DA-PU100 Series Administrator's Manual
54
4.4.3
Transfer of RS-485 data among HD-PLCs
4.4.3.1
When 485-Master is connected to PLC-Master
· Maximum performance can be obtained when 485-Master is connected to PLC-Master.
· From the PLC, to which 485-Master is connected, transfer the command by unicast to each
PLC-Terminal which 485-Slave is connected.
· The response to the PLC, to which 485-Master is connected from PLC-Terminal is also
transferred with unicast.
· When received by 485-Master, PLC-Master 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 1 communicates with 485-Slave 3
1) 485-Master 1 sends a command to 485-Slave 3
2) Command transfer from PLC-Master to PLC-Terminal (485-Slave 2/3/4) with unicast
3) 485-Slave 3 sends a response to 485-Master 1
4) Response transfer from PLC-Terminal 3 to PLC-Master 1 with unicast
5) Command transfer to PLC-Terminal (485-Slave 2/4) by PLC-Master 1 with unicast
6) 485-Master 1 receives the response
Power Line
PLC
Master
①
PLC
Terminal
④
PLC
Terminal
②
PLC
Terminal
③
485
Master
①
485
Slave
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 ...