G - Physics – 08 – C
Patent
G - Physics
08
C
354/70
G08C 15/06 (2006.01) G05B 19/05 (2006.01) G06F 17/40 (2006.01) H03M 1/00 (2006.01)
Patent
CA 1118901
GD15-10-5991 SYSTEM FOR CONVERTING ANALOG SIGNALS TO MULTI- PLEXED DIGITAL DATA Abstract of the Disclosure A system for providing digital data representative of a selected analog signal on the data lines of a programmable controller using a central processing unit having output address lines, a selected number of input/output bi-direc- tional data lines, means for creating a WRITE signal in a WRITE line and means responsive to the WRITE signal for writ- ing data from the data lines into the selected address loca- tions. The system comprises a conversion circuit for convert- ing the input analog signal to digital data on output data terminals upon receipt of a conversion signal simultaneously with an analog signal and means for creating a completion signal when the conversion is completed; at least two analog input modules, each of the modules including means for re- ceiving at least two analog conditions, means for converting a selected one of the analog conditions to an analog signal, selecting means for selecting one of the conditions upon creation of the WRITE signal, means for actuating one of the input modules, directing means responsive to the actuation of a module for directing the selected analog signal to the conversion circuit, means for latching the selecting means until creation of the completion signal; and, means for actuating the actuating means of only one of the input modules at any given time.
287011
Fauchier Jess F.
Seipp William H.
Whiteside Stephen E.
Gowling Lafleur Henderson Llp
Gulf & Western Industries Inc.
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