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NT-DRT21
Omron NT-DRT21 Manuals
Manuals and User Guides for Omron NT-DRT21. We have
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Omron NT-DRT21 manual available for free PDF download: Operation Manual
Omron NT-DRT21 Operation Manual (135 pages)
DeviceNet CompoBus/D Interface Unit
Brand:
Omron
| Category:
Recording Equipment
| Size: 0 MB
Table of Contents
Table of Contents
4
Precautions
8
General Precautions
9
Intended Audience
9
Safety Precautions
9
Application Precautions
10
Operating Environment Precautions
10
Conformance to EC Directives
14
Applicable Directives
14
Concepts
14
Relay Output Noise Reduction Methods
14
Section 1 Introduction
17
Introduction
17
Features of the Devicenet Interface Unit
18
Devicenet Functions
19
Devicenet Features
19
Communications Functions of Master Units
20
Devicenet (Compobus/D) Communications Specifications
22
System Configuration
23
Master Units
23
Example System Configuration
24
Outline of Configurator
25
Functions of the Devicenet (Compobus/D) Interface Unit
26
Communications Using the Devicenet Interface Unit
26
Contrast with the Regular Memory Link Method
27
Section 2 Operating Procedures
30
Operating Procedures
30
SECTION 2 Operating Procedures
30
Operating Procedures Flowchart
31
PT Settings Procedure
31
Flowchart
32
Preparations Prior to Communications
33
Setting up Communications
33
Simple System Configuration
35
Starting Remote I/O Communications During Operation
35
Section 3 Network Design
36
Network Design
36
SECTION 3 Network Design
36
Network Configuration
37
Network Components
37
Connections
38
Limitations on the Network Configuration
39
Baud Rate and Communications Distance
39
Maximum Network Length
39
Drop Line Lengths
40
Total Drop Line Length
41
Locating Terminating Resistors
41
Sharing the Communications Power Supply
42
Prerequisite Conditions
42
Determining the Communications Power Supply Method
43
Locating the Power Supply
44
Step 1: Determining the Best Location for the Power Supply from a Graph
46
Step 2: Calculating the Best Location of the Actual Nodes
48
Step 3: Splitting the System into Multiple Power Supplies
51
Grounding the Network
52
Dual Power Supply
52
Noise Precautions
53
Ground Wire Connection
53
Correcting Faulty Operation Caused by Noise
55
Sharing the same Power Supply
55
Section 4 Installation and Network Connection
57
Installation and Network Connection
57
Components and Their Functions
58
Mounting the Unit on the PT
59
Connecting to the Devicenet Network
59
Connecting Communications Cables
59
Installing and Removing the Connector
61
Connecting Communications Cables to T-Branch Taps
62
Connecting Terminating Resistors
63
Section 5 Pt Settings and Operations
64
PT Settings and Operations
64
Installing the System Program
65
PT Operations
65
Structure of the System Menu
69
Initializing Devicenet (Compobus/D) Memory Switches
70
Serial Port a Settings
72
Devicenet (Compobus/D) Memory Switch Settings
74
Checking the PT Settings
77
Checking Communications with the PT
79
Checking the System Program Version
80
Section 6 Remote I\/O Communications
82
Remote I/O Communications
82
SECTION 6 Remote I/O Communications
82
Overview of Remote I/O Communications
83
Data Exchange with the Devicenet Interface Unit
83
Settings with the NT-Series Support Tool
85
Setting the PT Model and PC Model
85
Allocating Required Areas and Elements in PT Memory
85
Allocating PT Memory to the Host (Master)
87
Allocation Example
87
Allocating Input and Output Areas to PT Memory
87
Allocating Input and Output Areas to the Master
89
Allocating PT Data to PT Memory
94
Precautions When Allocating Data to PT Memory
94
Section 7 Message Communications
96
Message Communications
96
Overview of Message Communications
97
Exchanging Data with the Devicenet Interface Unit
97
Data Flow of Explicit Messages
97
Using Message Communications
98
EXPLICIT MESSAGE SEND (FINS Command 28 01)
98
Using the CMND Instruction in CVM1 and CV-Series Pcs
100
Using the IOWR Instruction in CS1-Series and C200HX/HG/HE Pcs
104
Explicit Messages
112
Supported Explicit Messages
112
PT Memory Read (H→ L)
112
PT Memory Read (L→ H)
113
PT Memory Write (H→ L)
114
PT Memory Write (L→ H)
115
Sample Program
116
Section 8 Error Processing
119
Error Processing
119
SECTION 8 Error Processing
119
Error Screens Specific to the Devicenet Interface Unit
120
Troubleshooting with the LED Indicators
121
Meaning of the LED Indicators
121
Identifying and Correcting Errors in Slaves
122
A Device Protocol
123
B Comparison of System Program Functions
128
C Standard Models
130
Index
133
Revision History
135
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