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A-28
Functions and
characteristics
Compact NSX communication
Networks and software
DB115569
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Compact NSX uses the Modbus
communication protocol, compatible with
SMS PowerLogic supervision systems.
Two downloadable utilities facilitate
implementation of communication functions.
Modbus
Modbus is the most widely used communication
protocol in industrial networks. It operates in master-
slave mode. The devices (slaves) communicate one
after the other with a gateway (master).
Masterpact, Compact NSX, PowerLogic and Sepam
products all operate with this protocol. AModbus
network is generally implemented on an LV or MV
switchboard scale.
Depending on the data monitored and the desired
refresh rate, a Modbus network connected to a
gateway can serve 4 to 16 devices. For larger
installations, a number of Modbus networks can be
connected to an Ethernet network (TCP/IP/Modbus
protocol) via their gateways.
559E1300.indd
version: 1.0