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9 DATA COMMUNICATION USING THE PREDEFINED PROTOCOL
Item Description
Byte Swap
Disable (lower upper)/
Enable (upper lower)
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.
Specify a starting device to store variable value.
The following lists the available devices.
Classification
Device
name
Device
symbol
Input
Relay
X
Output
Relay
Y
Internal
Relay
M
Latch
Relay
L
Link
Relay
B
Data
Register
D
Internal User
1,
2
Link Register
W
R
2
File Register
File Register
ZR
Buffer memory
G device
G
Data Storage Area
Specification
1: Do not set local devices.
2: Set within the device range specified in the following screen.
Project window [Parameter] [PLC Parameter] [Device]
Summary of Contents for MELSEC LJ71C24
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Page 18: ...A 16 A 16 INDEX REVISIONS WARRANTY...
Page 22: ...A 20 A 20 2 LJ71C24 R2 LJ71C24 R2 Before Using the Product...
Page 23: ...A 21 A 21 MEMO...
Page 38: ...4 2 4 2 4 PROCEDURES PRIOR TO OPERATION MEMO 4...
Page 105: ...7 30 7 30 7 SETTINGS FOR THE C24 MEMO...
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