10
CJ-series Features Section 1-2
Table Data Processing Instructions
Stack Instructions
A region of I/O memory can be defined as a stack region. Words in the stack
are specified by a stack pointer for easy FIFO (first-in first-out) or LIFO (last-in
first-out) data processing.
Range Instructions
These instructions operate on a specified range of words to find the maximum
value or minimum value, search for a particular value, calculate the sum or
FCS, or swap the contents of the leftmost and rightmost bytes in the words.
Record-table Instructions
Record-table instructions operate on specially defined data tables. The record
table must be defined in advance with DIM(631), which declares the number
of words in a record and the number of records in the table. Up to 16 record
tables can be defined.
Record tables are useful when data is organized in records. As an example, if
temperatures, pressures, or other set values for various models have been
combined into a table, the record-table format makes it easy to store and read
the set values for each model.
The SETR(635) can be used to store the first address of the desired record in
an Index Register. Index Registers can then be used to simplify complicated
processes such as changing the order of records in the record table, search-
ing for data, or comparing data.
Troubleshooting Functions
Failure Diagnosis:
FAL(006) and FALS(007)
The FAL(006) and FALS(007) can be used to generate a non-fatal or fatal
error when the user-defined conditions are met. Records of these errors are
stored in the error log just like system-generated errors.
Pointer
Stack region
Data
Search, find maximum,
find minimum, etc.
Range specified
in the instruction
Record 2
Table
Record 3
Record 2
Set values for model A
Temperature setting
Pressure setting
Time setting
User-defined
error condition
FAL(006) or FALS(007) error
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