Mitsubishi MELSEC-A Series Reference Manual page 66

4. COMPOSITION OF A THREE-TIER SYSTEM
Module Model
A2UCPU
+AJ71AP21
(S3)
A2UCPU
+AJ71AR21
A2UCPU-S1
+AJ71AP21
(S3)
A2UCPU-S1
+AJ71AR21
A3UCPU
+AJ71AP21
(S3)
A3UCPU
+AJ71AR21
A4UCPU
+AJ71AP21
(S3)
CPU
A4UCPU
module
+AJ71AR21
+
AJ71AT21B
link
Q2ACPU
modules
+AJ71AP21
(two)
(S3)
Q2ACPU
+AJ71AR21
Q2ACPU-S1
+AJ71AP21
(S3)
Q2ACPU-S1
+AJ71AR21
Q3ACPU
+AJ71AP21
(S3)
Q3ACPU
+AJ71AR21
Q4ACPU
+AJ71AP21
(S3)
Q4ACPU
+AJ71AR21
Table 4.2 Link modules available for the three-tier system (Continued)
MELSECNET data link
Second tier
MELSEC
MELSECNET
NET
mode
mode
M L R M L
*1: MELSECNET and MELSECNET
Applicable system
MELSECNET/B data link
MELSECNET
MELSECNET
composite
mode
mode
M L R L/m r
*1
composite modes can be used for the second tier.
4 - 18
Third tier
MELSEC MELSECNET
NET composite
mode mode
L/m L/m r
Use the station number
*1 *1
setting switch to set the
selection of master or
local station.
: Available
Remarks