Omron C200H-ASC11, Manual, Page: 284 / 301

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Appendix D
Formats for Storing Variables in Memory
Variables are stored to memory in the following ways, depending on the variable type.
• Short Integer Variables
• Long Integer Variables
• Single-precision Real Number Variables
• Double-precision Real Number Variable
• Character String Variable
Address
15 0
MSB LSB
15 0
S D
1 bit 15 bits
S: Sign (0: positive, 1: negative)
D: Numeric value
Address
15 0
MSB
15 0
S D
1 bit 31 bits
S: Sign (0: positive, 1: negative)
D: Numeric value
LSB
Address
15 0
S
31 0
S E
1 bit 8 bits
S: Sign (0: positive, 1: negative)
E: Exponent (offset: 127)
M: Mantissa
LSB
E M
M
M
23 bits
15 0
S
63 0
S E
1 bit 11 bits
S: Sign (0: positive, 1: negative)
E: Exponent (offset: 1023)
M: Mantissa
LSB
E M
M
M
52 bits
M
M
15 0
Maximum length
•
Add empty bytes and adjust so that there will be an
even number of memory bytes for each variable.
•
The character data section not being used beyond
the current length contains undefined data.
Current length
First character
8
Second character
7
Final character