Rievtech xLogic ELC Series User Manual page 14

xLogic offers different ways to communicate within the system.
RS485 port
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.
Note：PR-RS485 module is required to connect the CPU to RS485 BUS.
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.
Note：PR-E-RS485 module is required to connect the CPU to RS485 BUS.
Ethernet network
If the application requires a system where more than one main module is needed and these main
modules have to communicate, each Ethernet CPU will be connected directly to the Ethernet by the
built-in LAN port. The project down- and upload to and from the main modules and the communication
between the CPU happens over the Ethernet network. Furthermore the our free of charge SCADA can be
also established connection with Ethernet CPU
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