Specifications

4-22
4.4 Method for Specifying Data
4.4.1 Bit data
4.4.1 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.
(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
used as bit data.
(b) Specify a bit device of word device as ' . '. (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).
For FXCPU, bit specification of a word device can be used for FX3U and FX3UC.
M0
SET
EN ENO
dY10
One point of Y10 is
the target bit device
One point of M0 is
the target bit device
b15 b0
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
to
Word device
Each bit of a word device can be
used (1=ON, 0=OFF)
Word device
Bit number
Bit-specified word device
(Turns ON/OFF according to the
status (1/0) of bit 5 (b5) of D0)
Bit-specified word device
(Turns ON bit 5 (b5) of D0)
M0
SET
EN ENO
d D0.5
D0.5
SET
EN ENO
d
Y10