Rockwell-automation 1761-NET-DNI DeviceNet Interface (DNI) Manual de usuario Pagina 75
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Publication 1761-UM005B-EN-P - October 2006
Application Examples 75
DNI I-O.RSS Ladder 6 - COS ML DNI
0000
NEQ
Not Equal
Source A I:0.0
341<
Source B N7:89
341<
NEQ
Not Equal
Source A I:0.1
0<
Source B N7:80
0<
B3:31
11
0001
N7:82
13
B3:31
11
T4:38
DN
N7:82
8
0002
EN
DN
ER
Read/Write Message
Read/Write Write
Target Device 485CIF
Control Block N7:82
Control Block Length 7
Setup Screen
MSG
This rung checks to see if the input data has changed from the previous ladder scan. If the input data has changed, bit
B3:31 is set.
MicroLogix 1000 Inputs Input Data has Changed Flag
The Time Out bit (TO) associated with each message instruction is used to clear the controller’s communications buffer and
message instruction. Setting the TO bit places the controller’s communication section in the same condition as when the
controller powers up. This rung detects if a message instruction is currently being processed and, when input data
changes, the existing message is terminated allowing a new transmission to start. It also terminates the message if the
message instruction does not complete (T4:38/DN).
MicroLogix to DNI Message Input Data has Changed Flag MicroLogix to DNI Message Timeout
Retry Message
This is the message instruction that writes data to the DNI. It is recommended that you use 485CIF as the target device. CIF
is the most efficient type of communications. This message instruction also has a destination address of 254. This value is
entered into the Setup Screen area of the message instruction.
- DeviceNet 1
- Interface 1
- Important User Information 2
- Summary of Changes 3
- 4 Summary of Changes 4
- Table of Contents 5
- Table of Contents 6 6
- About This Publication 7
- Who Should Use This 7
- Publication 7
- Conventions 7
- Additional Resources 8
- Overview 9
- 10 Overview 10
- Quick Start 11
- IMPORTANT 12
- Configuring Master/Slave 13
- 0…254 0 90 14
- 0…254 1 95 14
- 16 Quick Start 16
- Operation 17
- Network Configuration 18
- Software 18
- Messaging Services 19
- Messaging Overview 20
- Programming Over the 21
- DeviceNet Network 21
- Remote Access to DeviceNet 22
- Installation and Wiring 23
- Safety Considerations 24
- Mounting 24
- Panel Mounting 25
- Network Port Wiring 26
- Cable Selection Guide 26
- Programming Notes 27
- EDS Parameters for the DNI 28
- Input Size 29
- Input Split Point 30
- Organization of Input Data 31
- Input Split Point Example 31
- Input Type 33
- Input Data File 33
- Input Word Offset 34
- Output Size 35
- Output Split Point 36
- Organization of Output Data 37
- Output Split Point Example 37
- Output Type 38
- Output Data File 39
- Output Word Offset 39
- Device Type 41
- I/O Scan Enable 41
- DF1 Heartbeat 43
- DF1 (RS-232) Port A DEF A 44
- DNI’s Read Sequence 44
- DNI’s Write Sequence 44
- Data Scan Delay 45
- Message Timeout 46
- DF1 Substitute Address 47
- DF1 Autobaud 47
- DF1 Baud Rate 48
- DeviceNet Autobaud 48
- Status Byte 50
- Input Status to Master Device 50
- Output Status to DF1 Device 51
- DNI Software Files 53
- File Descriptions 54
- Obtaining the Files 54
- Setting Up Network 55
- Configuration Software 55
- – Communications Adapter 56
- Setting Up DeviceNet Manager 57
- Commissioning the DNI 58
- Modifying DNI Parameters 60
- Troubleshooting 63
- Fault Conditions 64
- DNI Series A 65
- DeviceNet Class Codes 65
- DNI Series B 66
- Class Code: 0x04 67
- Application Examples 69
- Example DNI Configuration 70
- Parameters 70
- Example Ladder Logic 71
- Using DF1 Protocol for 78
- Explicit Messages Over a 78
- Routing Profile 79
- Configuration 79
- Explicit Messaging 80
- Examples 80
- Writing (Set) Data Example 82
- Specifications 85
- Dimensions 86
- 88 Specifications 88
- Glossary 89
- Interface Basics 89
- Terms and Abbreviations 89
- 90 Glossary 90
- Peer-To-peer 91
- Profile Register 91
- 92 Glossary 92
- 94 Index 94
- Index 95 95
- 96 Index 96
- Index 97 97
- 98 Index 98
- Rockwell Automation 100
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