Honeywell Mini-AT, User Manual, Page: 46 / 156

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Page 46
Mini-AT User Guide
Level 1 Access is considered a lower level access to instrument functions and is gained through the use of a laptop
computer. Level 1 Access is a software function using the instrument's companion software Mini-AT Link (or
MasterLink32), but requires the instrument to be connected to the computers RS-232 serial port. The user must
enter a valid five digit access code at the computer's keyboard to gain software access, the default code is:
“11111”. (See Mini-AT Link SOFTWARE USER'S Guide for additional information on using Mini-AT Link
functions.)
Level 1 Access permits instrument calibration for pressure and temperature. A limited number of parameters
may be displayed and changed if authorized. Also, Audit Trail downloads, Event Log downloads, Alarm
Log Downloads and Alarms viewing and clearing are possible, if authorized. When attempting to
establish a serial link to the instrument, the software will request the user to input a five digit Instrument
Access Code. This access code is necessary to maintain instrument security. The default Instrument
Access Code is: 33333
. It is strongly recommended to change the access code at the time of installation
and there after change periodically (requires Level2 Access).
While the instrument is in Level 1 Access, the unit keeps track of incoming uncorrected pulses. Corrected
and uncorrected totals are updated when exiting Level 1 Access, using values of pressure and temperature
measured just before exiting. The pressures and temperatures applied during any calibration process are
not used for any of the correction calculations.
Note: Be sure line pressure and temperature are restored before exiting Level 1 Access, otherwise
improper correction factors will be applied to any stored input pulses.
Level 2 Access Mode
The Level 2 Access Mode allows the factory or the user to configure the Mini-AT instrument. Level 2
Access
is considered a higher level access to all instrument functions and is gained through the use of a
laptop computer. Level 2 Access is also a software function using the instrument's companion software
Mini-AT Link (or MasterLink32). The user must enter a five digit access code (default: 22222) at the
computer's keyboard. (See Mini-AT Link SOFTWARE USER'S Guide for additional information on
using Mini-AT Link functions.)
Level 2 Access permits instrument calibration and configuration. Any instrument parameter may be
displayed
and changed. When attempting to establish a serial link to the instrument, the software will
request the user to input a five digit Instrument Access Code. This access code is necessary to maintain
instrument security. The default Instrument Access Code is: 33333.
It is strongly recommended to
change the access code at the time of installation and there after change periodically (requires Level2
Access).
While the instrument is in Level 2 Access, the unit keeps track of incoming uncorrected pulses. Corrected
and
uncorrected totals are updated when exiting Level 2 Access, using values of pressure and temperature
measured just before exiting. The pressures and temperatures applied during any calibration process are
not used for any of the correction calculations or updating the LCD.
Note: Be sure line pressure and temperature are restored before exiting Level 2 Access, otherwise
improper correction factors will be applied to any stored input pulses.
Level 1 & Level 2 Access Modes permits data transfer to and from the instrument's on-board memory.
Any
RS-232 serial device can be connected to the instrument's serial port, but the serial device must be
able to communicate using Mercury's serial data protocol.
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