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ADC-16 USER GUIDE
6.6 GLOSSARY OF CALL TERMS
Frame
A Frame is a boardconfiguration template for a particular operation; it contains all the parameter
information needed to configure the board for that operation. For example, an Analog-to-Digital
(A/D) Frame contains parameters for configuring a board to perform an A/D acquisition. A/D
Frame parameters include the channel(s) to scan, the gain code, the buffer location for acquired data,
and the code for determining whether the acquisition is to be Interrupt driven, etc. A/D operations,
Digital Output (DO) operations, etc. each require a separate Frame.
Logical Device
A Device is a grouping of several frames. Thus, a Device may include an A/D Frame, a Digital Input
Frame, a Digital Output Frame, etc. If a Device also contains all the fundamental configuration data
(Base Address, Interrupt Level, etc.) for a particular board,
it
is unique to that board and is therefore a
Logical Device.
Device Handle
A Device Handle is an identifier for a Logical Device. Each board in a system is assigned its own
Device Handle. To obtain a Device Handle for a particular board, use ADC16GetDevHandle with
the board's physical ID number. This Call returns a Device Handle unique to that board and its
Device.
Frame Handle
Once a Logical Device has a Device Handle, you may
specify
a Frame by a Frame Handle.
A
Frame
Handle is an identifier for a particular Frame and is acquired using KGetxxFrame (the xx specifies
AD or DO) for A/D input or Digital Output frames.
Memory Handle
A Memory Handle identifies a block of memory assigned for a Frame. Calls that operate on memory
require a Memory Handle to designate the particular block of memory to be affected.
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