Mitsubishi Electric FX3U-ENET-ADP User Manual page 80

FX -ENET-ADP User's Manual
3U
<Note>
C200 to C255 (Current Values) Batch Read
Since C200 to C255 are 32 bit devices, the device points should be specified with twice as many points as are
actually read.
Also, make sure that the device points are specified by an even number.
If they are specified by an odd number, the batch read cannot be performed. (Error code 57H will be stored)
Example) When 32 devices are read at one access from C220 to C251 in the PLC on which the Ethernet
adapter is mounted.
1) Communication in binary code
(Data name)
External
*
device side
(Example)
01 FF
H
(Data name)
PLC side
(Example)
74
Head device
L H L - - - -
0A 00 DC 00 00 00 4E
H H H H H H H H
CN220
32 points x 2 = 64 word
H
43 40 00
H H H
*
81 00
H H
12345678=00BC614E
7 Communication Using MC Protocol
7.5 Device Memory Read/Write
4 bytes x 32=128 bytes
Head data
Low High Low
16bit 16bit 16bit
L - H L - H L - H
4E 61 BC 00 40
H H H H H
45678912=02B90140
H
Last data
High
16bit
L - H
01 B9 02
H H H
H