Mitsubishi Electric QJ71E71-100 User Manual page 120

(2) Length
This element is used when an element indicating the data length is included in a packet.
• When sending: The data length of the specified range is calculated and the result is added to a send packet.
• When receiving: The data (setting value) corresponds to the Length in the receive data is verified as the data
length of the specified range.
Length elements can be placed anywhere in the data part.
The following table lists the items.
Item
Element Name Set name of the element.
Select a format of the data length.
Code Type
ASCII Hexadecimal/HEX
Select the data length on the line.
Data Length
The range is 1 to 4.
Forward Direction
(Upper ByteLower Byte)
Reverse Direction
Data Flow (Lower ByteUpper Byte)
Byte Swap (by Word)
Select the start element number of the calculating range.
Start
The range is 1 to 32.
Calculating
Range
Select the end element number of the calculating range.
End
The range is 1 to 32.
*1 Available only when the Data Length is 4 bytes.
118
Description
When sending: The calculated Length is sent from the
upper byte.
When receiving: The data is received from the upper byte.
When sending: The calculated Length is sent from the
lower byte.
When receiving: The data is received from the lower byte.
When sending: The calculated Length is sent swapping
the upper byte and lower byte by word.
*1
When receiving: The data is received swapping the upper
byte and lower byte by word.
Remark
-
-
-
Not settable when Data
Length is 1 byte
-