Setup guide

Setting up the Host to Reference the I/O Rack
26
Pin Name
Defines a name identifying this pin. IMPORTANT: This name is used
as a variable name in your POU to reference the I/O pin.
Zero
Defines the lowest value of the range for this I/O pin. Used to scale the
input/output value.
Span
Span is added to the ZERO value to define the highest value of the
range for this I/O pin. Used to scale the input/output value.
Add Over Range
Status
Set Actual Output
Value
When selected, will cause a variable to be created to store the value of
the overrange status bit. Over range conditions occur when an attempt
is made to drive the variable associated with this pin outside the range
defined by the zero and span. When this occurs, the over range status
bit will be set to TRUE.
When selected, this will cause a variable to be created which displays
the actual value which was written to the output pin. (AO ONLY)
Add Board Status
When selected, will cause a variable to be created to store board status
information.
Add Last Operation
Status
When selected, will cause a variable to be created to store the status of
the last conversion operation information.
Value
Defines the initial value for this output pin, in floating point format.
(AO ONLY)
Mark All Pins Used
When checked, will activate all pins on this I/O board. They will all
appear in RED.
Configure Hold
Values
When checked, enables other fields on the page for configuring a hold
value for this pin. A hold value is the value used by the I/O card if it
detects a watchdog of the CPU. The I/O board maintains this value at
the pin until the unit is reset. (AO ONLY)
Update Default
Value
When checked, allows the "User Configured Output" hold value to
be changed on-line; otherwise the hold value can only be set in the I/O
Configurator. (AO ONLY)
Hold Last Output
When checked, specifies that during a watchdog failure, the hold value
for this pin will be whatever value was on the pin when the failure
occurred. NOTE: "Hold Last Output" and "User Configured
Output" are mutually exclusive. Either one may be configured for a
particular pin, but NOT both. (AO ONLY)