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5.2.4 Access to the intelligent function module buffer memory
Data in the buffer memory of intelligent function modules controlled by other CPU modules can be read regardless of
the "I/O Sharing When Using Multiple CPUs" setting in PLC parameter ("Multiple CPU Setting").
(1) Reading data from the buffer memory
Data can be read from the buffer memory of intelligent function modules controlled by other CPU modules in the
same way as in a single CPU system.
(2) Writing data to the buffer memory
Data cannot be written to the buffer memory of intelligent function modules.
If data is written to the buffer memory of an intelligent function module controlled by another CPU module,
"SP.UNIT ERROR" (error code: 2116) occurs.
1 1 1 1 1
2 222
Data can be read from the buffer memory.
Control CPU setting
Slot number
Intelligent function module
CPU 0 1 2 3 4 5 6 7
1 1 1 1 1
2 222
Data cannot be written to
the buffer memory.
Data cannot be written to the buffer memory.
Control CPU setting
Slot number
CPU 0 1 2 3 4 5 6 7
Intelligent function module