EZT-570S User Manual
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5.9.1
Barcode Reader Communication Settings
In order for the barcode reader to communicate properly with the EZT-570S, it must be set with the
proper communication settings. This includes baud rate, data bits, stop bits, parity and start/end of
transmission characters as follows:
Baud rate = 9600 baud
Data bits = 7
Stop bits = 1
Parity = even
Preamble = STX (0x02)
Postamble = ETX (0x03)
The preamble and postamble are the start of transmission and end of transmission characters that
must be used to frame the barcode transmitted to the EZT-570S so that it recognizes the beginning
and end of the transmission. All other terminator, BCC, ACK and/or handshaking characters must be
disabled. See the user manual for the barcode scanner being used for instructions on how to
configure the proper communication settings.
5.9.2
Important Notes on Barcode Reader Use
There are certain limitations of use for the barcode reader based on the mode of operation selected.
It is important that the user read and understand these to insure that the barcode reader operates as
expected.
5.9.2.1
Using the Barcode Reader to Start an Automatic Ramp/Soak Program
When using the barcode reader to start a program, the scanned barcode data must match the
ramp/soak program name exactly in order for the EZT-570S to load and prompt the user to start it.
Program names can be a maximum of 16 characters, which also matches the maximum data that the
EZT-570S will accept from the barcode scanner. However, if a prefix is also used, the overall name
( scanned data) can exceed the maximum allowed file name length for a program. If the EZT-
570S does not find an exact match, it will ignore the scan. Thus, it is up to the user to insure that a
matching program exists for each bar code that will be scanned.
If an automatic ramp soak program is already in operation, or a program download is active from a
remote PC, the EZT-570S will ignore any barcode scan made during that time. The EZT-570S will
also ignore a barcode scan if the FTP data backup is active. The user must manually stop the
currently running program or wait for the remote PC download to complete before scanning the
barcode to begin the matching program. The user also has the option of cancelling the FTP data
backup while it is in progress if necessary, in order to scan and start a program.
If the automatic FTP data backup is set to occur while an automatic program start is in progress by a
barcode scan, but the user has not yet acknowledged the request to start the program, the FTP data
backup will be skipped. The automatic FTP data backup will then occur at the next scheduled
interval. This allows the user to proceed without interruption; however, it does prevent the scheduled
backup of data. If necessary, a manual FTP backup can be performed once the program has been
started.
5.9.2.2
Using the Barcode Reader to Annotate a Data Log File
When scanning bar codes, a minimum time period of 3 seconds is required between each code
scanned. This provides the time necessary for the EZT-570S to acquire the code and insert it as an
annotation into a running log file. If multiple bar codes are scanned too quickly, the EZT-570S may
miss a scan because it is still processing the previous bar code.
Summary of Contents for EZT-570S
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