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DeviceNet Connections Appendix B
The following diagram shows the transmission timing. After the COS send instruction has been sent to the
DeviceNet (at the I/O refresh timing for the CPU Unit), the COS transmission is executed to each slave immedi-
ately after the refresh (remote I/O communications), which each slave is performed during the communications
cycle. Therefore, when there are a lot of destination slaves, the COS send timing may be delayed in order of
the node addresses.
DeviceNet Unit
Multiple COS send switches (node address #1, #2, #3) turned OFF to ON
I/O refresh
Time
COS send instruction
Node #1 Node #2 Node #3 Node #4 Node #1
COS
#1
Node #2
COS
#2
Node #3
COS
#3
Node #4
Communications cycle time Communications cycle time
Slave # 1
Slave # 2
Slave # 3
: I/O using normal connection
: Output using COS (sent to fit in between
normal cycles)
CPU Unit user
program
- Operation Manual 1
- OMRON Product References 3
- Visual Aids 3
- Trademarks and Copyrights 4
- TABLE OF CONTENTS 5
- About this Manual: 7
- PRECAUTIONS 9
- 1 Intended Audience 10
- 2 General Precautions 10
- 3 Safety Precautions 10
- 5 Application Precautions 12
- Application Precautions 5 13
- 6-1 Applicable Directives 14
- 6-2 Concepts 14
- SECTION 1 16
- 1-1 Overview of DeviceNet 17
- Input Remote 18
- Adapter (used 18
- Remote I/O Master 21
- Communications Instructions 23
- 1-1-3 Masters 24
- 1-1-4 Types of Slave 24
- Manual (W347) 26
- MULTIPLE I/O TERMINAL Units 28
- 1-2 DeviceNet Unit Features 30
- CX-Programmer 33
- 1-3 Specifications 36
- Specifications Section 1-3 37
- CS/CJ-series PC 44
- 1-5-1 Models 48
- 1-6-3 Creating Routing Tables 52
- Using the Master Function 53
- Using Slave Function 54
- SECTION 2 59
- Nomenclature and Installation 59
- 1. Status indicators 61
- 3. Dot indicators 61
- 2-1-3 Seven-Segment Display 62
- CS1W-DRM21 CJ1W-DRM21 63
- 2-2-2 Mounting 66
- 2-2-3 Handling Precautions 67
- 2-2-4 External Dimensions 69
- SECTION 3 70
- Allocated CIO and DM Words 70
- 3-1-2 Allocated DM Area Words 72
- 3-2 Allocated CIO Area Words 73
- • Master Status 1 (word n+12) 74
- Master I/O Allocation Status 88
- 3-3 Allocated DM Area Words 94
- Areas and Word Ranges 96
- Setting Results 99
- 3-3-8 Slave Detailed Status 102
- SECTION 4 104
- 4-1-1 Allocations 105
- Fixed Allocations 106
- User-set Allocations 106
- 4-2 Scan List 112
- Scan List Section 4-2 113
- 4-3 Fixed Allocations 114
- 4-3-2 Procedure 115
- Fixed Allocations Section 4-3 116
- Allocation disabled 119
- 4-4 User-set Allocations 120
- Area for Allocation 122
- Size Setup Table 122
- Node ad 127
- Communications 129
- I/O Data Communications 130
- Flag (word n+12, bit 15) 130
- Unit Error Flag 130
- (word n+10, bit 00) 130
- Slave I/O processing 130
- SECTION 5 133
- 5-1-1 Allocation Methods 134
- 5-2 Fixed Allocations 137
- 5-3 User-set Allocations 138
- 5-3-1 Connection Types 139
- 5-3-2 Procedure 139
- 5-3-3 Connection Types 142
- SECTION 6 144
- Message Communications 144
- 6-1 Overview 145
- Overview Section 6-1 146
- 6-2-1 FINS Communications 152
- 6-2-4 FINS Command Lists 154
- 6-3-1 Setting Node Addresses 156
- 6-3-2 Creating Routing Tables 156
- Routing Tables 157
- NETWORK SEND: SEND(090) 159
- NETWORK RECEIVE: RECV(098) 160
- 6-3-4 Sending FINS Commands 161
- 7 6 5 4 3 2 1 0 163
- Programming Examples 165
- Program Example 166
- 6-4 Sending Explicit Messages 169
- PC's 170
- CPU Unit 170
- Response 172
- Command 172
- word specified for the 173
- CMND(490) 174
- Explicit message 177
- 66 CPU Unit model 22 bytes 179
- No. of bytes received 181
- Destination node address 181
- Service Code 181
- Command Block 182
- No. of bytes 190
- Destination 190
- SECTION 7 191
- Other Functions 191
- DeviceNet 192
- Ethernet 192
- 7-1-1 Setting Node Addresses 193
- 7-2-1 Outline of Functions 197
- 7-2-2 File Names 198
- SECTION 8 199
- Communications Timing 199
- Communications Cycle Time 200
- Communications Time/Slave 201
- 8-1-2 I/O Response Time 202
- Minimum I/O Response Time 204
- 8-1-4 System Startup Time 205
- 8-2 Message Communications 206
- PC's cycle time x 2 207
- SECTION 9 209
- Master Errors 212
- Network Errors 218
- F0 --- Red (lit) 0211 219
- Memory Access Errors 220
- E7 Red (flashing) --- 021A 221
- E8 Red (flashing) --- 021A 221
- E9 Red (flashing) --- 0602 222
- CPU Unit Exchange Errors 223
- HC Red (flashing) --- 021A 225
- Hd Red (flashing) --- 0347 225
- HF Red (flashing) --- 0001 226
- HE Red (flashing) --- 0002 226
- Slave Errors 227
- 9-2 Error Log Functions 228
- 9-3 Troubleshooting 232
- 9-3-3 I/O Link Problems 233
- 9-3-5 Scan List Problems 234
- 9-4-1 Cleaning 235
- 9-4-2 Inspection 235
- 9-4-3 Replacing Faulty Units 236
- Appendix A 238
- Status Areas 239
- Master Status Area 2 241
- Registered Slave Table 241
- Normal Slave Table 242
- Appendix B 244
- Connections Using Allocations 245
- Setting Connection Type 245
- Connection Path 246
- Master COS Send Switch 247
- Appendix C 249
- READ CONTROLLER STATUS (0601) 250
- ECHOBACK TEST (0801) 251
- READ ERROR HISTORY (2102) 252
- ERROR HISTORY CLEAR (2103) 253
- End Codes 254
- Important Point 254
- Appendix D 255
- Outline of Functions 256
- File Names 257
- Appendix E 258
- Master Unit Device Profile 259
- DeviceNet Object (03 Hex) 260
- Connection Object (05 Hex) 260
- PC Object (2F Hex) 265
- Appendix F 268
- Parameter Details 269
- Explanation 269
- Revision History 274
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