Quest Controls BACnet T-Stat Manuel de service Page 228
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Noté. / 5. Basé sur avis des utilisateurs
228 • Fieldbus Communication
MODBUS Functions
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
4.3.3.11 Function Code FC23 (Read/Write multiple registers)
This function performs a combination of a read and write operation in a single
request. The function can write the new data to a group registers, and then re-
turn the data of a different group.
Request
The reference numbers (addresses) are zero-based in the request message;
therefore, the first register is at address 0.
The request message specifies the registers to read and write. The data is sent
as 2 bytes per register. Example: The data in register 3 is set to value 0x0123,
and values 0x0004 and 0x5678 are read out of the two registers 0 and 1.
Byte Field name Example
Byte 0, 1 Transaction identifier 0x0000
Byte 2, 3 protocol identifier 0x0000
Byte 4, 5 length field 0x000F
Byte 6 Unit identifier 0x01 not used
Byte 7 MODBUS function code 0x17
Byte 8-9 reference number for read 0x0000
Byte 10-11 Word count for read (1-125) 0x0002
Byte 12-13 reference number for write 0x0003
Byte 14-15 Word count for write (1-100) 0x0001
Byte 16 Byte Count (B = 2 x word count for write) 0x02
Byte 17-(B+16) Register Values 0x0123
Response
Byte Field name Example
....
Byte 7 MODBUS function code 0x17
Byte 8 Byte Count (B = 2 x word count for read) 0x04
Byte 9-(B+1) Register Values 0x0004, 0x5678
Exception
Byte Field name Example
.....
Byte 7 MODBUS function code 0x97
Byte 8 Exception code 0x01 or 0x02
Attention
If register areas for read and write overlap, the results are undefined.
- Modular I/O System 1
- BACnet/IP Controller 1
- 750-830 1
- 2 • General 2
- Content 3
- 4 • Content 4
- Content • 5 5
- 1 Important Notes 6
- Important Notes • 7 7
- Legal Principles 7
- 8 • Important Notes 8
- 1.3 Symbols 9
- 1.4 Safety Information 10
- 1.5 Font Conventions 11
- 1.6 Number Notation 11
- 1.7 Scope 12
- 1.8 Abbreviation 12
- 2 The WAGO-I/O-SYSTEM 750 13
- 2.2 Technical Data 14
- Side view 19
- Dimensions in mm 19
- 2.3 Manufacturing Number 20
- 2.4 Component Update 21
- 2.6 Mechanical Setup 22
- Mechanical Setup • 23 23
- 2.6.4 Spacing 24
- 2.6.6 Assembly Sequence 26
- Mechanical Setup • 27 27
- 2.6.8 Power Contacts 28
- 2.6.9 Wire Connection 29
- 2.7 Power Supply 30
- 2.7.2 System Supply 31
- 2.7.3 Field Supply 34
- 2.7.5 Supply Example 39
- 2.7.6 Power Supply Unit 40
- 2.8 Grounding 41
- 2.8.2 Grounding Function 42
- 2.8.3 Grounding Protection 43
- 2.9 Shielding (Screening) 44
- 3 Fieldbus Controller 46
- 3.1.2 Compatibility 47
- 3.1.3 Hardware 48
- Hardware 49
- g083002x 51
- Configuration and 52
- Mode switch 53
- Hardware 54
- 3.1.4 Operating System 55
- Operating System 56
- 3.1.5 Process Image 57
- Process Image 58
- Process Image 59
- 3.1.6 Data Exchange 62
- I/O modules 63
- Data Exchange 64
- Data Exchange 65
- MODBUS master 72
- 3.1.6.5.2.1 Word Access 75
- 3.1.6.5.2.2 Bit Access 76
- Fieldbus Node Start-up 78
- Fieldbus Node Start-up 81
- P012913x 95
- WAGO-I/O-SYSTEM 750 100
- WAGO-I/O-SYSTEM 750 103
- MODBUS IP 116
- 3.1.9 LED Signaling 124
- ‘I/O’ LED 126
- 1st flash sequence 126
- Coupler/Controller starts up 126
- Error code 2 -not used 129
- Error code 7 -not used 132
- Error code 8 -not used 132
- Error code 9 - not used 132
- 3.1.10 Fault behavior 135
- Fault behavior 136
- 3.1.11 Technical Data 137
- 4 Fieldbus Communication 163
- 1Netwerkknotene 164
- ETHERNET 167
- ETHERNET 168
- 4.1.3 Network Communication 174
- ETHERNET/IP 175
- 4.2 BACnet/IP 192
