
Chapter: Connectors Serial Ports COM2 through COM4
page 30 Beckhoff New Automation Technology CB3056
When the module is ordered in standard configuration, the 2x5pin connector offers mouse and keyboard
signals.
Alternative pinout of COM-connector:
Description Name Pin Name Description
keyboard clock KCLK 1 6 MCLK mouse clock
keyboard data KDAT 2 7 MDAT mouse data
reserved N/C 3 8 N/C reserved
reserved N/C 4 9 N/C reserved
ground GND 5 10 3.3V 3.3 volt supply
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