521 East 3
rd
Street Mt. Vernon, NY 10553 • www.keydigital.com
Rev 1.0
– Sep, 2021
25
TCP/IP and RS-232 Commands
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KD-PS42 allows control over serial interface for bi-directional
communication.
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Use Unit Control pins 4, 5, and 6 for RS-232 communication
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Serial interface may also be accessed using a TCP/IP connection or using
the USB Service port
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Default IP address is 192.168.1.239, with default port 23
Connection Protocol
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Baud Rate = 57,600 bits per second as default
o
Note: Activating KD-CamUSB or KD-Amp220 control mode will automatically adjust the baud-
rate to 9,600. It must be 9,600 to support KD-CamUSB and KD-Amp220 Integrated Systems
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Data Bits = 8
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Stop Bits = 1
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Parity = None
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Flow Control = None
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Carriage Return = Required at end of each string
Notes:
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Commands are not case-sensitive
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Spaces are shown for clarity; commands should NOT have any spaces
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After a new command is received, a prompt should be sent back