Hardy HI 4050, User Manual

Page: 130 / 192

122 Chapter 6
•
•
•
•
•
•
•
HSO2 bit 1 (HO2.1) - Zero
•
HSO2 bit 2 (HO2.2) - Hard Cal Low
•
HSO2 bit 3 (HO2.3) - Hard Cal High
•
HSO2 bit 4 (HO2.4) - C2 Cal
•
HSO2 bit 5 (HO2.5) - Write Parameters to SD card
•
HSO2 bit 6 (HO2.6) - Print
•
HSO2 bit 7 (HO2.7) - Clear Tare
Analog Mapping
In an analog equation the Destination value is an analog term. The equation can have
different values in different formats, e.g. 16-bit integer, 32-bit integer, and 32-bit float. The
HI 4050 supports three analog operations. The symbols are the same as the Boolean
operations, but with different meaning.
•
Multiply. The symbol for "multiply" is '*'
•
Add. The symbol for "Add" is '+'
•
Negate. The symbol for "Negate" is '~'
Analog tables are given three-letter names as follows:
DFI,DFO,DSI,DSO,DII,DIO all refer to DeviceNet tables, where the item is a float, a short
integer, or a 32-bit integer, depending on the second letter in the table name.
•
S - 16-bit signed integer
•
F - float
•
I - 32-bit signed integer
An analog variable is addressed with the syntax below:
[tablename][offset]
The offset is an offset in words in the case of the network tables. The offsets in Hardy tables
have various predefined meanings.
When an analog equation is evaluated, all terms are converted to float. The final result is
then converted to the type of the destination.
Mixed Mapping
In an analog equation, the term on the left side of the = sign is an analog variable. In a
Boolean equation, the term on the left side is a Boolean variable. It is permissible to use
analog variables in Boolean equations and vice versa. A mixed equation is Boolean if its
left side is a Boolean term and Analog if its left side is an analog term.
A Boolean variable in an analog equation is converted to 1.0 or 0.0.
An analog variable in a Boolean equation is TRUE if it is greater than zero and FALSE if
it is less than or equal to zero.