INFICON IC6 Thin Film Deposition Controller - Manual (Page 149)

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IC6 Operating Manual
Chapter 9
Logic Statement Setup
9.1 Logic Statement Overview
The IC6 programmable logic capabilities allow it to respond to digital external
inputs to control the execution of a process or series of processes without operator
intervention. You can tailor these capabilities by programming the logic statements.
A logic statement consists of an IF part and a THEN part. The IF part consists of
one or more conditional events selected from a table. These IF events can be
based on external inputs or internal process states or a combination of both. The
THEN part similarly consists of one or more actions selected from another table.
When the event string is determined to be true, the associated actions are
executed in left to right order. The state of the Logic statement is indicated on the
Logic Overview display and on logic statement group pages. The color of the logic
statement number will turn green to indicate the IF portion of the statement is true.
Also, three stars (***) will be present. The expressions are evaluated in numerical
sequence starting with logic statement 1.
 Programming is accessed by moving the cursor to the Logic heading of the
main menu and pressing MENU.
 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 IC6 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, but
evaluation is suspended while a configuration file is being loaded.
 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.