EPICURE Software Release 57.0
Cryogenic Message Application Program
JACK C. SCHMIDT
The heart of the EPICURE Cryogenic Controls System is the multibus. Any control
problems that the multibus encounters can be detrimental to cryogenic
equipment. The multibus was designed with this in mind and performs
self-checks. In the event an error is discovered, the multibus encodes the
information into TANNS (yes, dreaded TANNS) and signals the control system. The
CRYO_MSG program receives these messages, and decodes them into text strings
that are useful to the cryo operators, and the hardware and software
The CRYO_MSG program creates a VWS terminal window to display the multibus
messages. On intialization, the window size is 10 x 60 with a black
background. Window text is displayed in white. The title of the window terminal
is ` Multibus Error Messages '. The CRYO_MSG program allows the terminal window
to be popped forward, pushed behind windows, relocated anywhere on the screen,
iconized, expanded, and resized. The program will not let the user delete the
window, nor can terminal options be set. Resizing or
iconizing the window has no effect on messages being written to the screen.
The CRYO_MSG program translates TANNS sent from the multibus into messages that
consist of the time and date of the error, the multibus number, and a text
string. The text strings are taken from Lee Chapman's GAS documentation.
System and GAS messages are translated at this time.
CRYO_MSG checks for a prom download file in the RDCU_CRYO_FILES_PROMS directory
whenever a multibus is rebooted. If a file is found, settings will be performed
on the multibus as specified by the file. Messages are displayed indicating
whether a file was found, if a setting occurred or if it completed with an error
or it timed out (timeout is set for 1 minute at this time). A message is
displayed on completion of the file. Sets that do not complete or have timed
out are not retried.
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