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DIII EKMBDXB7V1
Daikin DIII EKMBDXB7V1 User Manual
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Design guide
Modbus Interface DIII
EKMBDXB7V1
2
Table of Contents
Table of Contents
2
Safety Precautions
4
Introduction
4
System Layout
4
Limitations
5
Specifications
5
Dimensions and Field Wiring
6
Wiring Diagram
7
LED Meaning
7
Termination Resistance (SS Switches)
7
Push Buttons
8
Dipswitch Meaning
8
Overview of Compatible Daikin Units Ranges with DIII Connection
9
Overview of Compatibilty with Other DIII Centralised Control Equipment
9
Modbus Communication
11
Modbus Interface DIII Settings
11
Communication Format
12
Function Format
12
Character Format
15
Silent Internal Time
15
Response Time
15
Communication Procedure
16
System Initialisation
16
Monitor and Operate Units from the BMS
17
Other DIII Devices Exist in the same System
21
Modbus Registers
22
Input Registers
22
Holding Registers
33
Software of Modbus Interface DIII
41
Software Releases
41
Software Update with Updater
41
Updater
41
Method 1) Update with the PC USB Cable EKPCCAB
42
Method 2) Update with a USB/RS485 Converter
44
Modbus Interface DIII Test Operation
46
Introduction
46
Outline of System
46
Test Operation Procedure
47
Prepare Register Groups
47
Start Reading Registers Groups
50
Set a Holding Register
51
Troubleshooting
52
Revision of the Document
53
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Daikin DIII EKMBDXB7V1 Specifications
General
Brand
Daikin
Model
DIII EKMBDXB7V1
Category
Air Conditioner Accessories
Language
English
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