Mitsubishi Electric MELSEC-L Series - Appendix 8.3 Data Examples of Packet Elements

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Appendix 8.3 Data examples of packet elements
This section describes the procedures for the processing and practical data examples of each element placed in a
packet.
(1) Length
(a) Procedures
The E71 processes a Length element as follows.
30 H 31 H 32 H 33 H
Forward direction
Data flow [When sending]
30 H
31 H
32 H
33 H
Length calculating result
Conversion to
ASCII
hexadecimal
"0"(30 H )
"1"(31
H )
"2"(32
H )
"3"(33
H )
123
H
30 H 31 H 32 H 33 H
30 H 31 H 32 H 33 H
"0123"
"3210"
"2301"
Connected device
"3210"
"0123"
"1032"
Reverse direction
30
H
31 H
32 H
33 H
Byte swap
30
H
31 H
32 H
33 H
Sending
30 H 31 H 32 H 33 H
Forward direction
Data flow
[When receiving]
30 H
31 H
32 H
33 H
Length calculation result
Conversion from ASCII hexadecimal to binary
"0123"
"0123"
Connected device
"3210"
"1032"
Reverse direction
30
H
31 H
32 H
33 H
Byte swap
30
H
31 H
32 H
33 H
Sending
123
H
3210 H
1032 H