Varec TankGate Interface 8315 Series - Manual (Page 32)

Software Description Tank Gate Interface
22 Installation and Operations Manual
The user-related parameters are the Config, Command and Dynamic parameters. These
parameters are available in the Edit Point window of ViewRTU. The remaining parameters are
internal to the Software Block.
Note ViewRTU inserts default values for the Config parameters when the point is first
defined. It is usually only necessary to fill in a few configuration parameters, such as chan-
nel numbers, to configure references and to configure links to other points.
Parameter Data Formats
Data is stored in the Tank Gate Interface as one of the following formats:
Common Parameters
The following parameters are found in almost all point types. These parameters are described
below:
Command Output command data
Constant Weights & Measures parameter
Scratch Temporary data that is typically hidden from the user
System System data (should not be changed by the user)
Data Format Description
Byte 8-bit value (-127 to 128)
Unsigned Byte 8-bit value (0 to 255)
Coded Unsigned Integer representing a digital state such as ‘On,’ ‘Off,’
‘Open,’ ‘Closed,’ etc.
Integer 16-bit value (-32766 to 32767)
Unsigned Integer 16-bit value (0 to 65535)
IEEE floating point 32-bit value with mantissa and exponent
Time Unsigned Long Integer representing the number of milliseconds since
Jan. 1, 1970.
Tag ASCII character strings, variable in length. Used for Tag and Description
parameters
Point Reference Reference to a point parameter. Format is TYPE.NUMBER.PARAM where
TYPE is AI, DI, DO, etc.
NUMBER is point number, 0-255
PARAM is the parameter of interest, such as Value or Command.
example: AI.00.Value
Unsigned Long Integer 32-bit value (0 to 4,294,967,295)
Pointer 32-bit value representing a pointer to another parameter or memory
location.
Long Integer 32-bit value
Integer (Hex format) Integer in Hex (0x0000 to 0xFFFF)
Time HH:MM:SS Unsigned Long Integer representing the number of milliseconds since
midnight.
Time MM/DD/YY Unsigned Long Integer representing the number of milliseconds since
Jan. 1, 1970.
Unsigned Long Integer (Hex
format)
Unsigned Long Integer in Hex (0x00000000 to 0xFFFFFFFF)
Parameter Class Description