Mitsubishi QJ71MB91 - Page 267

9
PROGRAMMING
9.3 Program Examples for Use in MELSECNET/H Remote I/O Network
9.3.2 MODBUS(R) device assignment parameters
9 - 38
9
PROGRAMMING
10
DEDICATED INSTRUCTIONS
11
TROUBLESHOOTINGAPPENDICESINDEX
(2) Communications
In the program example shown in this section, the following MODBUS device
assignment parameters are set for the setting target , QJ71MB91.
(a) MODBUS device assignment parameter assignment diagram
Figure 9.41 MODBUS device assignment parameter settings
R
Output (Y)
Coil
000001Y0
Y100
Y2FF
Y1FFF
065536
300001
303500
D3500
D8999
D12287
365536
308999
400001
401024
465536
MELSECNET/H remote I/O
station device
000512
512 points
Data register (D)
5500 points
D0
QJ71MB91 buffer memory
User free area
5000H
5500H
58FFH
5FFFH
1024 points
MODBUS device
512 points
5500 points
Holding register
Input register
1024 points