Mitsubishi MELSEC-A Series Reference Manual page 56

4. COMPOSITION OF A THREE-TIER SYSTEM
Module Model
A1NCPUP21
A1NCPUP21-
S3
A1NCPUR21
A2NCPUP21
A2NCPUP21-
S3
A2NCPUR21
AJ71AP21/
A2NCPUP21-
R21
S1
AJ71AP21-S3
A2NCPUP21-
CPU
S4
module
with link
A2NCPUR21-
function
S1
+
A3NCPUP21
link
module
A3NCPUP21-
S3
A3NCPUR21
A2ACPUP21
A2ACPUR21
AJ71AP21/
A2ACPUP21-
R21
S1
AJ71AP21-S3
A2ACPUR21-
AJ72AP21/
S1
R21
A3ACPUP21
A3ACPUR21
A0J2P25
A0J2P25-S3
A0J2R25
Data link
module
AJ72P25
AJ72P25-S3
AJ72R25
Table 4.1 Link modules available for the three-tier system (Continued)
Second tier
MELSEC
MELSECNET
NET
mode
mode
M L R M L
*1: MELSECNET and MELSECNET
*2: MELSECNET, MELSECNET
second tier.
Applicable system
MELSECNET data link
MELSECNET
MELSECNET
composite
mode
mode
M L R L/m r
*1
*2
composite modes can be used for the second tier.
, and MELSECNET
4 - 8
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.
*2 *2
composite modes can be used for the
: Available
Remarks