Table of Contents
Advertisement
Not Ready –analog output (standard factory setting: 2mA) of self-diagnostic test
Field Calibrate
Calibrate Sensor – Field Calibration procedure
Clear Field Cal - restores the instrument to the last factory calibration
Exit – exit Configuration Menu to standard display output setting
8
SERIAL COMMUNICATION
The user can monitor and control the unit via serial communication via the serial interface.
8.1
SOFTWARE
Software that communicates over the serial port is typically called a "terminal emulator". Any two-
way terminal emulators (HyperTerminal, Telnet, etc.) or purpose-built software (using LabView,
Visual Basic, C++, etc.) can be used to establish serial communication with the unit.
XP and previous versions of Windows came with a terminal emulator called "Hyper Terminal".
Newer versions of Windows do not. These versions require installing a third-party program. There
are many inexpensive or free programs available. FoxTerm, a free program, is used extensively by
H2scan.
8.2
CONNECTION
Connect the sensor to the serial port, using whatever barriers and adapters are required.
If a USB adapter is used, install the driver according to its instructions.
In Windows, look at the ports using the Device Manger.
A built-in port will be "COM1".
The port assigned to the USB adapter could have any number, but it will be called something like
"USB Serial Port (COM7)" or "I-756X (COM3)". Below is an example.
Note the port number that Windows has assigned.
8.3
FORMAT AND SETTINGS
RS232 (RS422 optional)
19200 Baud
8 bit data
1 stop bit
No parity
No Handshaking
8.4
COMMAND LEVELS
The unit can be communicated with and configured via the use of commands as described below.
Two levels of communication outputs are available:
Level 0 – Default level used for data monitoring and basic functions providing a continuous
stream of data readings
90000012 R8
HY-ALERTA™ 1600, Intrinsically Safe Area Hydrogen Monitor
OPERATING MANUAL
Page 12 of 31
Advertisement
Table of Contents
