Mitsubishi MELSEC-A Series Reference Manual page 55

4. COMPOSITION OF A THREE-TIER SYSTEM
Module Model
A1SJHCPU
A1SHCPU
A2SHCPU
A1SJ71AP21
A2ASCPU
/R21
A2ASCPU-S1
A2USHCPU-
S1
A0J2HCPU
A1NCPU
A2NCPU
A2NCPU-S1
A3NCPU
AJ71AP21/
A2ACPU
R21
A2ACPU-S1
AJ71AP21-S3
A3ACPU
CPU
A2UCPU
module
A2UCPU-S1
+
A3UCPU
link
module
A4UCPU
Q2ASCPU
Q2ASCPU-
S1
A1SJ71AP21
/R21
Q2ASHCPU
Q2ASHCPU-
S1
Q2ACPU
AJ71AP21/
Q2ACPU-S1
R21
Q3ACPU
AJ71AP21-S3
Q4ACPU
Q02CPU
Q02HCPU
A1SJ71AP23
Q06HCPU
Q/R23Q
Q12HCPU
Q25HCPU
Table 4.1 Link modules available for the three-tier system (Continued)
Second tier
MELSEC
MELSECNET
NET
mode
mode
M L R M L
Applicable system
MELSECNET data link
MELSECNET
MELSECNET
composite
mode
mode
M L R L/m r
4 - 7
Third tier
MELSEC MELSECNET
NET composite
mode mode
L/m L/m r
Use the station number
setting switch to set the
selection of master or
local station.
• Used only for local
stations.
• Installed in an I/O slot
in an extension base
unit.
: Available
Remarks