Справочник Пользователя для Mitsubishi Electronics A1SJ61QBT11

 
 

 

 

11 - 1 

11   COMMUNICATION BETWEEN THE MASTER STATION AND THE 

LOCAL STATION 

MELSEC-QnA 

 11 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11. COMMUNICATION BETWEEN THE MASTER STATION AND THE 

LOCAL STATION 

 

How to set, program, and confirm the operation of the module is described using a 
system configuration example. 
 

11.1 Secured 32-bit Data 

When the following conditions, 1) and 2) are satisfied in the CC-Link network, 32-bit 
data in remote registers (RWr/RWw) between a programmable controller CPU and a 
master/local station can be secured. 
 
1) Access starts from a remote register (RWr/RWw) address of an "even number". 
 

RWr00
RWr01
RWr02
RWr03

RWw00
RWw01
RWw02
RWw03

D000

CPU device

RWr00
RWr01
RWr02
RWr03

Remote register

Master station

RWw00
RWw01
RWw02
RWw03

Local station

D001
D002
D003

CPU device

Programmable
controller CPU

D001
D002
D003

D000

D004

RWr04

RWw04

Remote register

Programmable
controller CPU

Remote register

Master station

Local station

Remote register

 

 

  Because the start address on the remote register 

side is an "odd address", new and old data may be 
mixed in 16-bit (1-word) units. 

 
2) Access by the sequence program must be made in units of even points. 

 

RWr00
RWr01
RWr02
RWr03

D000

CPU device

RWr00
RWr01
RWr02
RWr03

Remote register

Master station

D001
D002
D003

Programmable
controller CPU

D001
D002
D003

D000

FROM

DFRO

Programmable
controller CPU

CPU device

Remote register

Master station

 

 

  Because the access is made for each single point 

(1-word), new and old data may be mixed in 16-bit 
(1-word) units.