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Inputs and Outputs
SiOne Page
10
Interface RS-485
The device is equipped with RS-485 industrial interface, MODBUS RTU protocol and can only work on the network as
SLAVE
.
More information about Modbus RTU protocol can read on the Modbus Organization website (http://www.modbus.org/).
Interface connectors are marked (A, B). RS-485 baud rate and MODBUS address are configured via jumpers. Figure 4 shows a
simple scheme of connection two SiOne transmitters in one RS-48 network.
Figure 4. RS-485 - Scheme of Connection
Be care when connecting the device. Incorrect connection may damage the device and/or damage other devices that are connecting with
the device.
All connections must only be made with the power off!