Mitsubishi Electric QJ71MB91 User Manual page 285

10
DEDICATED INSTRUCTIONS
(5) Program example
W0000
W001F
This section provides an example program in which device data are read from and
written to the holding register of the slave (Station No. 1) on channel 1 as shown
below.
This frame made shall be the RTU mode.
The I/O signals of the QJ71MB91 are X/Y00 to X/Y1F.
QJ71MB91
(master)
CH1(RS-232)
QJ71MB91
(master)
Device memory
D100
100 points
D199
32 points
Figure 10.3 Configuration example for MBRW instruction execution
MODBUS
slave device
(station No.1)
MODBUS
slave device
MODBUS device
400500
32 points
400531
411000
100 points
411099
10.2 Z(P).MBRW
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10
11
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