Mitsubishi FX2N-32CCL, Руководство пользователя

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FX
2N
-32CCL CC-Link Interface Block Assignment of Buffer Memory (BFM) 5
5-3
Details of buffer memory
[BFM #0 to #7 (remote output RY00 to RY7F)]
• Sixteen remote output points RY
o
F to RY
o
0 are assigned for b15 to b0 of each buffer memory consist-
ing of 16 bits.
The ON/OFF status information shown by each bit indicates the contents of the remote output written
from the master unit to the FX
2N
-32CCL.
The FX PC reads this information to bit devices and word devices of the PC using FROM instructions.
• In the FX
2N
-32CCL, the remote output point range (RY00 to RY7F) varies depending on the selected
number of stations (1 to 4).
The upper 16 points in the final station are occupied by the CC-Link system as the system area, so can-
not be used as the user area. (
☞
4.2)
Example in which the ON/OFF status of BFM #0 b0 to b15 is read to the auxiliary relay in the FX PC
FNC78
FROM
K0 K0 K4M0 K1
Use
example
Drive circuit
Block No. Transfer
source
(BFM #0)
Transfer
destina-
tion (M15
to M0) Number of
transfer
points
(BFM #0, 1
point)
M0(RY00)
M1(RY01)
M15(RY0F)
Read by FROM instruction (BFM #0
→
M15 to M0)
~
R Y
0 F
R Y
0 E
R Y
0 D
R Y
0 C R Y
0 B
R Y
0 A
R Y
0 9
R Y
0 8
b 1 5
M
1 5
M
1 4
M
1 3
M
1 2
M
1 1
M
1 0
M
9
M
8
M
7
M
6
M
5
M
4
M
3
M
2
M
1
M
0
P C a u xilia ry
relay
F R O M in struc tio n
B F M # 0
R Y
0 7
R Y
0 6
R Y
0 5
R Y
0 4
R Y
0 3
R Y
0 2
R Y
0 1
R Y
0 0
b 0