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2 multiple cpu system – MITSUBISHI ELECTRIC MOTION CONTROLLERS Q172DCPU User Manual

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2 MULTIPLE CPU SYSTEM

Table 2.7 Parameter setting items of Multiple CPU high speed transmission area setting

Item

Setting description

Setting/display value

Restriction

Consistency

check

CPU

CPU No. corresponding to displayed parameters. CPU No.1 to No.4

Set the number of points of data that each CPU
module sends.
Default value assigned to each CPU is shown
below.

Default value of CPU specific

send range [points]

Number of

CPUs

CPU
No.1

CPU
No.2

CPU
No.3

CPU
No.4

2

7k 7k — —

3 7k

3k

3k

4

3k 3k 3k 3k

CPU specific
send range

Range: 0 to 14k [points]
Unit: 1k [point]
(Points: Word in units)

• Set the total of all CPUs to be

the following points or lower.
When constituted with two
CPUs: 14k [points]
When constituted with three
CPUs: 13k [points]
When constituted with four
CPUs: 12k [points]

Provided

Automatic
refresh

Number of points used in the automatic refresh
function is displayed.
Number of points that is set by the "automatic
refresh setting" is displayed.

Range: 0 to 14336 [points]
Unit: 2 [points]

Do not exceed the CPU
specific send range [points].

User setting
area

Area size specified directly by program is
displayed.
The value where the "number of points set in the
automatic refresh" is subtracted from the "CPU
specific send range setting" is displayed.

Range: 0 to 14336 [points]
Unit: 2 [points]

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