Mitsubishi Electric Melsec A Series - CHAPTER 1 INTRODUCTION; 1.1 Transition from MELSECNET (II) and;B to MELSECNET;H; 1.1.1 Transition to the Q series

INTRODUCTION
1 - 1
1
1.1.1 Transition to the Q series
To replace the MELSECNET (II) and /B system with the Q series system, replace it with the
MELSECNET/H system.
For a replacement method, refer to Section 1.1.2.
The following shows the configuration of the Q series MELSECNET/H system after the transition and
the system configuration precautions at transition for each of the MELSECNET (II) and /B system
configurations.
For details, refer to CHAPTER 2 and CHAPTER 3.
1
1 INTRODUCTION
1.1 Transition from MELSECNET (II) and /B to MELSECNET/H
Network type 2-tier/3-tier Component stations Refer to
Optical loop
2-tier system
Local station only Section 1.1.1 (1) (a)
Remote I/O station only Section 1.1.1 (1) (b)
Mixture of local station and remote I/O station Section 1.1.1 (1) (c)
3-tier system
Local station only Section 1.1.1 (1) (d)
2-tier local station, 3-tier remote I/O station Section 1.1.1 (1) (e)
Mixture of local station and remote I/O station Section 1.1.1 (1) (f)
Coaxial loop
2-tier system
Local station only Section 1.1.1 (2) (a)
Remote I/O station only Section 1.1.1 (2) (b)
Mixture of local station and remote I/O station Section 1.1.1 (2) (c)
3-tier system
Local station only Section 1.1.1 (2) (d)
2-tier local station, 3-tier remote I/O station Section 1.1.1 (2) (e)
Mixture of local station and remote I/O station Section 1.1.1 (2) (f)
Twisted pair
2-tier system
Local station only Section 1.1.1 (3) (a)
Remote I/O station only Section 1.1.1 (3) (b)
Mixture of local station and remote I/O station Section 1.1.1 (3) (c)
3-tier system
Local station only Section 1.1.1 (3) (d)
2-tier local station, 3-tier remote I/O station Section 1.1.1 (3) (e)
Mixture of local station and remote I/O station Section 1.1.1 (3) (f)