Vecow RCS-70000 User Manual page 29

GPI SINK Mode
Isolated GPI input circuit in SINK mode (NPN) is illustrated as follows.
GPI SOURCE Mode
Digital GPI input signal circuit in SOURCE mode (PNP) is illustrated as
follow:
GPO SINK Mode
Digital GPO output circuit in SINK mode (NPN) is illustrated below.
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©Vecow RCS-7000 Series Robust Computing System User Manual GETTING TO KNOW YOUR RCS-7000