
TAC Xenta Server – Gateway, Technical Manual B Protocols
Schneider Electric Buildings AB, June 2011 117 (184)
04-00124-06-en
B Protocols
B.1 Modbus Serial Line Master
The Xenta 913 can be configured to act as the sole master on a Modbus
and/or J-Bus serial network to allow monitoring and control of one or
more slave devices through an I/NET or LON control system. Both the
RTU and ASCII protocol formats are supported.
A number of Modbus Registers can be connected to a corresponding set
of LON Network Variables or I/Net Points to allow one or more Slave
devices to be monitored and controlled. The Xenta 913 can act as the
sole network Master, exchanging the required register values with the
targeted slave devices.
Fig. B.1: Modbus serial line master
Value exchange
Modbus Network
Slave Slave Slave
RS-485 A
RTU or ASCII
Modbus Master
LON or I/NET Control System
RS-485
Extender
Xenta 913
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