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2-1
SECTION 2. INTERNAL DATA STORAGE
2.1 FINAL STORAGE AREAS, OUTPUT
ARRAYS, AND MEMORY POINTERS
Final Storage is the memory where final
processed data are stored. Final Storage data
are transferred to your computer or external
storage peripheral.
The size of Final Storage is expressed in terms of
memory locations or bytes. A low resolution data
point (4 decimal characters) occupies one
memory location (2 bytes), whereas a high
resolution data point (5 decimal characters)
requires two memory locations (4 bytes). Table
1.5-1 shows the default allocation of memory
locations to Program, Input, Intermediate, and the
two Final Storage areas. The
A
Mode is
used to reallocate memory or erase Final Storage
(Section 1.5).
The default size of Final Storage with standard
memory is 586,568 low resolution memory
locations.
Final Storage can be divided into two parts:
Final Storage Area 1 and Final Storage Area 2.
Final Storage Area 1 is the default storage area
and the only one used if the operator does not
specifically allocate memory to Area 2.
Two Final Storage Areas may be used to:
1.
Output different data to different devices.
2.
Separate archive data from real time display
data. In other words, you can record a short
time history of real time data and separately
record long term, archive data.
3.
Record both high speed data (fast recording
interval) and slow data without having the
high speed data write over the slow data.
Each Final Storage Area can be represented as
ring memory (Figure 2.1-1) on which the newest
data are written over the oldest data.
The Data Storage Pointer (DSP) is used to
determine where to store each new data point in
the Final Storage area. The DSP advances to
the next available memory location after each
new data point is stored.
FIGURE 2.1-1. Ring Memory Representation of Final Data Storage
Summary of Contents for CR23X
Page 8: ...CR23X TABLE OF CONTENTS vi This is a blank page ...
Page 12: ...CR23X MICROLOGGER OVERVIEW OV 2 1 2 3 A 4 5 6 B 7 8 9 C 0 D FIGURE OV1 1 CR23X Micrologger ...
Page 34: ...CR23X MICROLOGGER OVERVIEW OV 24 This is a blank page ...
Page 50: ...SECTION 1 FUNCTIONAL MODES 1 16 This is a blank page ...
Page 72: ...SECTION 4 EXTERNAL STORAGE PERIPHERALS 4 8 This is a blank page ...
Page 88: ...SECTION 6 9 PIN SERIAL INPUT OUTPUT 6 10 This is a blank page ...
Page 110: ...SECTION 7 MEASUREMENT PROGRAMMING EXAMPLES 7 22 This is a blank page ...
Page 134: ...SECTION 8 PROCESSING AND PROGRAM CONTROL EXAMPLES 8 24 This is a blank page ...
Page 164: ...SECTION 9 INPUT OUTPUT INSTRUCTIONS 9 30 This is a blankpage ...
Page 188: ...SECTION 11 OUTPUT PROCESSING INSTRUCTIONS 11 8 This is a blankp age ...
Page 221: ...SECTION 13 CR23X MEASUREMENTS 13 21 FIGURE 13 5 1 Circuits Used with Instructions 4 9 ...
Page 229: ...14 3 1 2 3 A 4 5 6 B 7 8 9 C 0 D FIGURE 14 3 1 CR23X Battery Pack and Panel ...
Page 240: ...SECTION 14 INSTALLATION AND MAINTENANCE 14 14 This is a blank page ...
Page 244: ...APPENDIX A GLOSSARY A 4 This is a blank page ...
Page 268: ...APPENDIX B CONTROL PORT SERIAL I O INSTRUCTION 15 B 24 This is a blank page ...
Page 276: ...APPENDIX C BINARY TELECOMMUNICATIONS C 8 This is a blank page ...
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Page 282: ...APPENDIX F DYNAGAGE SAP FLOW P67 F 4 This is a blank page ...
Page 299: ...APPENDIX I TD OPERATING SYSTEM ADDENDUM FOR CR510 CR10X AND CR23X MANUALS ...
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Page 308: ...TABLE DATA ADDENDUM AD 6 This is a blank page ...
Page 324: ...TD ADDENDUM SECTION 1 FUNCTIONAL MODES AD 1 8 This is a blank page ...
Page 340: ...TD ADDENDUM SECTION 8 PROCESSING AND PROGRAM CONTROL EXAMPLES AD 8 10 This is a blank page ...
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