Mitsubishi Electric MELSEC FX3U Programming Manual page 778

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Program example
In the program example shown below, D1 and D2 are logged to the area from R2048 to R6143 every time
X001 turns ON.
X001
FNC293
LOGRP
Initial value
R2048 HFFFF
R2049 HFFFF
R2050 HFFFF
R2051 HFFFF
R2052 HFFFF
R5899 HFFFF
R5900 HFFFF
R5901 HFFFF
R6143 HFFFF
776
D1 K2 R2048
X001
OFF→ON
1st time
H1234
H5678
HFFFF
HFFFF
HFFFF
Because two words
are used, low-order
two bits are set to
OFF (0).
HFFFC
HFFFF
HFFFF
HFFFF
D1 H1234
D2 H5678
D100 H0000 H0002
33 Extension File Register Control – FNC290 to FNC299
33.4 FNC293 – LOGR / Logging R and ER
K2 D100
X001
OFF→ON
2nd time
H1234
H5678
H9ABC
H1122
HFFFF
HFFF0
HFFFF
HFFFF Because two words
are used, low-order
two bits are set to
OFF (0).
HFFFF
D1 H9ABC
D2 H1122
H0004
Data writing
area
Writing position
control area