Watlow D4T Data Logger
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Chapter 1 Overview
Outputs
Outputs respond to information provided by a function such as, driving a digital output to turn
a light on or off, unlocking a furnace door or turning on a buzzer.
More than one output can be assigned to respond to any given function, i.e., more than one
output device could be connected to the heat output of the control block. Another example
(not shown), could use the (internal) output of the alarm function and connect it to any avail-
able real-world output to trigger a flashing light and another real-world output that might be
connected to a siren.
Data Logging
Data loggers will have the letter [J, K, L or M] in the fifth character of its part number (see:
D4T Ordering Information). Logging can be enabled at any time and is intended to capture
real-time data for a user selectable list of data points. With firmware revision 3.0 and above,
several new features are available.
1. User can determine if logged files will be moved automatically and or manually.
2. Destination of the saved file can be directed to internal memory, USB thumb drive, TFTP
server or a Samba shared drive.
3. Based on user choice, files can now be encrypted (filename.enc) for security purposes and
or saved as comma separated values (filename.csv). Creating both file types allows viewing
of the csv file while maintaining the integrity of the encrypted file.
To learn more about configuring these options see the section in this user's guide entitled
ting Up Data Log Files Using Composer
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