Mitsubishi Melsec-L Series User Manual page 122

Item
Byte Swap
Data Storage Area
Specification
9 - 12
Disable (lower upper)/
Enable (upper lower)
Specify a starting device to store variable value.
The following lists the available devices.
Classification
Input Relay
Output Relay
Internal Relay
1, 2
Internal User
Latch Relay
Link Relay
Data Register
Link Register
File Register File Register
Buffer memory G device
1: Do not set local devices.
2: Set within the device range specified in the following screen.
Project window [Parameter]
9 DATA COMMUNICATION USING THE PREDEFINED PROTOCOL
Description
When sending: When "Enable" is selected, sends data swapping
the upper byte and lower byte by word (2 bytes).
When "Unit of Stored Data" is "Lower Byte +
Upper Byte" and "Data Length" is an odd number
of bytes, sends the upper byte at transmission of
the last byte.
When "Unit of Stored Data" is "Lower Bytes Only"
and "Data Length" is an odd number of bytes,
sends data without any byte swap at transmission
of the last byte.
When receiving: When 'Enable' is selected, receives data
swapping the upper byte and lower byte by word
(2 bytes).
When "Unit of Stored Data" is "Lower Byte +
Upper Byte" and "Data Length" is an odd number
of bytes, stores the last byte to the upper byte.
When "Unit of Stored Data" is "Lower Bytes Only"
and "Data Length" is an odd number of bytes,
stores the last byte without any byte swap.
Device
Device name
symbol
X
Y
M
L
B
D
W
R
ZR
G
[PLC Parameter]
2
[Device]
9 - 12