Precautions When Operating Data Link System - Mitsubishi MELSEC-A Series Reference Manual

4. COMPOSITION OF A THREE-TIER SYSTEM
4.1.2

Precautions when operating data link system

This section explains precautions for three-tier system using MELSECNET data link.
(1)
(2)
Setting link parameters
In the three-tier system, setting link parameters to CPU modules for the master
stations in the second and third tiers is required.
For link parameter setting, refer to Section 5.3.7 and Chapter 7.
Restriction on use of link modules
(a) For the CPU module other than the AnUCPU, A2ASCPU(S1), A2USHCPU-S1,
QnACPU, and Q2AS(H)CPU(S1)
Only one of the following link modules can be used with a CPU module.
When configuring the three-tier system, use a CPU module having a link function
with any of the following link modules.
AJ71AP21
AJ71AP21-S3
A1SJ71AP21
AJ71AR21
A1SJ71AR21
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