5-2
5.1 Contact Instructions
5.1.1 Operation start, series connection, parallel connection
LD, LDI, AND, ANI, OR, ORI
5.1
Contact Instructions
5.1.1
Operation start, series connection, parallel connection
LD, LDI, AND, ANI, OR, ORI
F
unct
i
on
LD, LDI
(1) LD is the normally open operation start instruction, and LDI is the normally closed operation
start instruction. They read ON/OFF information from the specified device*
1
, and use that as
the operation result.
*1 : When a bit specification is made for a word device, the device turns ON or OFF depending on the 1/0 status
of the specified bit.
: Devices used as contacts (Bit)
Setting
data
Internal device
R, ZR
J
\
U
\G
Zn
Constant
Others
DX,BL
Bit
Word
Bit
Word
−
U
n
i
versa
l
UD
Hi
g
h
Per
f
ormance
X1
/D0.
1
X1
/D0.
1
Bit device num
b
er/
b
it s
p
eci
f
ication
f
or
w
ord devices (
)
X2
/D0.
2
X2
/D0.
2
X
3/D0.3
X
3/D0.3
LD
LDI
AND
ANI
OR
ORI
S
s
s
Summary of Contents for MELSEC Q Series
Page 1: ...Structured Programming Manual Mitsubishi Programmable Controller QCPU Common Instructions ...
Page 2: ......
Page 14: ...A 12 MEMO ...
Page 340: ...6 178 MEMO MTR ...
Page 708: ...7 368 MEMO ...
Page 776: ...8 68 MEMO ...
Page 796: ...9 20 MEMO ...
Page 804: ...App 8 MEMO ...
Page 812: ...Index 8 MEMO ...
Page 815: ......