6.1.14 Start/Stop Conditions
6-8
7 RS-485 Installation and Set-up
7-1
7.1 RS-485 Installation and Set-up
7-1
7.1.4 EMC Precautions
7-2
7.2 Adjustable Frequency Protocol Overview
7-3
7.3 Network Configuration
7-4
7.4 FC Protocol Message Framing Structure
7-4
7.4.1 Content of a Character (byte)
7-4
7.4.2 Message Structure
7-4
7.4.3 Message Length (LGE)
7-5
7.4.4 Adjustable Frequency Drive Address (ADR)
7-5
7.4.5 Data Control Byte (BCC)
7-5
7.4.6 The Data Field
7-5
7.4.7 The PKE Field
7-6
7.4.9 Index (IND)
7-7
7.4.10 Parameter Value (PWE)
7-8
7.4.12 Conversion
7-9
7.4.13 Process Words (PCD)
7-9
7.5 Examples
7-9
7.5.1 Writing a Parameter Value
7-9
7.5.2 Reading a Parameter Value
7-10
7.6 Modbus RTU Overview
7-10
7.6.1 Assumptions
7-10
7.6.2 What the User Should Already Know
7-10
7.6.3 Modbus RTU Overview
7-10
7.6.4 Adjustable Frequency Drive with Modbus RTU
7-11
7.7.1 Adjustable Frequency Drive with Modbus RTU
7-11
7.8 Modbus RTU Message Framing Structure
7-11
7.8.1 Adjustable Frequency Drive with Modbus RTU
7-11
7.8.2 Modbus RTU Message Structure
7-12
7.8.3 Start/Stop Field
7-12
7.8.4 Address Field
7-12
7.8.5 Function Field
7-12
7.8.6 Data Field
7-12
7.8.7 CRC Check Field
7-12
7.8.8 Coil Register Addressing
7-13
7.8.9 How to Control the Adjustable Frequency Drive
7-15
7.8.10 Function Codes Supported by Modbus RTU
7-15
Contents
VLT
®
HVAC Drive Design Guide
MG11BB22 - VLT
®
is a registered Danfoss trademark
Содержание VLT HVAC Drive FC 100 Series
Страница 10: ...How to Read this Design Gui VLT HVAC Drive Design Guide 1 6 MG11BB22 VLT is a registered Danfoss trademark 1 1...
Страница 56: ...Introduction to VLT HVAC D VLT HVAC Drive Design Guide 2 46 MG11BB22 VLT is a registered Danfoss trademark 2 2...
Страница 126: ...How to Install VLT HVAC Drive Design Guide 5 38 MG11BB22 VLT is a registered Danfoss trademark 5 5...
Страница 136: ...Application Examples VLT HVAC Drive Design Guide 6 10 MG11BB22 VLT is a registered Danfoss trademark 6 6...
Страница 160: ...RS 485 Installation and Set VLT HVAC Drive Design Guide 7 24 MG11BB22 VLT is a registered Danfoss trademark 7 7...