
3 DM Link Communication
3-4
WindO/I-NV4 User’s Manual
3.1 Overview
DM Link Communication reads and writes value to external devices using the MICRO/I's dedicated DM Link memory.
The device type of dedicated DM Link memory is DM.
This method uses a dedicated IDEC protocol, so a communication program is required in the external device.
●
Communication Methods
Over the serial interface, when one external device is communicating with one MICRO/I using this communication
method it is called DM Link 1:1 communication, and when one external device is communicating with multiple MICRO/I
units, it is called DM Link 1:N communication. When external devices and the MICRO/I are communicating using DM
Link communication over the Ethernet interface (UDP protocol), it is called DM Link Ethernet (UDP) communication
.
■
DM Link 1:1 Communication
The external device is connected to a single MICRO/I by using a serial interface.
The Event Transmission function from the MICRO/I can be used with DM Link 1:1 Communication.
The Event Transmission function is a function that works as follows. When value in the dedicated DM Link memory of
the MICRO/I is changed, the data is transmitted from the MICRO/I to the external device.
*1 HG5G/4G/3G/2G-V, HG4G/3G, HG2G-5F only
3
DM Link Communication
HG3G
HG2G-5F
HG5G-V HG4G-V
HG3G-V
HG2G-V
HG2G-5T
HG4G
HG1G HG1P
MICRO/I
999
5678
External device
DM Link Communication
Read
Write
DM0:
999
DM1:
1234
5678
DM0
DM1
DM2
DM8190
DM8191
Dedicated DM Link memory
Numerical Display
Destination Device Address: DM0
Numerical Display
Reference Device Address: DM1
For details regarding the DM Link Communication, refer to Chapter 4 "DM Link Communication" in the
WindO/I-NV4 External Device Setup Manual.
HG3G
HG2G-5F
HG5G-V HG4G-V
HG3G-V
HG2G-V
HG2G-5T
HG4G
HG1G HG1P
MICRO/I
Dedicated DM
Link memory
External device
DM Link 1:1 Communication
Read
Write
MICRO/I
Event transmission
Dedicated DM
Link memory
External device
DM0:
0
DM1:
0
DM2:
0
100
150
200
DM0:
100
DM1:
150
DM2:
200
DM Link 1:1 Communication
Содержание MICRO/I HG4G-CJT22 F-B Series
Страница 1: ...B 1701 11 User s Manual ...
Страница 26: ...Preface 25 WindO I NV4 User s Manual ...
Страница 50: ...1 WindO I NV4 Specifications 2 18 WindO I NV4 User s Manual Baltic Font ANSI 1257 Cyrillic Font ANSI 1251 ...
Страница 106: ...5 WindO I NV4 Common Operations and Settings 2 74 WindO I NV4 User s Manual ...
Страница 254: ...7 BACnet Communication 3 148 WindO I NV4 User s Manual ...
Страница 362: ...5 Screen Restrictions 5 28 WindO I NV4 User s Manual ...
Страница 402: ...3 Text 7 30 WindO I NV4 User s Manual ...
Страница 574: ...9 Potentiometer 8 172 WindO I NV4 User s Manual ...
Страница 1052: ...4 Using the Data 15 22 WindO I NV4 User s Manual ...
Страница 1170: ...6 Important Notes 20 60 WindO I NV4 User s Manual ...
Страница 1200: ...5 Restrictions 22 18 WindO I NV4 User s Manual ...
Страница 1260: ...5 Editing User Accounts on the MICRO I 23 60 WindO I NV4 User s Manual ...
Страница 1286: ...4 Clear 24 26 WindO I NV4 User s Manual 4 Click Yes 5 Click Close This concludes clearing data ...
Страница 1288: ...4 Clear 24 28 WindO I NV4 User s Manual 6 Click Yes 7 Click Close This concludes clearing data on the external memory device ...
Страница 1322: ...2 Monitoring on the MICRO I 25 28 WindO I NV4 User s Manual ...
Страница 1414: ...4 E mail Function 28 66 WindO I NV4 User s Manual ...
Страница 1554: ...3 Settings 34 14 WindO I NV4 User s Manual ...
Страница 1642: ...2 Handling Problems 36 6 WindO I NV4 User s Manual ...
Страница 1652: ...5 Text Alignment A 10 WindO I NV4 User s Manual ...
Страница 1664: ...Index 12 WindO I NV4 User s Manual ...