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Bus adress
Bus register
1
PLC Register Content Access Description
0 1 40001 Reserved Reserved for Legacy Drives VLT 5000 and VLT 2800
1 2 40002 Reserved Reserved for Legacy Drives VLT 5000 and VLT 2800
2 3 40003 Reserved Reserved for Legacy Drives VLT 5000 and VLT 2800
3 4 40004 Free
4 5 40005 Free
5 6 40006 Modbus conf Read/Write TCP only. Reserved for Modbus TCP (p12-28 and 12-29 -
store in Eeprom etc.)
6 7 40007 Last error code Read only Error code recieved from parameter database, refer to
WHAT 38295 for details
7 8 40008 Last error register Read only Address of register with which last error occurred, refer
to WHAT 38296 for details
8 9 40009 Index pointer Read/Write Sub index of parameter to be accessed. Refer to WHAT
38297 for details
9 10 40010 FC par. 0-01 Dependent on
parameter access
Parameter 0-01 (Modbus Register=10 parameter number
20 bytes space reserved pr parameter in Modbus Map
19 20 40020 FC par. 0-02 Dependent on
parameter access
Parameter 0-02
20 bytes space reserved pr parameter in Modbus Map
29 30 40030 FC par. xx-xx Dependent on
parameter access
Parameter 0-03
20 bytes space reserved pr parameter in Modbus Map
Table 7.17 Adress/Registers
1)
Value written in Modbus RTU telegram must be one or less than register number. E.g. Read Modbus Register 1 by writing value 0 in telegram.
7.8.9
How to Control the Frequency
Converter
This section describes codes which can be used in the
function and data fields of a Modbus RTU message.
7.8.10 Function Codes Supported by
Modbus RTU
Modbus RTU supports use of the following function codes
in the function field of a message.
Function Function Code
Read coils 1 hex
Read holding registers 3 hex
Write single coil 5 hex
Write single register 6 hex
Write multiple coils F hex
Write multiple registers 10 hex
Get comm. event counter B hex
Report follower ID 11 hex
Table 7.18 Function Codes
Function Function
Code
Sub-
function
code
Sub-function
Diagnostics 8 1 Restart communication
2 Return diagnostic register
10 Clear counters and
diagnostic register
11 Return bus message count
12 Return bus communi-
cation error count
13 Return bus exception error
count
14 Return follower message
count
Table 7.19 Function Codes
RS-485 Installation and Set...
VLT
®
HVAC Basic Drive FC 101 Design Guide
90 MG18C502 - Rev. 2013-09-06
77
- Design Guide 1
- HVAC Basic Drive FC 101 1
- Contents 3
- 1 Introduction 3
- 2 Product Overview 3
- 3 Selection 3
- 4 How to Order 4
- 5 How to Install 4
- 6 How to Programme 4
- 1.5 Additional Resources 8
- Definitions 8
- MG18C502 - Rev. 2013-09-06 7 9
- Power Factor 10
- DANGEROUS VOLTAGE 11
- UNINTENDED START 11
- HIGH VOLTAGE 11
- DISCHARGE TIME 12
- MG18C502 - Rev. 2013-09-06 11 13
- Comparison of Energy Savings 15
- Better Control 16
- Required 17
- Product Overview 18
- 2.6.11 Application Examples 19
- 2.6.12 Variable Air Volume 20
- The VLT Solution 20
- 2.6.14 Constant Air Volume 21
- 2.6.16 Cooling Tower Fan 22
- 2.6.18 Condenser Pumps 23
- 2.6.19 The VLT Solution 23
- 2.6.20 Primary Pumps 24
- Frequency 25
- 130BB454.10 26
- 2.7 Control Structures 27
- 2.7.1 Control Principle 27
- 2.7.3 PM/EC+ Motor Control 27
- On) Control 28
- 2.7.6 Feedback Conversion 28
- 2.7.7 Reference Handling 29
- 2.7.10 Manual PI Adjustment 33
- 2.8 General Aspects of EMC 34
- 2.8.1 Emission Requirements 35
- 2.8.2 EMC Test Results 36
- 175HA034.10 37
- = 3 × 120 × 400 × 38
- 2.8.6 Immunity Requirements 39
- <800 Ω >2.9 kΩ 41
- R1.5 +_ 0.5 43
- Illustration 3.5 H1-H5 44
- Illustration 3.6 Dimensions 44
- 42 MG18C502 - Rev. 2013-09-06 44
- Decoupling Plate 45
- 4.1.2 Type Code String 47
- Ordering Numbers 47
- How to Order 48
- 4.2.2 Harmonic Filters 49
- 4.2.3 External RFI Filter 50
- 5.1.2 Shipping Dimensions 53
- 5.1.4 Field Mounting 54
- 5.2 Electrical Data 55
- U 96 / V 97 / W 98 58
- 130BA262.10 59
- RELAY 1 RELAY 2 60
- How to Install 61
- 130BC203.10 62
- 130BA248.10 63
- MG18C502 - Rev. 2013-09-06 65 67
- 130BB622.10 69
- 130BB624.10 69
- 130BC249.10 69
- Illustration 6.3 Wizard 71
- MG18C502 - Rev. 2013-09-06 69 71
- How to Programme 72
- MotorType = Asynchronous 76
- MotorType = PM Motor 76
- 78 MG18C502 - Rev. 2013-09-06 80
- MG18C502 - Rev. 2013-09-06 79 81
- 130BB795.10 82
- 130BA269.10 85
- E19E H 87
- PKE IND PWE 87
- 130BA092.10 87
- Illustration 7.11 Telegram 88
- Illustration 7.12 Response 88
- 86 MG18C502 - Rev. 2013-09-06 88
- 88 MG18C502 - Rev. 2013-09-06 90
- How to Control the Frequency 92
- Converter 92
- Modbus RTU 92
- 96 and length 5 generates 93
- 7.10 Examples 94
- Read Coil Status (01 HEX) 94
- MG18C502 - Rev. 2013-09-06 97 99
- 8.2 General Specifications 108
- 8.4 dU/Dt 112
- *MG18C502* 124
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