Mitsubishi Electric QJ71MB91 User Manual page 171

7
PARAMETER SETTING
POINT
In the access to a bit device (coil/input) of a slave, the fraction bits are handled as
described below.
• Bit device read
Automatic communication parameter: Read setting
Target MODBUS Head buffer memory
device type setting
0200 (input)
H
<QJ71MB91 buffer memory>
b15 to
1000
H
1001
H
1002
H
Remaining area is masked with 0
• Bit device write
Automatic communication parameter: Write setting
Target MODBUS
Device type setting
0001 (coil)
H
<QJ71MB91 buffer memory>
b15
to
3000
H
Remaining area is ignored
7.2.1 Automatic communication parameter details
Target MODBUS
address device head number
1000 (4096) 16628
H
<Target slave device area>
b0 b15
Read
Head buffer Target MODBUS
Memory address device head number
3000 (12288) 1305
H
<Target slave device area>
001306
b15
b0
Write
001310
7.2 Automatic Communication Parameter
Access points
35
116629
to
b0
116640 to 116625
116656 to 116641
116672 to 116657
116663
Access points
5
b0
to
001312 to 001297
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