110
1 FUNCTIONS
1.7 Communications Using MODBUS/TCP
MODBUS device assignment parameters
The MODBUS device assignment parameters are used to associate the MODBUS devices with the device memory areas of
the CPU module. This enables direct access from a MODBUS/TCP master device to the device memory areas of the CPU
module.
The following shows the setting image of the MODBUS device assignment parameters.
M8191
Y1FFF
L4
L8191
SD2047
D999
D6000
D12287
M4700
M1201
M0
Y0
L0
SD0
D0
8192
2048
1000
6288
3500
3500
8192
5
5
2048
1000
6288
012191
065536
400001
465536
436287
000001
003500
004000
065000
065004
401000
404047
402000
430000
1201
3500
0
3999
8192
64999
2048
1000
6000
29999
6288
M(0090H)
Y(009DH)
L(0092H)
SD(00A9H)
D(00A8H)
D(00A8H)
0
0
0
0
5
1999
0
Coil
CPU module device memory
Internal relay (M)
Output (Y)
Latch relay (L)
Special register (SD)
Data register (D)
MODBUS device
Holding register
MODBUS device assignment
parameter setting example
Coil assignment 1
Device code
Head device number
Head coil number
Assignment points
Coil assignment 2
Device code
Head device number
Head coil number
Assignment points
Coil assignment 3
Device code
Head device number
Head coil number
Holding register assignment 1
Device code
Head device number
Head holding register number
Assignment points
Holding register assignment 2
Device code
Assignment points
Holding register assignment 3
Device code
Assignment points
Assignment points
Head device number
Head holding register number
Head device number
Head holding register number
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