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2 MULTIPLE CPU SYSTEM
(b) Automatic refresh setting
Setting for use of the automatic refresh function in the Multiple CPU high
speed transmission area.
Up to 32 setting ranges can be set for each CPU module.
Automatic refresh setting screen and setting range are shown below.
Table 2.8 Parameter setting items of automatic refresh setting
Item Setting description Setting range Restriction
Data size
consistency
check
CPU
selection
Select the CPU module for editing of the
CPU specific send range setting.
CPU No.1 to No.4
• CPU No. which exceeds the
number of CPU modules cannot
be selected.
—
Setting No.
The setting No. for transmission of each
CPU module is displayed. Automatic
refresh is executed between devices set to
the same setting No. for all CPUs that
constitute the Multiple CPU system.
1 to 32 — —
Points
Set the number of points for data
communication.
Range: 2 to 14336 [points]
Unit: 2 [points]
• Setting which exceeds the
number of points of the self CPU
send area allocated to the each
CPU module (CPU specific send
range) cannot be set.
• Bit device can be specified in
units of 32 points (2 words) only.
Provided
Start
Specifies the device which performs the
data communication (automatic refresh).
Specifies the device sent by the self CPU
when the "Send source CPU selection" is
the self CPU, and specifies the device
received by the self CPU when the CPU
specific send range setting is the other
CPU.
Usable device ( X, Y, M, B,
D, W, #, SM, SD)
Note) Set "blank" when
automatic refresh is
not executed.
• Bit device can be specified in
units of 16 points (1 word) only.
• Device number cannot be
duplicated.
None