Maintaining Your Module 60
- And Ensuring Safety 60
- Chapter 8 60
- Module Specifications 64
- Appendix A 64
- Environmental 65
- Specifications 65
- Input Specifications 65
- AccuracyAccuracy 66
- Accuracy 66
- Appendix B 68
- 60 ControlLogix 70
- 62 ControlLogix 72
- Getting Technical 73
- Assistance 73
- Declaration of 73
- Conformity 73
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