INFICON BCG450-SP ATM to Ultra-High Vacuum Triple Gauge (Profibus) - Manual (Page 42)

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tira41e1 (2005-06) BCG450SPv1.cp
Appendix A: Definitions
Abbreviation Range Data type
INT8 -2
7
… (2
7
- 1) Integer 1 byte
INT16 -2
15
… (2
15
- 1) Integer 2 byte
INT32 -2
31
… (2
31
- 1) Integer 4 byte
UINT8 0 … (2
8
- 1) Unsigned integer 1 byte
UINT16 0 … (2 16 - 1) Unsigned integer 2 byte
UINT32 0 … (2
31
- 1) Unsigned integer 4 byte
FLOAT ±3.402×10 38 Floating Point, IEEE 754 Short Real Number,
4 byte
VSTRING(n) ISO 646 and ISO 2375
OSTRING(n) Octet string
Term Meaning
Byte Number of bytes used by a data structure (integer value)
Store This parameter defines whether the values are stored in non-
volatile memory (
→ store characteristics)
Default Manufacturer-defined value
Abbreviation Meaning
V "Volatile": Value is not saved to the RAM or EEPROM and is lost
in the event of a power failure
N "Nonvolatile": Value is saved to the RAM or EEPROM and is not
lost in the event of a power failure
Abbreviation Meaning
1_R/W Acyclically readable and writeable by a Master Class 1
2_R/W Acyclically readable and writeable by a Master Class 2
1/2_R/W Acyclically readable and writeable by a Master Class 1 and 2
1_R Acyclically readable by a master Class 1
2_R Acyclically readable by a master Class 2
1/2_R Acyclically readable by a master Class 1 and 2
1_W Acyclically writeable by a master Class 1
2_W Acyclically writeable by a master Class 2
1/2_W Acyclically writeable by a master Class 1 and 2
0_XI Cyclic output data with master Class 1
Data types
Definitions
Store characteristics
Data access