Rievtech PR-12 Series, User Manual And Programmers Manual

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9.Easy ladder communication
9.1 PR series PLC basic introduction of network
communication
PR series PLC is designed to solve your communications and networking needs.It
supports both simple networks and complex networks .Easy ladder makes it simple
to set up and configure your network .
Master slave network definition
PR series PLC supports master slave network.It can be used as the master station or
the slave station in the network.Easy ladder is always used as the master station.
Master station:The master station can send a request to another device in the
network.The master station can also respond to requests from other master stations
in the network.
Slave station:The device which is configured to be the slave station can only respond
to requests from a master station;Slave station will not take the initiative to issue a
request.
The concept of baud rate and network address
The speed of transmission of data in the network is called the baud rate.Units are
kbaud and Mbaud.For example, 19.2 kbaud indicates that 19200 bits are transmitted
per second.
Each device must be the same baud rate in the network.So the communication speed
of the network is decided by the minimum baud rate of equipment.
The range of PR series PLC baud rate is 1200 bps~115200 bps.The default value is
9600bps.
Network address is a unique number that you specify for each device on the network.
Network address ensures that data is delivered to the correct device.The range of PR
series PLC network addresses is 0~255.If PLC has two ports, each port can have a
network address.
Set the baud rate and network address of EASY Ladder
Open the communication in project management: