Mitsubishi Melsec-L Series User Manual page 119

Item
Element Name Set a name of the element.
Select a format of the data length.
Code Type
ASCII Hexadecimal/ASCII Decimal/HEX
Select the data length on the line.
Data Length
The range is 1 to 4.
Forward Direction
(Upper Byte
Reverse Direction
(Lower Byte
Data Flow
Byte Swap (by Word)
Set the starting element number of the calculating range.
Start
Calculating The range is 1 to 32.
Range
Set the ending element number of the calculating range.
End
The range is 1 to 32.
9 - 9
(4) Length
Use this element when an element indicating the data length is included in a
packet.
When sending: Calculates the data length of a specified range, and adds the
When receiving: Verifies the data (setting value) corresponds to the length in
The following table shows the items.
Lower Byte)
Upper Byte)
9 DATA COMMUNICATION USING THE PREDEFINED PROTOCOL
result to a send packet.
the receive data as the data length of a specified range.
Description
When sending: Sends a calculated length,
from the upper byte.
When receiving: Receives data, from the
upper byte.
When sending: Sends a calculated length,
from the lower byte.
When receiving: Receives data, from the
lower byte.
When sending: Sends a calculated length
swapping the upper byte and
lower byte by word.
When receiving: Receives data swapping the
upper byte and lower byte by
word.
Remark
-
-
-
Not settable when
"Data Length" is 1
byte
-
9 - 9