Mitsubishi FX2N-32CCL User Manual page 29

FX -32CCL CC-Link Interface Block
2N
Details of buffer memory
[BFM #0 to #7 (remote output RY00 to RY7F)]
• Sixteen remote output points RYoF to RYo0 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
The FX PC reads this information to bit devices and word devices of the PC using FROM instructions.
• In the FX -32CCL, the remote output point range (RY00 to RY7F) varies depending on the selected
2N
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. (
Example in which the ON/OFF status of BFM #0 b0 to b15 is read to the auxiliary relay in the FX PC
Read by FROM instruction (BFM #0 → M15 to M0)
FNC78
FROM
Block No. Transfer
Use
example
M0(RY00)
M1(RY01)
M15(RY0F)
-32CCL.
2N
4.2)
K0 K0 K4M0 K1
Transfer Number of
source destina- transfer
(BFM #0) tion (M15 points
to M0) (BFM #0, 1
point)
Drive circuit
Assignment of Buffer Memory (BFM) 5
b15
R Y R Y R Y R Y R Y R Y R Y R Y R Y R Y R Y
0 F 0 E 0 D 0 C 0 B 0 A 0 9 0 8 0 7 0 6 0 5
FR O M instruction
M M M M M M M M M M M
1 5 1 4 1 3 1 2 1 1 1 0 9 8 7 6 5
b0
R Y R Y R Y R Y R Y
B F M #0
0 4 0 3 0 2 0 1 0 0
P C auxiliary
M M M M M
4 3 2 1 0 relay
5-3