- BACnet/IP 193
- Tab. 4-36: BACnet objects 193
- BACnet/IP 194
- DS-RP- A 204
- IA Service User 204
- BACnet device 212
- 4.3 MODBUS Functions 214
- MODBUS Functions 216
- 4.3.5 Internal Variables 231
- 5 I/O Modules 245
- 5.1.3 Analog Input Modules 248
- 5.1.4 Analog Output Modules 250
- 5.1.5 Special Modules 251
- 5.1.6 System Modules 253
- 5.2.1 Digital Input Modules 254
- 5.2.3 Analog Input Modules 260
- 5.2.4 Analog Output Modules 261
- 5.2.5 Specialty Modules 262
- High Byte Low Byte 263
- 5.2.6 System Modules 274
- 6.1 Acked_Transitions 276
- 6.2 Active_COV_Subscriptions 277
- 6.3 Active_Text 277
- 6.4 Alarm_Value 278
- 6.5 APDU_Segment_Timeout 279
- 6.6 APDU_Timeout 279
- 6.8 Archive 280
- 6.9 Backup_Failure_Timeout 280
- 6.10 Change_Of_State_Count 281
- 6.11 Change_Of_State_Time 281
- 6.12 Configuration_Files 282
- 6.13 COV_Increment 282
- 6.14 Database_Revision 282
- 6.15 Data_List 283
- 6.16 Daylight_Savings_Status 283
- 6.17 Deadband 283
- 6.18 Description 284
- 6.19 Device_Address_Binding 284
- 6.20 Device_Type 285
- 6.21 Effective_Period 285
- 6.22 Elapsed_Active_Time 285
- 6.23 Event_Enable 286
- 6.24 Event_State 286
- 6.25 Event_Time_Stamps 286
- 6.26 Exception_Schedule 287
- 6.27 Feedback_Value 288
- 6.28 File_Access_Method 288
- 6.29 File_Size 289
- 6.30 File_Type 289
- 6.31 Firmware_Revision 289
- 6.32 High_Limit 289
- 6.33 Inactive_Text 290
- 6.34 Last_Restore_Time 290
- 6.35 Limit_Enable 291
- 6.39 Location 292
- 6.40 Low_Limit 292
- 6.37 Local_Date 292
- 6.38 Local_Time 292
- 6.42 Max_Pres_Value 293
- 6.43 Max_Segments_Accepted 293
- 6.44 Min_Pres_Value 293
- 6.45 Minimum_Off_Time 294
- 6.46 Minimum_On_Time 294
- 6.47 Model_Name 294
- 6.48 Modification_Date 295
- 6.49 Notification_Class 295
- 6.50 Notify_Type 295
- 6.51 Number_Of_APDU_Retries 295
- 6.52 Object_Identifier 296
- 6.53 Object_List 296
- 6.54 Object_Name 296
- 6.55 Object_Type 297
- 6.56 Out_Of_Service 297
- 6.57 Polarity 298
- 6.58 Present_Value 299
- Present_Value 301
- 6.59 Priority_Array 302
- 6.60 Priority_For_Writing 302
- 6.62 Protocol_Revision 303
- 6.64 Protocol_Version 303
- 6.65 Read_Only 304
- 6.66 Record_Count 304
- 6.67 Reliability 304
- 6.68 Relinquish_Default 305
- 6.69 Resolution 306
- 6.70 Schedule_Default 306
- 6.71 Segmentation_Supported 306
- 6.72 Status_Flags 307
- 6.73 System_Status 308
- 6.74 Time_Delay 308
- 6.77 Units 309
- 6.78 Update_Interval 310
- 6.79 UTC_Offset 310
- 6.80 Vendor_Identifier 310
- 6.81 Vendor_Name 311
- 6.82 Weekly_Schedule 311
- 7.1 PICS Content 312
- 8 Application Examples 313
- 314 • Application Examples 314
- G012913e 315
- 9.1 Foreword 316
- 9.2 Protective Measures 316
- 9.3.2 Device Group 318
- 9.3.3 Unit Categories 319
- 9.3.4 Temperature Classes 320
- 9.4.1 Divisions 323
- 9.4.3 Temperature Classes 324
- 9.5 Identification 325
- 9.5.2 For America 326
- 9.6 Installation Regulations 327
- 9.6.1 ANSI/ISA 12.12.01 328
- Installation Regulations 329
- 9.6.3 ATEX and IEC Ex 330
- Glossary 331
- 332 • Glossary 332
- Glossary • 333 333
- 334 • Glossary 334
- Glossary • 335 335
- 336 • Glossary 336
- Glossary • 337 337
- 338 • Glossary 338
- Glossary • 339 339
- 340 • Glossary 340
- Glossary • 341 341
- 342 • Glossary 342
- Glossary • 343 343
- 344 • Glossary 344
- Glossary • 345 345
- 346 • Glossary 346
- Glossary • 347 347
- 348 • Glossary 348
- Glossary • 349 349
- 350 • Glossary 350
- Glossary • 351 351
- 352 • Glossary 352
- Glossary • 353 353
- 354 • Glossary 354
- Literature List 355
- 356 • Index 356
- Functions · 228, 236 356
- Index • 357 357
- 358 • Index 358
- Index • 359 359
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