Bit Data - Mitsubishi MELSEC-Q Series Programming Manual

4.4.1

Bit data

Bit data are data handled in units of 1 bit, such as contacts and coils.
'Bit devices' and 'bit specification for word devices' can be used as bit data.
(1) Using bit devices
A bit device is specified in unit of one point.
(2) Using word devices
(a) By specifying a bit number for a word device, 1/0 of the specified bit number can be
(b) Specify a bit for word device as '
M0
D0.5
4.4 Method for Specifying Data
4-22
4.4.1 Bit data
M0
SET
EN ENO
d
used as bit data.
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
in hexadecimal.)
For example, bit 5 (b5) of D0 is specified as D0.5 and bit 10 (b10) of D0 is specified as
D0.A. Note that bit specifications are not applicable for timers (T), retentive timers (ST),
counters (C), and index registers (Z). (Example: Z0.0 is not available).
SET
EN ENO
d D0.5
SET
EN ENO
d Y10
For FXCPU, bit specification for word devices can be used for FX
One point of M0 is
the target bit device
Y10
One point of Y10 is
the target bit device
to
Word device
Bit specification for word devices
(Turns ON bit 5 (b5) of D0)
Bit specification for word devices
(Turns ON/OFF according to the
status (1/0) of bit 5 (b5) of D0)
Each bit of a word device can be
used (1=ON, 0=OFF)
. Bit number '. (Bit number is specified
3U
b0
and FX .
3UC