Mitsubishi MELSEC LJ71C24, User Manual

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3 SPECIFICATIONS
(Continued from preceding page)
Model name
Item
LJ71C24 LJ71C24-R2
Parity check Selected for all protocols and when this check is enabled, ODD or EVEN is selected by a parameter.
Error detection
Sum check code
For the MC or bidirectional protocol, selected by a parameter.
For the predefined protocol, whether or not a sum check code is needed depends on the selected protocol.
For the nonprocedural protocol, selected in the user frame.
RS-232 RS-422/485
DTR/DSR control Enabled Disabled
RS/CS control Enabled Disabled
CD(DCD) signal control Enabled Disabled
DC1/DC3 (Xon/Xoff) control
DC2/DC4 control
Enabled Enabled
Transmission control
•
DTR/DSR signal control and DC code control are selected by the user.
RS-232 1:1 1:1 Line configuration
of connection
(External device
side: CPU module
side)
RS-422/485 1:1, 1:n, n:1, m:n —
MC protocol
communication
1:1 1:1
Predefined protocol
communication
1:1 1:1
Nonprocedural
protocol
communication
1:1 1:1
RS-
232
Bidirectional
protocols
communication
1:1 1:1
MC protocols
communication
1:1, 1:n, m:n
Predefined protocol
communication
1:1, n:1
Nonprocedural
protocol
communication
1:1, 1:n, n:1
Line configuration
of data
communication
(External device
side: CPU module
side)
RS-
422/
485
Bidirectional
protocols
communication
1:1
—
RS-232 Maximum 15 m Maximum 15 m Transmission
distance (Overall
distance)
RS-422/485
Maximum 1200 m
(overall distance)
—
Flash ROM write count Maximum 100,000 times to the same area
Number of occupied I/O points 32 points (I/O assignment: Intelli: 32 points)
5V DC internal current consumption 0.39A 0.26A
External dimensions 90 (H)×28.5 (W)×95 (D)[mm]
Weight 0.17Kg 0.14Kg
1 Set to transfer data with external devices using a full-duplex communication system when the C24 is
started. For switching to a half-duplex communication system, refer to the User's Manual (Application).
3