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7 HOW TO READ INSTRUCTIONS
7 HOW TO READ INSTRUCTIONS
The following format will be used to explain to read instructions presented hereafter.
1)
2)
3)
4)
5)
7
1) Shows the item No. in the instruction summary.
2)
is added to devices that can be used the instruction.
The usage classifications for devices that can be used is shown below.
Internal devices
(System, user)
Device
classifications
Bit
X, Y, M,
T, ST, C,
Usable
L, SM, F,
D, W, SD,
devices *3
B, SB,
SW, FD,
FX, FY *2
@
*1: The devices that can be set are given in the Constant and others field.
*2: FX and FY can be used with only bit data and FD with only word data.
*3: For the explanation of each device, refer to the QCPU User's Manual (Function Explanation, Program Fundamentals).
7 - 1
MELSECNET/H
direct J
File register
Word
Bit
J
\X
J
\Y
R, ZR
J
\B
J
\SB
Intelligent
Index
\
function
register
module
Z
Word
U
\ G
J
\W
U
\G
Z
J
\SW
MELSEC-Q
Constant *1
Other *1
Decimal constant
P, I, J, U,
Hexadecimal constant
DX, DY,
Real number constant
N, BL, TR,
Character string constant
BL\S, V
7 - 1
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