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CHAPTER 6 COMMUNICATIONS AMONG CPU MODULES
6
6.1 Communications Using the CPU Shared Memory
6.1.2 Communications by auto refresh (using the multiple CPU high speed transmission area)
(4) Auto refresh setting examples and data flow
The data flow among CPU modules will be as follows in a multiple CPU system containing three CPU modules
with two auto refresh range settings.
(a) Auto refresh setting examples
The following are the examples of auto refresh settings to explain the data flow.
(a) Send device setting (CPU No.1)
(d) Receive device setting (CPU No.2)
(g) Receive device setting (CPU No.3)
(b) Receive device setting (CPU No.1)
(e) Send device setting (CPU No.2)
(h) Receive device setting (CPU No.3)
(c) Receive device setting (CPU No.1)
(f) Receive device setting (CPU No.2)
(i) Send device setting (CPU No.3)
(1) Auto refresh setting of CPU No.1 (2) Auto refresh setting of CPU No.2 (3) Auto refresh setting of CPU No.3