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LINK TechBox/TechCard Instruction Manual - HA470016 Issue 5
Ordinal Writer Function Block
From the
Block/Techbox
menu select Ordinal Writer. Drag and place it towards the right edge of
your sheet.
Double-click on it and select settings, as shown below.
•
Select the tag number associated with the parameter to be written to. This may be found under
“Specification Table – Tag Number Order” in the drive instruction manual.
•
If necessary, a preset value may be entered into the Preset field. Remember that this value will
be overwritten when a new value comes over the input connection of the function block.
Value Reader Function Blocks
From the
Block/Techbox
menu select any Value reader. Drag and place it towards the left edge of
your sheet.
Double-click on it and select settings, as shown below.
•
Select the tag number associated with the parameter to be read. This may be found under
“Specification Table – Tag Number Order” in the drive instruction manual.
•
Poll period should be set to a realistic value, fast enough to be read continuously, yet not so
fast, that it overloads the processor. Reads are typically recommended at 200 ms.
•
Click the output terminal and drag it to the next
LINK
block in the configuration.
H I N T: There are different value reader function blocks that can be selected, depending on the inherent
scaling of the signal. For example, to read a generic parameter, pick the Value Reader 100
function block, which yields a 100% scaling equal to a full scale “1” in LINK. For a speed
feedback signal, pick the Value Reader 120 function block, which yields a 120% scaling equal to a
full scale “1” in LINK. Similarly, for a current feedback signal where 200% current equals a “1”
in LINK, pick Value Reader 200.
Input terminal
Output terminal
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