Specifications

App - 90
Appendix 10.1 Send range settings
Each station's send range of link devices (low-speed LB, low-speed LW) is assigned to
the extended area (2000 to 3FFF) in 16-point units for LB (start :
0 to end:
F) and in one-point units for LW.
Each station's send range can also be assigned using a random station number
assignment sequence.
The B/W device numbers on the CPU side that correspond to the extended area are not
assigned.
(1) Device range
MELSECNET/H LB
CPU B
0
H 2000H
3FFFH
(8192)
(16383)
Normal cyclic transmission area Extended function area
(2) Screen setting
On the following screen that is displayed by clicking the
button on the network parameter setting screen, 768 points are assigned to the
send range for each station (low-speed LB, low-speed LW).
Send points
(LB/16-point, LW/1-point units)
Send range
(2000 to 3FFF)
POINT
(1) When double-word (32 bits) data is used, the 32-bit data guarantee is
automatically enabled when the 32-bit data guarantee conditions are satisfied. If
these conditions are not satisfied, a request to change the setting is displayed.
The conditions for the 32-bit data guarantee can be displayed by clicking the
Help-Network setting
button.
(2) The device points (B, W) of the CPU module can be increased by changing the
PLC parameters (8k to 16k). However, there are restrictions for the device points,
such as that the total must be less than 28.8k words.
(3) The total of the send ranges per station must not exceed 2000 bytes in the
low-speed cyclic transmission. (The send range for the normal cyclic transmission
is not included.)
(4) The LX and LY cannot be set as low-speed cyclic devices.