Unipulse F156, Operation Manual

Page: 24 / 160

3.CC-LINK INTERFACE
15
3-4. Outline of the Buffer Memory for Communication
The Mitsubishi PLC CC-Link master/local unit communicates with the F156 by using the buffer
memory in the unit. Hereafter,
the master unit (master station) is called “M” and
the F156 (remote device station) is called “R” in the explanation.
Since one F156 occupies two stations, station numbers are set as shown below when two or
more F156s are connected. The upper column and lower column show the buffer name and
buffer address (head), respectively. As just described, the addresses allocated to the remote
stations in the master station change according to the station number.
Specified F156s are accessed by using these buffer addresses.
In the application program of the PLC, the buffer memory is accessed by the FROM/TO
instruction at A series.
The following explanations are given on the F156 of station No. 1.
Station
No.
Remote input Remote output Remote register
32 points/
station
32 points/
station
M → R
4 word/station
R → M
4 word/station
1 RX000h RY000h
RW ｗ 0000
RWr0000
00E0h 0160h 01E0h 02E0h
RX020h RY020h
RW ｗ 0004
RWr0004
00E2h 0162h 01E4h 02E4h
3 RX040h RY040h
RW ｗ 0008
RWr0008
00E4h 0164h 01E8h 02E8h
RX060h RY060h
RW ｗ 0012
RWr0012
00E6h 0166h 01ECh 02ECh
5 RX080h RY080h
RW ｗ 0016
RWr0016
00E8h 0168h 01F0h 02F0h
1st
2nd
F156
F156