Serial Output

The SMART System can output system status information and pass-level measurements of bat call parameters via its two serial ports.

Serial Port Specifications

The SMART Controller has two male, DB-9 serial ports that support RS-232, RS-422, or RS-485 protocols. By default, both ports are configured for RS-232.

Both ports are DTE ports. To connect one of the SMART Controller's serial ports to another device with a DTE serial port, such as another computer, you should use a null modem female-to-female cross-over cable or adapter.

Figure 1. Serial Port Pin Arrangement
With the longer edge of the DB-9 port on the bottom, pin 1 is at the lower-right corner, pin 5 is at the lower-left corner, pin 6 is at the upper-right corner, and pin 9 is at the upper-left corner.
Pin RS-232 RS-422 RS-485
1 DCD TX- TX-/RX-
2 RX TX+ TX+/RX+
3 TX RX+ NC
4 DTR RX- NC
5 GND GND GND
6 DSR NC NC
7 RTS NC NC
8 CTS NC NC
9 RI NC NC

NC = Not Connected

Serial Messages

Two types of serial messages can be generated:

Event Messages
Event messages are output each time a triggered recording is completed and the results.csv file is updated. These messages can contain an optional text string and any selected fields from the results.csv file, with the exception of the species ID field.
Poll Messages
Poll messages are output at regular intervals. These contain an optional text string and status information about the SMART System.