Bfm#8-#23] Remote Register (Rww/Rwr) - Mitsubishi FX3U-64CCL User Manual

FX -64CCL User's Manual
3U
7.2.2

[BFM#8-#23] Remote register (RWw/RWr)

[BFM #8 to #23] Remote registers (RWw/RWr) are compatible with the FX
This area is available only when the expanded cyclic transmission is set to "single".
When the expanded cyclic transmission is set to "single", either of the following is available:
a) RWw/RWr: BFM #8 to #23
b) RWw: BFM #176 to #191 and RWr: BFM #304 to #319 (within the range of "single" expanded cyclic
transmission)
1) When the FROM instruction (or reading through direct buffer memory specification) is executed:
Remote registers (RWw) are involved
These devices read the data (Remote registers RWw) transmitted from the master station to the 64CCL.
2) When the TO instruction (or writing through direct buffer memory specification) is executed:
Remote registers (RWr) are involved
These devices write data (Remote registers RWr) to be transmitted from the 64CCL to the master station.
When the TO instruction (or direct buffer memory specification) is executed for writing to an area without
assigned link points, writing is invalid.
When the FROM instruction (or direct buffer memory specification) is executed for reading from an area
without assigned link points, the reading operation results in "0" being read.
The table below shows details for buffer memory allocation.
Read (FROM
BFM No.
instruction)
#8 RWw0
#9 RWw1
#10 RWw2
#11 RWw3
#12 RWw4
#13 RWw5
#14 RWw6
#15 RWw7
#16 RWw8
#17 RWw9
#18 RWwA
#19 RWwB
#20 RWwC
#21 RWwD
#22 RWwE
#23 RWwF
Caution
• When the expanded cyclic transmission is set to "double", "quadruple" or "octuple", writing with the TO
instruction (or direct buffer memory specification) to BFM#8 to #23 is invalid, and reading with the FROM
instruction (or direct buffer memory specification) results in "0".
• Refer to Appendix B for differences between the 64CCL and the FX
Number of occupied stations (Expanded cyclic setting : single)
Write (TO
instruction)
Occupies 1 station Occupies 2 stations Occupies 3 stations Occupies 4 stations
RWr0
RWr1
RWr2
RWr3
RWr4 -
RWr5 -
RWr6 -
RWr7 -
RWr8 -
RWr9 -
RWrA -
RWrB -
RWrC -
RWrD -
RWrE -
RWrF -
BFM (word) points 4
7.2 Buffer memory details
-32CCL.
2N
: Applicable -: With no allocation
-
-
-
-
- -
- -
- -
- -
8 12
-32CCL.
2N
7 Buffer Memory
1
2
3
4
5
6
7
8
16
9
A
35