Bit Data - Mitsubishi Electric MELSEC Q Series Programming Manual

Bit data

Bit data are data handled in units of 1 bit, such as contacts and coils.
'Bit devices' and 'bit-specified word device' can be used as bit data.
Using bit devices
A bit device is specified in unit of one point.
M0
EN
Using word devices
By specifying a bit number for a word device, 1/0 of the specified bit number can be 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
Specify a bit device of word device as ''[Word device].[Bit number]". (Bit number is specified 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).
(Example: Z0.0 is not available).
M0
EN
D0.5
EN
For FXCPU, bit specification of a word device can be used for FX
4 PROGRAM CONFIGURATION
36
4.4 Method for Specifying Data
One point of M0 is
the target bit device
SET
ENO
d Y10
One point of Y10 is
the target bit device
Bit-specified word device
SET
(Turns ON bit 5 (b5) of D0)
ENO
d D0.5
Bit-specified word device
(Turns ON/OFF according to the
SET
status (1/0) of bit 5 (b5) of D0)
ENO
d Y10
to
Each bit of a word device can be
used (1=ON, 0=OFF)
b0
and FX .
3U 3UC