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148 Rockwell Automation Publication 1756-UM001O-EN-P - October 2014
Chapter 10 Develop Applications
Figure 27 - Elements of a Control Program
Tasks
A Logix5000 controller lets you use multiple tasks to schedule and prioritize the
execution of your programs based on criteria. This multitasking allocates the
controller’s processin time of the controller among the operations in your
application:
• The controller executes only one task at a time.
• One task can interrupt the execution of another and take control.
• In any given task, multiple programs can be used. However, only one
program executes at a time.
• You can display tasks in the Controller or Logical Organizer views, as
necessary.
Task 32
Task 1
Configuration
Status
Watchdog
Program 1000
Program 1
Main Routine
Fault Routine
Program (Local
Tags and
Parameters)
Other
Routines
I/O Data
System-shared Data
Controller Fault Handler
Controller (global) Tags
40012
- ControlLogix System 1
- Important User Information 2
- Summary of Changes 3
- New and Updated 3
- Information 3
- Table of Contents 5
- Chapter 4 6
- Chapter 5 6
- Communication Networks 6
- Controllers 7
- Appendix B 10
- History of Changes 10
- Studio 5000 Environment 11
- ControlLogix Controllers 11
- Overview 11
- Before You Begin 14
- Additional Resources 15
- . To order paper copies of 17
- Chapter 1 19
- 1756-L7x Controller Parts 21
- Installation 22
- Insert the Controller 23
- Insert the Key 24
- Install the SD Card 25
- Remove the SD Card 26
- –Leave an SD card installed 27
- 1784-SD1 or 1784-SD2) 27
- Install the ESM 28
- Uninstall the ESM 29
- Logix 55xx 31
- Chapter 2 33
- Logix 5563 35
- CompactFlash Card 36
- Installation and Removal 36
- Battery Connection 39
- Remove the Controller 44
- Start Using the Controller 45
- Connect to the 46
- Configure the USB Driver 47
- Virtual Chassis Driver 48
- USB Port Driver 48
- To Workstation 49
- To Controller 49
- To Workstation To Controller 49
- Configure the Serial Driver 50
- Upgrade Controller Firmware 52
- Obtain Controller Firmware 53
- 6. Click Yes 57
- The firmware upgrade begins 57
- Set the Communication Path 58
- Go Online with the Controller 58
- Download to the Controller 59
- Upload from the Controller 60
- Choose the Controller 62
- Operation Mode 62
- Load or Store to the 65
- Memory Card 65
- Load from the Memory Card 68
- Use ControlLogix Energy 70
- Storage Modules (ESMs) 70
- Estimate the ESM Support 72
- Maintain the Battery (Only 72
- 1756-L6x Controllers) 72
- Battery Storage and Disposal 77
- Design a ControlLogix System 81
- ControlLogix Controller 82
- Features 82
- Memory Options 83
- Electronic Keying 84
- POINT I O 86
- ControlNet Network 89
- DeviceNet Network 92
- Data Highway Plus (DH+) 95
- Network Communication 95
- Universal Remote I/O (RIO) 97
- Foundation Fieldbus 98
- HART Communication 99
- Chapter 6 101
- 1756-L6x Controller 102
- Serial Port 102
- Communication with 103
- Serial Devices 103
- DF1 Master Protocol 104
- DF1 Point to Point Protocol 105
- DF1 Radio Modem Protocol 106
- DF1 Radio Modem Limitations 107
- DF1 Slave Protocol 109
- DH-485 Protocol 110
- EXTERNAL 111
- ASCII Protocol 112
- Configure the 1756-L6x 113
- Controller for Serial 113
- Communication 113
- Broadcast Messages Over 115
- Modbus Support 118
- Chapter 7 119
- Connection Overview 119
- Produce and Consume 119
- (Interlock) Data 119
- Send and Receive Messages 121
- Calculate Connection Use 122
- Local Connections 123
- Remote Connections 123
- Connections Example 124
- I/O Modules 127
- Remote I/O Modules 129
- Chapter 8 I/O Modules 130
- I/O Modules Chapter 8 131
- Distributed I/O 132
- Reconfigure an I/O Module 135
- Add to the I/O Configuration 137
- While Online 137
- Determine When Data is 141
- Develop Motion Applications 143
- Motion Overview 144
- Obtain Axis Information 144
- Program Motion Control 145
- Develop Applications 147
- Figure 29 - Tasks 149
- Programs 151
- Figure 33 - Programs 152
- Routines 154
- Parameters and Local Tags 155
- Extended Properties 156
- Programming Languages 158
- Add-On Instructions 159
- Access the Module Object 160
- Monitoring Controller Status 161
- Monitoring I/O Connections 162
- Timed Out 163
- I/O Module Properties 164
- System Overhead Time Slice 165
- Sample Controller Projects 167
- Using the PhaseManager Tool 169
- Minimum System 171
- Requirements 171
- State Model Overview 171
- How Equipment Changes States 172
- Manually Change States 173
- PhaseManager Tool versus 174
- Other State Models 174
- Equipment Phase 174
- Instructions 174
- Redundant Systems 175
- System Requirements 177
- System Considerations 178
- Build a Redundant System 179
- ControlNet Considerations 180
- EtherNet/IP Considerations 180
- Redundancy and Scan Time 181
- Chapter 12 Redundant Systems 182
- Troubleshoot the Module 183
- Fault Type Determination 185
- 1756-L7x Controller Status 186
- Display and Indicators 186
- 1756-L7x Controller 186
- Status Display 186
- Fault Messages 187
- Table 49 - Fault Messages 188
- Major Fault Messages 189
- I/O Fault Codes 191
- Status Indicators 195
- 1756-L6x Status Indicators 196
- I/O Indicator 197
- FORCE Indicator 197
- RS232 Indicator 197
- BAT Indicator 198
- OK Indicator 198
- No changes documented 201
- Revision not published 202
- Numerics 203
- Rockwell Automation Support 212
- Documentation Feedback 212
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