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3. SPECIFICATIONS
MELSEC-A
3.3
Functions List
The tables below list the functions available when an external device (such
as a computer) and a PC CPU are connected by an AJ71 C24 module.
3.3.1
Functions available using dedicated protocols and commands
The functions available using dedicated protocols 1 to 4 are listed in Tables
3.3 and 3.4.
The commands in Table 3.3 are the ACPU common commands that are
employed when a CPU module (see Section 2.2) is used together with an
AJ71 C24.
The commands in Table 3.4 are the AnACPU dedicated commands that are
employed when the A2ACPU(P21IR21)(-Sl) or A3ACPU(P21/R21) is used
together with an AJ71C24.
Use the commands in Table
3.4
to access the AnACPU device memory.
Readlwrite of data can be done with the whole area of each device memory.
The functions in Tables 3.3 and 3.4 are also available when a multidrop link
of 1:n or m:n ratio configuration is made and when a computer link is made
using the MELSECNET system.
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