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MELSEC-
A
7 MEMORY CONFIGURATION AND DATA PROCESS
The data transmission is carried out as shown in the previous pages, but the main
method of using this data process is shown below.
(A) Correcting the execution data (OS memory)
The following methods can be used to correct the OS memory.
From peripheral device
Using sequence program
Setting change?
Set automatic
write of flash ROM
Do not set
automatic write of
flash ROM
Transmit data in buffer
memory to OS memory
when remote station
READY signal
[RX(n+7)B] changes
from OFF to ON.
Use new setting
value in future
Change setting
value temporarily
Correct data with peripheral device
Write new value into buffer memory using RIWT
command (transient transmission)
Write data correct with peripheral device into OS memory
Complete
[Transmission process (10)]
Pr.1 to Pr.6
Pr.10 to Pr.25
Pr.45 to Pr.58
Pr.7 to Pr.9
• • • User work
• • • D75P2 state
Pr.26 to Pr.44
Da.1 to Da.18
[Transmission process (2)]
[Transmission process (3)]