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MELSEC
1 OVERVIEW
(8) Standby master function
This function enables the data link to continue working by switching to a standby
master station (backup station for the master station) if a malfunction occurs in
the master station.
POINT
The personal computer can be set as a standby master station only when the master
station is also a personal computer. If the master station is a programmable controller
CPU, the personal computer cannot be set as a standby master station.
Data link control
by the master station
Master station
Remote I/O station
Station number 2
Number of occupied stations: 1
Remote I/O station
Station number 3
Number of occupied stations: 1
Standby master station
Station number 1
Number of occupied stations: 1
Data link control
in progress
Standby
Cyclic communication
Cyclic communication
Cyclic communication
Master station is down Data link control by the standby master station
Master station
Remote I/O station
Station number 2
Number of occupied stations: 1
Remote I/O station
Station number 3
Number of occupied stations: 1
Standby master station
Station number: 1 0
*1
Control in
Progress
Cyclic communication
Cyclic communication
Cyclic communication
*1: When the master station is down and the data link control is switched to the standby master station, the station number of the
standby master station will be 0.
(9) Mode selection according to the system
The CC-Link system has 3 types of modes applicable to various systems. Select
one of the modes on <<Parameter settings>> in the CC-Link Ver.2 utility.
Refer to Appendix 12 for the mode selection.
Each of the modes is described below.
Mode Description
Connectable
station
Remote net Ver.1 mode
The compatibility mode with the CC-Link Ver.1 board.
Select this mode when the cyclic points increasing is not
required or when the CC-Link Ver.2 board is used as
substitute for the CC-Link Ver.1 board.
Remote I/O station
Remote device station
Intelligent device station
Local station
Standby master station
Remote net Ver.2 mode
Select this mode when configuring a new system with the
cyclic points increasing.
Remote net additional mode
Select this mode when adding a Ver.2 compatible slave
station to the existing system to increase the number of
cyclic points.
Содержание Q80BD-J61BT11N
Страница 2: ......
Страница 34: ...1 10 1 10 MELSEC 1 OVERVIEW MEMO ...
Страница 54: ...3 12 3 12 MELSEC 3 SPECIFICATIONS MEMO ...
Страница 124: ...5 16 5 16 MELSEC 5 PROCEDURE BEFORE STARTING THE DATA LINK MEMO ...
Страница 160: ...9 2 9 2 MELSEC 9 MELSEC DATA LINK LIBRARY MEMO 9 ...
Страница 200: ...12 16 12 16 MELSEC 12 COMMUNICATION BETWEEN THE MASTER STATION AND LOCAL STATIONS MEMO ...
Страница 212: ...13 12 13 12 MELSEC 13 COMMUNICATION BETWEEN THE MASTER STATION AND INTELLIGENT DEVICE STATION AJ65BT R2 MEMO ...
Страница 228: ...14 16 14 16 MELSEC 14 COMMUNICATION BETWEEN THE MASTER STATION AND INTELLIGENT DEVICE STATION AJ65BT D75P2 S3 MEMO ...
Страница 354: ...App 92 App 92 MELSEC APPENDIX Appendix 19 2 Q81BD J61BT11 121 141 147 153 19 158 103 5 91 Unit mm ...
Страница 355: ...App 93 App 93 MELSEC APPENDIX MEMO ...
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