4. Communications
The Serinus has a number of different interfaces for communication with other equipment (RS232,
USB, 25 pin digital/analog input/output, TCP/IP network (optional) and Bluetooth). A demonstration
version of Ecotech’s ‘Airodis’ software is included with the instrument, enabling basic data
downloads and remote operation from a PC running MS Windows (7 or 8). The full version of Airodis
is available separately, and includes automated collection, data validation, and complex reporting by
multiple users. Refer to the Airodis Manual for details on setting up and communicating with the
Serinus.
Figure 9 – Communication ports
4.1 RS232 Communication
RS232 communication is a very reliable way to access data from the instrument, and is
recommended for use in connection to a data logger for 24/7 communication. Both RS232 ports are
configured as DCE, and can be connected to DTE (Data Terminal Equipment such as a data logger or
computer). Port #2 also supports a multi-drop arrangement (a configuration of multiple analysers
connected via the same RS232 cable where the transmit signal is only asserted by the instrument
that is spoken to). Verify that the “Multi-drop ID” is set to either 0 (for direct connection) or a unique
value which is different to the other analysers in the chain for a multi-drop configuration (refer to
Section 3.5.23).
The Serinus supports the following protocols (only one per port, user selectable):
Advanced protocol (Appendix A)
EC9800 protocol (Appendix B)
Bavarian protocol (Appendix C)
Modbus protocol (Appendix D)
4.2 USB Communication
This is ideal for irregular connection to a laptop running Ecotech’s Airodis software to download
logged data and remotely control the instrument. Due to the nature of USB, this is a less reliable
permanent connection as external electrical noise can cause “USB disconnection” errors on a data
logger.
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