INFICON MDC-370 Thin Film Deposition Controller - Manual (Page 59)

MDC-370 DEPOSITION CONTROLLER
Inputs that are internally defined are discussed further in the source/sensor setup
sections. Table 8-4 lists the input pin numbers.
4.3.3.3 PROGRAM OUTPUTS
The controller has ‘logical’ discrete outputs which are used when running a
process, and ‘physical’ discrete outputs which can be associated arbitrarily by the
user with the logical outputs using the Program Outputs function. Each physical
discrete output is in the form of a pair of relay contacts assigned to dedicated pins
on a controller back-panel connector, and these contacts will close when a the
logical discrete output associated with the physical output satisfies a set of
conditions defined by the user which are evaluated every 100 ms.
The controller provides for a maximum of 16 logical outputs. The 16 logical
outputs can be associated with up to 8 physical outputs with the single I/O card
provided with the basic controller, and with up to 16 physical outputs if the
second optional I/O card is installed. Additionally, the controller has a relay
output which is dedicated to the Abort function.
Use the Main Menu, Edit System Setup, Program Outputs to display the logical
outputs, and the Up-arrow and Down-arrow keys to select the logical output.
A logical output (01 to 16) can be given a 16-digit name, and can be associated
with a physical output by identifying the I/O card (1 or 2) and connector pin
number (2 to 9, paired with 21 to 28, respectively, for the relay contacts).
The logical discrete outputs have two categories. One category contains logical
outputs that are named and assigned by the user, the other category contains
logical outputs that are automatically defined by the controller, such as those
required for source and sensor rotator controls, and these cannot be changed by
the user. These internally defined outputs are indicated by a condition string
labeled “Internally Defined”
When the controller defines outputs, it selects the blank names remaining in the
logical output list and assigns them in sequence to the internally generated
functions. For this reason, it is important that unused outputs are left blank, and
that there are sufficient outputs for all required functions. Outputs that are
internally defined are discussed further in the source/sensor setup sections.
Table 8-4 lists the output pin numbers.
Input Input Name True Card Pin-Ret
1 >External Start < Low 1 30 12
2 Deposit pressure High 1 31 13
3 Over Pressure
Low 1 32 14
4 Optical Monitor Low 1 33 15
5 Low 1 34 16
6 Low 1 35 17
7 Low 1 36 18
↓
PROGRAMMING AND CONTROLLER SETUP 4-27