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4 ASCII Data Stream via USB
ASCII Flow Data Stream via USB for Pulsite
integration.
Each meter operates whilst real-time flow readings are streamed as ASCII encoded Carriage-
Return + Line-feed terminated strings, via the USB connector. Thus, enabling easy integration
of the Pulsite
Link flow information into customer operating and monitoring systems. Each
®
ASCII line is a single number with decimal point, showing the flow rate in the configured units
and time period, (e.g. litres per minute). Scientific format is not used and the output is restricted
to six decimal places.
The flow readings are reported at approximately 10Hz and configured as the same as those
set in the meter using the
4.1 How to Enable ASCII Streaming
ASCII streaming is conveyed via the FTDI USB chip (FT232RL) and requires the FTDI driver
to be loaded on the PC being used. Windows drivers are loaded automatically with the
installation of the Titan Interface Software.
More details on the FTDI USB communications can be found at
On power up, the unit defaults to ASCII Streaming mode of flow data. This is an "output only"
and any message received by the meter will automatically switch the communication mode to
"non-streaming". For example, when the Titan Interface Software attempts connection it will
first switch the unit into "non-streaming" mode. On exiting, the software will automatically return
the connected meter into ASCII streaming mode.
NOTE: If the Titan Interface Software is not closed correctly or the meter is disconnected via
the cable prior to closing the software, the ASCII will not be enabled.
4.2 Serial Port settings for ASCII Streaming
Windows™
The Virtual COM port (VCP) driver must first be enabled for the USB Connection.
See Appendices for details on how to do this.
Linux™
The VCP driver is enabled by default.
After the serial port driver has been enabled, customer software should configure the COM
port with the following settings:
•
FTDI Baud Rate*: 1000000
•
Parity: None
•
Stop Bits: 1
•
Data Bits: 8
*NOTE: The ASCII streaming is not RS232 like data transmission. The Baud rate must be set
to the indicated value to enable the Pulsite
driver converts the USB data stream to ASCII.
A test program for Windows™, (ASCII_Test_Pulsite®_Link.exe), is included which can be used
to verify that the Pulsite
Python Script for testing on Linux™ systems.
© Titan Enterprises Ltd 2023
®
"Titan Interface
Software".
®
®
Link stream is being properly received by the PC. Also included is a
www.flowmeters.co.uk
Link, is a feature to ease customer system
®
https://ftdichip.com/
Link to communicate via USB. The FTDI VCP
Pulsite®Link_Instruction_Manual_0823
11
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