Filter
Top Products
4 - 18 4 - 18
MELSEC-GOT
4 MONITORING SPECIFICATION
4.6.3 Random read command
(1) Random read command
This is a command to read data from several different GOT internal devices to
the remote register.
(2) Command format
Transfer Direction Addresses Write data
RWwm (Higher byte) 3: Random read setting
RWwm (Lower byte)
When the occupied points are 2 stations
1 to 6 : GOT internal device point to be read
When the occupied points are 4 stations
1 to 14 : GOT internal device point to be read
Master station GOT
RWwm + 1 to RWwn + F
0 to 1023 : GOT internal device numbers to be read
(Storage for the setting mentioned above)
RWrn to RWrn + D
Stores the data to be read from the GOT internal
device (Storage for the setting mentioned above)
GOT Master station
RWrn + E, RWrn + F
———
(3) Communication overview
When reading data from the GOT internal device GD100, 200 and 300 to the
remote register.
0303
H
RWw0
1) 2)
0064
H
00C8
H
012C
H
RWw1
RWw2
RWw3
1234
H
RWr0
0E54
H
0066
H
RWr1
RWr2
FROM
0303
H
RWw0
0064
H
00C8
H
012C
H
RWw1
RWw2
RWw3
1234
H
RWr0
0E54
H
0066
H
RWr1
RWr2
1234
H
GD100
0E54
H
GD200
GD300
0066
H
TO
4) 3)
2)
GOT internal device
PLC CPU
Master station
remote register
GOT
remote register
1) Store the continuous read command data in the master station's remote
register (RWw).
2) Turn on the GOT request flag, and read the data in GD100, 200,and 300 are
read to the remote register (RWr) by storing the command data in the GOT
remote register (RWw).
(Command execution)
The GOT complete flag turns on when the command processing is complete.
3) By link scan, the read data is stored in the master station's remote register
(RWr).
4) Read the data to the PLC CPU using the FROM instruction, etc.