Bit Specification Of A Word Device (D .B) - Mitsubishi Electric MELSEC iQ-F Series Training Manual

Digit Specification of Bit Devices (K1M0)
• A word device D (data register), T (current value of a timer), or C (current value of a counter) consists of 16 bits (one word),
and data is basically transferred in one device.
• With 16 bit devices (such as X, Y, and M), data of the same size as a word device can be handled. The device numbers
allocated to the bit devices must be in consecutive order.
• Bit devices can process data in units of four points.
• Other bit devices can also process data in the same way.
(Internal relay (M))
• As long as the device numbers of four bit device areas are in consecutive order, any bit device can be specified as the start
device.
Bit Specification of a Word Device (D[ ].b)
By specifying a bit of a word device, the specified bit can be used as bit data.
When specifying a bit of a word device, use a word device number and bit number (hexadecimal).
(Example: D0.0 ... Indicates the bit 0 of data register (D).)
Target word device
Bit number
D0.F
D0 F E D C B A 9 8 7 6 5 4 3 2 1 0
M M M M M M M M
19 18 17 16 15 14 13 12
: Data register or special data register
: 0 to F (hexadecimal)
D0.3
16 bits
61
M M M M M M M M
11 10 9 8 7 6 5 4
K2M6
K3M5
M M M M
3 2 1 0
K1M0