Designating Data; Using Bit Data - Mitsubishi MELSEC-Q/L Programming Manual

3.2

Designating Data

The following six types of data can be used with CPU module instructions.
Data that can be handled by
CPU module
3.2.1

Using bit data

Bit data is data used in one-bit units, such as for contacts or coils.
"Bit devices" and "Bit designated word devices" can be used as bit data.
(1) When using bit devices
Bit devices are designated in one-point units.
M0
SET
(2) Using word devices
(a) Word devices enable the use of a designated bit number 1/0 as bit data by the designation of that bit number.
b15
Word device 1/0 1/0 1/0 1/0 1/0 1/0 1/0 1/0 1/0 1/0 1/0 1/0 1/0 1/0 1/0 1/0
(b) Word device bit designation is done by designating "
(Designation of bit numbers is done in hexadecimal.)
For example, bit 5 (b5) of D0 is designated as D0.5, and bit 10 (b10) of D0 is designated as D0.A. However, there
can be no bit designation for timers (T), retentive timers (ST), counters (C) or index register (Z). (Example Z0.0 is
not available).
X0
D0.5
...Page 83, Section 3.2.1
Bit data
Numeric data
Integer data
Real number
(floating point) data
...Page 90,
Character string data
Section 3.2.5
Designation of 1 point
of bit device M0
Y10
Designation of 1 point
of bit device Y10
to
Bit designated for word device
(Bit 5 (b5) of D0 is turned ON if X0 is ON.)
SET D0.5
Bit designated for word device
(Turns ON Y10 if bit 5 (b5) of D0 is ON (1).)
SET Y10
...Page 84, Section 3.2.2
Word data
Double-word data
Single-precision
floating point data
Double-precision
floating point data
b0
Each bit of a word device can be
used (1=ON, 0=OFF)
Word device Bit No.
.
...Page 85, Section 3.2.3
...Page 88,
Section 3.2.4 (1)
...Page 88,
Section 3.2.4 (2)
".
83
2
3
4
5
6
7
8