INFICON SQM-242 Thin Film Deposition Controller Card Software Operating Manual - Manual (Page 58)

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SQS-242 Operating Manual
The communications parameters (baud, parity, bits, stop) are shown below the
Comm Port dropdown. The baud rate can be changed in the SQS242.INI file (see
section 3.8 ).
Address: Several PLCs can be controlled from a single computer Comm Port by
connecting their expansion ports. The slave address of each such PLC is usually
set by a rotary or dip switch, and must be unique. Single PLC systems usually use
Address 0. Consult your PLC User Manual.
If the PLC is found at the selected Comm Port and Address, the COMM LED on
the PLC will flash continuously. The PLC model is displayed below the address.
3.5.4.6 Card Tab
Figure 3-23 Card tab
Mode: In Normal mode, the SQS-242 gets readings from the SQM-242 card(s). In
Simulate mode, the SQS-242 generates simulated readings even if a card is not
installed. This is useful for testing new processes and learning the software.
The firmware revisions of the installed SQM-242 cards are listed below the mode
buttons. A value of 0 indicates the card is not installed. Analog Rev refers to the
revision of an SAM-242,card if installed. DLL Return is the status of the SQM-242
card’s Windows drivers. DLL return values of 9XX indicate a card installation error.
Front Panel Enabled: When used with the SRC series computer, enables/disables
the SQS-242 software to read the SoftKeys.
Period: Sets the measurement period between 0.2 seconds (5 readings per
second) and 2 seconds. A longer period gives higher reading accuracy, especially
at low rates.