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Using Block Transfer Messaging 5-7
20-COMM-R Remote Adapter I/O User Manual
Publication 20COMM-UM004D-EN-P
ControlLogix Controller
Example
Data Format for a Read and Write Parameter
The data in this example is for a PowerFlex 70 drive at Remote I/O rack.
The following set of arrays shows a read of drive parameter 1 - [Output
Freq]. The value of parameter 1 is 213 (21.3 Hz).
MsgBlockTransferWrite (Request Data) to Read Drive Parameter 1 (Hex)
MsgBlockTransferRead (Response Data) to Read Drive Parameter 1 (Hex)
The following set of data files shows a write of drive parameter 41 [Motor
NP Volts]. The value written is 2300 (230.0V AC).
MsgBlockTransferWrite (Request Data) to Write to Drive Parameter 41 (Hex)
MsgBlockTransferRead (Response Data) to Write to Drive Parameter 41 (Hex)
See Formatting Block Transfer Messages on page 5-2 for more information
on block transfer messages.
Int Address Value (hex) Description See Page
Offset 0 000A Length of Message = 10 bytes (A hex) 5-3
Offset 1 0081 Required Setting 5-3
Offset 2 000E Service = Get_Attribute_Single C-1
Offset 3 0093 Class = 93 DPI Parameter Object C-5
Offset 4 0001 Instance = Parameter 1 (1 hex) C-5
Offset 5 0009 Attribute = 09 DPI Parameter Value C-6
Int Address Value (hex) Description See Page
Offset 0 0004 Length of Message = 4 bytes 5-4
Offset 1 0000
The Message was Successful 5-4
Offset 2 0000
Offset 3 00D5 Response Data = 213 (D5 hex) = 21.3 Hz. n/a
Int Address Value (hex) Description See Page
Offset 0 000C Length of Message = 12 bytes (C hex) 5-3
Offset 1 0081 Required Setting 5-3
Offset 2 0010 Service = Set_Attribute_Single C-1
Offset 3 0093 Class = 93 DPI Parameter Object C-5
Offset 4 0029 Instance = Parameter 41 (29 hex) C-5
Offset 5 0009 Attribute = 09 DPI Parameter Value C-6
Offset 6 08FC Data = 2300 (8FC hex) = 230.0V AC n/a
Int Address Value (hex) Description See Page
Offset 0 0002 Length of Message = 2 bytes 5-4
Offset 1 0000
The Message was Successful 5-4
Offset 2 0000
- User Manual 1
- Important User Information 2
- Summary of Changes 3
- Table of Contents 5
- About This Manual 7
- Rockwell Automation 8
- Additional Resources 8
- Resource Description 9
- About This Manual P-3 9
- P-4 About This Manual 10
- Getting Started 11
- Features 12
- Compatible Products 13
- Required Equipment 13
- User-Supplied Equipment 14
- Safety Precautions 15
- Quick Start 16
- Installing the Adapter 17
- Commissioning the Adapter 18
- Connecting the Adapter to 20
- Applying Power 24
- 2-10 Installing the Adapter 26
- Configuring the Adapter 27
- Using the PowerFlex 7-Class 28
- HIM to Access Parameters 28
- Setting the Rack Address 29
- Setting the Baud Rate 30
- Setting the Starting Module 30
- Setting the Last Rack 31
- Setting the Rack Size 31
- Setting the I/O 32
- Configuration 32
- Setting a Fault Action 33
- Resetting the Adapter 34
- Viewing the Adapter Status 35
- Using Parameters 35
- Updating the Adapter 36
- Firmware 36
- Chapter 4 37
- Understanding the I/O Image 38
- Discrete I/O Image 40
- Size Valid Values 41
- 16-bit -32768 to 32767 41
- Block Transfer I/O Image 43
- Rules for Using Datalinks 44
- Datalink Scaling 45
- Example Ladder Logic 47
- Program Information 47
- ControlLogix Controller 48
- PLC-5 Controller Example 51
- Block Transfer Read 53
- Block Transfer Write 54
- All Controller Versions 55
- Chapter 5 59
- About Block Transfer 60
- Messaging 60
- Formatting Block Transfer 60
- Messages 60
- Executing Block Transfers 63
- Example Programs 64
- Ladder Logic Program 66
- SLC 500 Controller 69
- Examples 69
- Troubleshooting 75
- PORT Status Indicator 76
- MOD Status Indicator 76
- NET A Status Indicator 77
- Viewing Adapter Diagnostic 77
- Viewing and Clearing 79
- Table 6.B Adapter Events 80
- Specifications 81
- Regulatory Compliance 82
- Adapter Parameters 83
- CIP Objects 87
- Common Messages 88
- DPI Device Object 89
- DPI Parameter Object 91
- Descriptor Attributes 93
- Formulas for Converting 94
- Object-Specific Services 94
- DPI error code 95
- DPI Fault Object 101
- Instance Attributes 102
- DPI Alarm Object 103
- DPI Time Object 105
- C-20 CIP Objects 106
- Logic Command/Status Words 107
- Logic Status Word 108
- PowerFlex 700S (Phase II 109
- Control) and 700L (with 109
- 700S Control) Drives 109
- PowerFlex 750-Series Drives 111
- PowerFlex Digital DC Drives 113
- Glossary 115
- D Datalinks 116
- F Fault Action 117
- I Idle Action 118
- L Last RIO Rack 118
- N NVS (Nonvolatile Storage) 118
- R Rack Address 119
- S Scanner 120
- U Update 120
- Z Zero Data 120
- Rockwell Automation Support 128
- Documentation Feedback 128
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