INFICON IC/5 Thin Film Deposition Controller - Manual (Page 121)

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IC/5 Operating Manual
Chapter 6
I/O Logic Statement Set-Up
6.1 I/O Logic Statement Overview
The IC/5 has programmable logic capabilities that allow it to specifically respond to
various external stimuli (Inputs), to send control signals to external devices based
on Inputs or specific instrument conditions (Outputs) and also to internally branch
and control the execution of a process or series of processes without operator
intervention. You can tailor these capabilities by programming the logic statements.
 Programming is accessed through the I/O branch of the menu tree.
 Single or multiple actions may be triggered by Inputs or the fulfillment of a user
specified logical condition.
 Inputs are only processed when they or the statement they are used in undergo
a transition and on instrument power-up.
 Single or multiple complex defined conditions are used to define an event.
 The Logical operators; AND, OR, and NOT (negate) as well as grouping
operators (parentheses) are available to define very precise conditionality. An
additional operator, ON, specifically ties certain events together.
 It is possible to execute an action immediately or delay it for a definable period
of time through use of a timer or a counter.
 Each Logic statement is evaluated every measurement cycle of 100 ms.
 Layer, process, or material entries for each logic statement can be made
exclusive or inclusive.
 The components of the Logic statements may be the transition between or
entry of a specific state, specific programmable time limits, programmable
thickness limits or various error conditions.
 There are user defined messages which may be displayed.
 Inputs and outputs may be named on an I/O map display. Additionally on this
display, the outputs may be defined as normally open (NO) or normally closed
(NC).
 Logic statements may be chained together using the Statement ### Event.
These features, combined with layer based process sequencing, allow moderately
complex vacuum processing plants to be controlled without the addition of any
other intelligent machines. It is possible that a user may program certain layers
within the process definition whose only purpose is to trigger certain other internal