Outline Of The Buffer Memory For Communication - Unipulse F156 Operation Manual

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.
Station Remote input
No.
1
3
5
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.
Remote output
32 points/ 32 points/
station station
RX000h RY000h
00E0h 0160h
RX020h RY020h
00E2h 0162h
RX040h RY040h
00E4h 0164h
RX060h RY060h
00E6h 0166h
RX080h RY080h
00E8h 0168h
3.CC-LINK INTERFACE
Remote register
M → R R → M
4 word/station 4 word/station
RWr0000
RWｗ0000
01E0h 02E0h
RWr0004
RWｗ0004
01E4h 02E4h
RWr0008
RWｗ0008
01E8h 02E8h
RWr0012
RWｗ0012
01ECh 02ECh
RWr0016
RWｗ0016
01F0h 02F0h
1st
F156
2nd
F156
15