Watlow D4T Data Logger
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Chapter 2 Configuration Using Composer
Global Settings
Each of the settings below will be used and applied throughout the data logger.
• Temperature Units: will determine how the temperature is displayed (Fahrenheit or
Celsius) on the front panel of the data logger as well as throughout all configuration
screens within Composer
®
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• AC Line Frequency: set this to the line frequency of the power applied to loads such
as heaters (50 Hz or 60 Hz) so that the current sensing and variable time-base features
will work correctly.
• Date and Time: sets the date, time and time zone to the current computer settings or
whatever the user enters.
Security
The security feature is used to protect the system's configuration and settings from unwanted
changes. The Admin user sets what access other users have to the system's features. When se-
curity is enabled, a user must enter a password to gain access to protected features through
the data logger's user interface or Composer software.
There are three configurable user groups and an admin account:
• User: no password required, admin sets feature access
• User with Password: requires a password, admin sets feature access, is permitted to
change the password for this user group.
• Maintenance User: requires a password, admin sets feature access, is permitted to change
the password for this user group.
• Admin: requires a password, has unlimited access to features, sets permissions and pass-
words for all user groups.
The Admin user can set permissions for each user group to allow full, read-only or no access
to the following features:
• Home: controls access to data logger's home screen.*
• Control Mode: controls access to setting the control mode, set points and PID param-
eters.
• Autotune: controls access to running the autotune feature.
• PID Settings: controls access to the PID settings.
• Global Settings: controls access to the system's global settings, temperature units, AC
line frequency and real time clock setting.
• Network: controls access to communications settings.
• Operations: controls access to operational parameter settings.*
• Personalization: controls access to customizing the data logger's home screen.
• Data Logging Setup: determines frequency of logging, location of saved files and other
general information.
• File Transfer: allows a user to transfer files (Configuration and Data log) to/from the
data logger.
• Diagnostics and Troubleshooting: controls access to the device details and calibration.
