Campbell CR10 PROM, Руководство оператора

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SECTION 1. FUNCTIONAL MODES
1-8
The maximum size of Input and Intermediate
Storage and the minimum size of Final Storage
are determined by the size of RAM chips
installed (Table 1.5-1). Input and Intermediate
Storage are confined to the same RAM chip as
system and program memory, they cannot be
expanded onto the second chip which is always
entirely dedicated to Final Storage. A minimum
28 Input and 768 Final Storage Area 1 locations
will ALWAYS be retained. The size of
Intermediate Storage may be reduced to 0.
Intermediate Storage and Final Storage Area 1
are erased when memory is repartitioned. This
feature may be used to clear memory without
altering programming. The number of locations
does not actually need to be changed; the
same value can be keyed in and entered.
Storage Area 2 is protected when Input and/or
Intermediate Storage is reallocated, but cleared
if Storage Area 2 is reallocated.
After repartitioning memory, the program must
be recompiled. Compiling erases Intermediate
Storage. Compiling with *0 erases Input
Storage; compiling with *6 leaves Input Storage
unaltered.
If Intermediate Storage size is too small to
accommodate the programs or instructions
entered, the "E:04" ERROR CODE will be
displayed in the *0, *6, and *B Modes. The user
may remove this error code by either altering the
programs or by entering a larger value for
Intermediate Storage size. Final Storage size can
be maximized by limiting Intermediate Storage to
the minimum number of locations necessary to
accommodate the programs entered. The size of
Final Storage and the rate at which data are
stored determines how long it will take for Final
Storage to fill, at which point new data will write
over old.
The number of bytes remaining in program
memory is displayed in the fifth window.
ENTERING 1986 (the total bytes available)
COMPLETELY RESETS THE CR10. All
memory is erased and the power-up memory
check and initialization is repeated as if the
power were switched off and on again.
1.6 MEMORY TESTING AND SYSTEM
STATUS - *B
The *B Mode is used to 1) read the signature of
the program memory and the software PROM, 2)
display the size of RAM+PROM, 3) display the
number of E08 occurrences (Section 3.10), 4)
display the number of overrun occurrences
(Section 1.1.1), 5) display PROM version
number. Table 1.6-1 describes what the values
seen in the *B Mode represent. The correct
signature of the CR10 PROM is listed in
Appendix B.
A signature is a number which is a function of
the data and the sequence of data in memory.
It is derived using an algorithm which assures a
99.998% probability that if either the data or its
sequence changes, the signature changes.
The signature of the program memory is used
to determine if the program tables have been
altered. During the self check on power-up, the
signature computed for a PROM is compared
with a signature stored in the PROM to
determine if a failure has occurred. The
algorithm used to calculate the signature is
described in Appendix C.
The contents of windows 6 and 7, PROM version
and version revision, are helpful in determining what
PROM is in the datalogger. Over the years, several
different PROM versions have been released, each
with operational differences. When calling Campbell
Scientific for datalogger assistance, please have
these two numbers available.
TABLE 1.6-1. Description of *B Mode Data
Keyboard Display
Entry ID: Data Description of Data
*B 01: XXXXX Program memory Signature. The value is dependent upon the
programming entered and memory allotment. If the Tables have
not been previously compiled, they will be compiled and run.
A 02: XXXXX PROM Signature
A 03: XXXXX Memory Size 32K ROM + No. K RAM
A 04: XXXXX No. of E08 occurrences (Key in 88 to reset)
A 05: XXXXX No. of overrun occurrences (Key in 88 to reset)
A 06: X.XXXX PROM version number