Communication Style - Panasonic KR20 User Manual

1.1.2 Communication style

3 kinds of communication system are possible.
1:1 topology
・ It is the system with 1 unit of master and 1 unit of 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.)
・ Setting only the main unit can make it usable.
Note: When communication between terminals is executed with start character ">", it
■RS485 type
Computer
・ For RS485 type, wireless communication is performed only when received external data
communication. (Event)
■I/O type
Switch
・ For I/O type, it always performs wireless communication from master to slave. (Polling)
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 the output terminal of the same number of the
connected slave. (Example: Input for IN1 in master is output to OUT1 in slave, input for IN2 in
slave is output to OUT2 in master.)
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
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.
PLC
RS232C
or RS485
Master
Computer
RS232C
Slave
Wireless
communication
at any time
Drive circuit
Terminal equipment
(ex.Eco-POWER METER)
Display
RS232C
1-3