DA-PU100 Series Administrator's Manual
55
4.4.3.2
When 485-Master is connected to PLC-Terminal
· Since the connection destination of the 485-Master is arbitrary, it can also be connected to a
PLC-Terminal
However, the performance is lower than when connected to a PLC-Master.
· From the PLC to which 485-Master is connected, transfer the command by unicast to each
PLC-Terminal to which 485-Slave is connected.
· Response to PLC to which 485-Master is connected from PLC-Terminal is transferred with unicast.
· When received by 485-Master, PLC-Terminal transfers the command by unicast to each
PLC-Terminal to which 485-Slave is connected. However, it excludes the source PLC-Terminal
from which the response is sent.
Specific case: 485-Master 2 communicates with 485-Slave 3
1) 485-Master 2 sends a command to 485-Slave 3
2) PLC-Master (485-Slave 1) and PLC-Terminal (485 Command transfer to 485-Slave 3)
3) 485-Slave 3 sends a response to 485-Master 2
4) Response transfer from PLC-Terminal 3 to PLC-Terminal 2 by unicast (multi-hop processing
, The response goes through the PLC-Master once)
5) PLC-Terminal 2 transfers command to PLC-Terminal (485 - Slave 1/4) with unicast
6) 485-Master 2 receives the response
Power Line
PLC
Master
①
PLC
Terminal
④
PLC
Terminal
②
PLC
Terminal
③
485
Slave
①
485
Master
②
485
Slave
③
485
Slave
④
RS-485
RS-485
RS-485
RS-485
PLC
Terminal
⑤
Summary of Contents for HD-PLC DA-PU100
Page 1: ...Administrator s Manual PLC Adaptor Model No DA PU100 ...
Page 4: ...DA PU100 Series Administrator s Manual 4 Chapter 1 Introduction ...
Page 9: ...DA PU100 Series Administrator s Manual 9 Chapter 2 Installation and Operation ...
Page 25: ...DA PU100 Series Administrator s Manual 25 Chapter 3 PC Tools ...
Page 32: ...DA PU100 Series Administrator s Manual 32 Chapter 4 Preparation for Operation ...
Page 58: ...DA PU100 Series Administrator s Manual 58 Chapter 5 Troubleshooting ...
Page 62: ...DA PU100 Series Administrator s Manual 62 Chapter 6 Specifications ...
Page 65: ...DA PU100 Series Administrator s Manual 65 7 Dimensions With the fixing brackets attached ...