Fluid Components International LLC
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10 Doc. No. 06EN003367 Rev. E
ST50 Mass Flow Meter
Setup Interface
All parameters on this meter are set through the RS232 interface connection (modular jack P3). The RS232 interface allows the instru-
ment to be set up with either an FC88 hand held communicator or a computer. The FC88 is powered through the meter and comes with
the serial interface cable. If a computer interface is used, an adapter (RJ to 9-pin PC serial port) is required. The adapter can be obtained
from FCI: Part No. 014108-02.
Using a serial comm/terminal program (e.g., HyperTerminal, TeraTerm, Putty, etc.) configure the PC’s serial port (the one intended to be
connected to the instrument) as listed below.
COM Port Number: Number of COM port connected to instrument (COM1, COM2, etc.)
Baud Rate: 9600
Number of Bits:8
Stop Bits:1
Parity: None
Flow Control: None
Terminal Emulation: VT100
After configuring the serial port (and making the PC-to-instrument connections) start a communications session with the applicable
serial port. Enter any of the meter’s single letter commands in the program’s terminal window to execute a function. See “Table 5. ST50
List of Single Letter Commands” on page 25 (Appendix B) for the complete command list.
An additional command line interface (CLI) is available through the RS232 port. This interface is accessed with the “Y” command
using a computer or FC88. The command line password is “357”. See Table 6 in Appendix B for command line details.
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