INFICON SQM-242 Thin Film Deposition Controller Card Operating Manual - Manual (Page 47)

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SQM-242 Operating Manual
Chapter 6
Communications
6.1 Introduction
The diagram below illustrates basic concepts for interfacing to the SQM-242 card.
Figure 6-1 Communications Diagram
Communications with the SQM-242 card are through a 32 bit DLL, SQM242a.DLL,
placed in the Windows system directory. This is a standard DLL, which does not
require registration.
A description of each DLL function is listed later in this Chapter. The Visual Basic,
C, and LabVIEW programs on the CDROM demonstrate the syntax for calling the
DLL.
You can also use the optional SQS-242 deposition control program as the user
interface. This program provides multi-layer processes, graphing, data logging,
and digital I/O. It can be controlled from your application by sending just a few
ASCII text commands. This is an excellent option if you have an application that
already communicates with a stand alone deposition controller via RS-232.
Contact INFICON for more information regarding the optional SQS-242 deposition
control program.
ASCII Commands
Function
Calls
Properties
Methods
Events
SQM242a DLL
Any
Windows
Program
RS-232
Ethernet
ActiveX
SQM242a Class
RS-232
2 Control Outputs
(per card)
4 Sensor Inputs
(per card)
Digital I/O
(PLC)
SQS-242
Deposition
Program
SQM242
PCI Card
(up to six)