BT-620 Manual
Page 26
BT-620-9800 Rev B
(#4) (#5) (#6)
7.
Serial Communications
BT-620 provides serial communications via USB and DB9 connectors located on the
back of the unit. The following sections discuss the various serial communications.
ATTENTION:
The USB drivers
must
be installed before connecting the BT-620 USB port to your
computer. If the supplied drivers are not installed first, Windows may install generic
drivers that are not compatible with this product.
To install USB drivers:
Insert the Comet CD. The install program should run automatically and display the
screen below. If an AutoPlay pop-up window appears, select “Run AutoRun.exe”.
Finally, select “USB Drivers” to start the install process.
7.1.
Commands
The BT-620 provides serial commands for accessing stored data and settings. All
commands are terminated by a carriage return. Also, these commands are not case
sensitive. The following table lists the available commands. These commands are
available via USB, RS232 and RS485 hardware interfaces. The settings (baud rate,
parity and stop bits) must match the computer setting for proper communication
regardless of the hardware interface type (USB, RS232 or RS485).
7.1.1. Computer Mode
Computer Mode is intended for connecting the unit directly to a data logger or computer
program such as Comet. This is the default mode of the unit.
