Mitsubishi MELSEC-A series, Programming Manual

Page: 274 / 508

7. APPLICATION INSTRUCTIONS
7
−
72
MELSEC-A
DERO , PRC
(1) Reads data of "n3
×
2" words which begin with the address specified at "n2" of
buffer memory in the remote terminal module specified at "n1", and stores the
data in the devices starting with the one specified at (D1).
CPU module
n2
Device specified
at (D)
Remote terminal
buffer memory
(n3 2)
words
(n3 2) points
n2+1
REMARK
The method for specifying "n1" for an A2C is different from that for an A52G as mentioned below.
1) A2C: Head station number of remote terminal modules is specified at "n1".
2) A52G: specify "n1" with (head number of remote terminal module) + (100).
(Example)
When the head number of remote terminal module is 9, specify K109 (9+100).
(2) The bit device specified at (D2) is used as a communication complete flag.
This device turns ON after execution of the END instruction of the scan during
which communication processing with a specified remote terminal module is
completed, and turns OFF after execution of the END instruction of the next
scan.
Station
No. 1
Station
No. 5
AX11C
4 stations
AX11C
4 stations
X000
to
X01F
X020
to
X03F
Station
No. 17
Station
No. 13
A2C
CPU
Head station number of
remote terminal modules
K9 or H9
AY51C
4 stations
A68ADC
4 stations
Y080
to
Y09F
060
to
07F
Station
No. 9
AD61C
4 stations
040
to
05F
Communication end
Communication start
Sequence program
flow
Device No. specified
at (D2)