Mitsubishi Electric MELSEC FX3U Programming Manual page 772

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Program example
In the program example shown below, the extension registers R0 to R2047 in the sector 0 are initialized.
Note that the extension file registers ER0 to ER2047 are also initialized if a memory cassette is attached.
X000
• Extension registers (R) [inside the built-in RAM memory]
Device number
R0
R1
R2
R2047
770
FNC 07
WDT
FNC292
R0 K1
INITR
FNC 07
WDT
END
Current value
Before execution
H1234
H5678
H90AB
HCDEF
33 Extension File Register Control – FNC290 to FNC299
33.3 FNC292 – INITR / Initialize R and ER
After execution
HFFFF
HFFFF
HFFFF
HFFFF