Hardware manual

Chapter 2 Connection to a PLC
2-42
RS-232C
(Connection
Diagram 2-3)
A2US，
A2USH-S1
A1SJ71C24-R2
A1SJ71UC24-R2
A1SJ71C24-R4
A1SJ71UC24-R2
RS-485 (422)-4
(Connection
Diagram 2-2)
A2N Not required
(Connects to CPU
unit)
RS-485 (422)-4
(Connection
Diagram 2-4)
None MELSEC-An
N (CPU)
A1SJH
A1SH
, A2SH,
A2C, A0J2H
Not required
(Connects to CPU
unit)
RS-485 (422)-4
(Connection
Diagram 2-4)
None MELSEC-A1S
/A2C(CPU)
A2A, A3A, A2US,
A2USH
Not required
(Connects to CPU
unit)
RS-485 (422)-4
(Connection
Diagram 2-4)
None MELSEC-AnA
(CPU)
A2U, A2USH-S1 Not required
(Connects to CPU
unit)
RS-485 (422)-4
(Connection
Diagram 2-4)
None MELSEC-An
U (CPU)
* We tested with the PLC of underline part.