External Fx I/O Device – Fnc 70 To Fnc 79 - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
15. External FX I/O Device – FNC 70 to FNC 79
FNC 70 to FNC 79 provide instructions to receive data from and send data to external devices mainly using
inputs and outputs in PLCs.
Because these instructions easily achieve complicated controls with a minimum required sequence program
and external wiring, they are similar to handy instructions described in the preceding chapter.
FROM and TO instructions essential for controlling special units and special blocks are included in this group.
(In FX and FX
3U
FNC No. Mnemonic
70
71 HKY
72 DSW
73 SEGD
74 SEGL
75 ARWS
76 ASC
77
78 FROM
79
438
PLCs, transfer can be executed also by MOV instruction.)
3UC
Symbol
TKY
HKY
DSW
ARWS
ASC
PR
FROM
TO
TO
Ten Key Input
TKY S D1 D2
Hexadecimal Input
S D1 D2 D3
Digital switch (thumbwheel input)
S D1 D2 n
Seven Segment Decoder
SEGD S D
Seven Segment With Latch
SEGL S D n
Arrow Switch
S D1 D2 n
ASCII code data input
S D
Print (ASCII Code)
PR S D
Read From A Special Function Block
m1 m2 D n
Write To A Special Function Block
m1 m2 S n
15 External FX I/O Device – FNC 70 to FNC 79
Function Reference
Section
15.1
Section
15.2
Section
15.3
Section
15.4
Section
15.5
Section
15.6
Section
15.7
Section
15.8
Section
15.9
Section
15.10