Easy Electronics xLogic Micro PLC User Manual page 14

It is called Ethernet module, used to connect xLogic main modules in different places to enormous
Ethernet to buildup a huge monitoring and control system. It contains DC and AC two types.
xLogic:SMS module（Model：ELC-SMS-D-R）
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ELC-SMS-D-R is kind of SMS module, through which SMS can be regarded as expansion input by user
to realize wireless remote control and it can send alarm messages to user cell phones.
Communication / Network
xLogic offers different ways to communicate within the system.
RS485 port (RS485 communication module needed)
The RS485 port is used for communication between the CPU and various devices or equipments which
have the standard RS485 port. Communicate using Modbus RTU/ASCII protocol.
RS232 or USB port (ELC-ES232/ ELC-USB needed)
If there is no network required and only one main module with some expansion modules is needed for the
application, the down- and upload of the project to and from the main module happens over the standard
RS232 or USB port. It allows system maintenance like monitoring too.
Ethernet network
If the application requires a system where more than one main module is needed and these main
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