Mitsubishi FX3U-20SSC-H User Manual page 259

FX -20SSC-H Positioning Block User's Manual
3U
2. How to read and write the bit information such as status information and operation
command 1
1) Direct specification of buffer memory
Specify the buffer memory directly as the source or destination in applied instructions, and read or write
the contents..
Unit No. (0 to 7)
a) Reading and transferring the bit information to auxiliary relays
In the program below, the contents of the buffer memory (BFM #28) in unit No. 1 are read and
transferred to auxiliary relays (M40 to M55).
Read
command
M40
M41
M55
b) Reading and transferring bit information to data registers
In the program below, the contents of the buffer memory (BFM #28) in unit No. 1 are read and
transferred to a data register (D200). The read bit information is used in bit specification of word
devices.
Read
command
D200.0
D200.1
D200.F
U \G
number
Buffer memory No. (0 to 15399)
FNC 12
MOV
Unit No.
Buffer memory No.
FNC 12
MOV
Unit No.
Buffer memory No.
12.1 Reading/Writing Buffer Memory
is substituted with a
U1\G28 K4M40
Transfer
result
U1\G28 D200
Transfer
result
12 Program Example
11
12
13
A
B
253