1) It could use LX3V-ETH-BD to add Ethernet communication ports. 

It is internally installed in the top of PLC, thus it is not necessary to change the PLC’s installation area;

2) Maximum number of connections 8, regardless of master and slave;

3) The current protocol only supports: MODBUS-TCP.

POW: power light, normal state is always bright when connected

COM: the flicker frequency corresponds to communication with plc

DATA: data light blinks if the communication with network is normal

LINK: when connect to the network then the light is lit, if the connect is abnormal,

there will be exterminated or chaotic situation