1
：
1 topology with repeaters
・
It is the system with 1 unit of master and 1 unit of slave and repeaters between master and slave.
・
Max. 8 repeater stages are possible (between master and slave)
In serial communication, the communication protocol (serial communication protocol) of the
connected equipment is not specified.
(Except the case that communication between terminals is executed with start character ">".
Refer to the note.)
・
It is set by using setting tool.
Note: 1.When the repeater stages are increased, the communication time will be long.
Consider about the response time. And wireless unit used as a repeater
cannot connect terminal equipment.
2. When communication between terminals is executed with start character
">", it is impossible to communicate correctly, because it is identified the
command for wireless unit.Change start character by setting tool. It is
necessary to change not only master but also slaves.
■
RS485 type
Computer
PLC
Master
Max. 8 repeaters
Slave
RS232C
or RS485
Terminal equipment
(ex. Eco-POWER METER)
・
For RS485 type, wireless communication is performed only when received data communication
from the upper. (Event)
・
In the setting tool, select from the below communication protocols.
Communication protocol name in the
setting tool
Contents
[DATA] 1:1 topology with repeaters
RS485 type For 1:1 topology with repeaters
※
Initial [DATA] shows that it is for RS485 type.
■
I/O type
･
For I/O type, it always performs wireless communication from master to slaves. (Polling)
RS232C
Max 8 repeaters
Switch
Computer
Display
RS232C
Due to this, it outputs the communication error when wireless communication is cut off
continuously. (Communication error is output after about 30 sec. with no communication.)
・
For I/O type, input signal is communicated to output terminal of the same number of the
connected slave.
(Example: Input for IN1 in master is output to OUT1 in terminal in slave, not to repeaters.)
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