Software
Manual SCA-340 / SCA-340-L sysmik.de 41
4.5.2 Serial Interfaces
The Scalibur has two serial RS-485 interfaces, that are available as COM1 and
COM2 for any serial protocols. All relevant baud rates equal or above 200 baud are
supported.
Further serial interfaces can be added via IO terminals. Universal serial terminals of
type IB IL RS UNI support the interface types RS-232, RS-485, and RS-422, which
can be configured with Workbench via their associated terminal component in
SysmikScaNetwork. IB IL RS 232-ECO and IB IL RS 485-ECO support serial
interfaces types regarding their names. The serial interfaces of the IO terminals can
be used as master for serial protocols except BACnet MS/TP. The supported baud
rates are documented in the data sheets of the terminals.
Terminals of type IB IL MBUS extend the Scalibur by serial interfaces according to
the M-Bus standard for connection of up to 30 M-Bus slaves and are controlled with
the Niagara M-Bus driver.
The interface names of the serial terminals are assigned according to their position,
starting with COM3.
A summary of all serial interfaces, including their current use (owner) is available at
Station/Config/Services/PlatformServices/SerialPortPlatformServiceNpsdk.
Example:
The screenshot shows an overview for a Scalibur controller with 4 serial ports total –
two from the controller itself and two added via serial terminals:
COM1: The first built-in RS-485 interface is used by the MS/TP port of the
BacnetNetwork.
COM2: The second built-in RS-485 interface is assigned to the
ModbusSlaveNetwork.
COM3: The IB IL MBUS terminal at Inline position 7 is used as interface for
the MbusNetwork.
COM4: The IB IL RS UNI terminal at Inline position is used by the
ModbusAsyncNetwork. To this end the property RsType of the terminals
PropertySheet in SysmikScaNetwork is set to RS-485.
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