7. APPLICATION INSTRUCTIONS
7 − 91
MELSEC-A
7.8.1 Local station data read, write
(LRDP, LWTP)
Available Device
Bit device Word (16-bit) device Constant Pointer
Level
Carry
flag
Error
flag
X Y M L S B F T C D W R A0 A1 Z V K H P I N
Digit specification
Index
M9012 (M9010, M9011)
n1 O O
(S) O O O O
(D) O O O O
n2 O O
O O
Functions LRDP
(1) Stores data of "n2" points, which begin with the device specified at (S) of the
local station specified at "n1", to the devices starting with the one specified at
(D) of the master station.
(2) When the LRDP instruction is being executed, M9200 of the master station
turns ON. When the execution is completed, M9201 of the master station turns
ON.
Since M9200 and M9201 remain ON after the completion of execution, turn
them off by the sequence program.
Applicable
CPU
All CPUs
LRDP
n1 (S) (D) n2
LWTP
n1 (D) (S) n2
Write command
Read command
n1 Local station number
LRDP
Head device number of local
station to be read
(S)
LWTP
Head device number of master
station which stores data to be
written
LRDP
Head device number of master
station which will store read data
(D)
LWTP
Head device number of local
station where data will be written
n2
Number of data read/written (1 to
32)
Setting data
Master station
Device specified at (S)
Local station No. n1
Device specified at (D)
n2 points
Transfer
n2 points
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