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521 East 3
rd
Street Mt. Vernon, NY 10553 • www.keydigital.com
Rev 1.0
– Nov, 2022
13
•
Used for configuration and control from
PC via KDMS Pro, KDMS, or third-
party control terminal
•
Used for firmware updates (consult
with Key Digital tech support before
updating firmware).
o
Note:
After updating firmware,
all unit settings are restored to
defaults except IP information.
Please collect all customized
settings info before loading
firmware.
•
Supports USB driver for Windows, Mac
•
Will register as “Prolific USB-to-Serial
Comm Port in Device Manager
•
Can be used as RS-232 control port.
Baud rate is 115,200.
Ground Screw:
Connect to ground screw on rack or direct to ground wire from ground post to ensure solid
grounding of the main unit.
TCP/IP Unit Control:
Used for unit control from a control system and/or PC
•
Connect ethernet cable from the KD-MS4x4G-2 to a network router or connect a straight through cable
directly from a PC
•
Default static IP address is 192.168.1.239, port 23
•
Unit configuration, control, and firmware updates are achieved with Key Digital Management Software
™
Pro (KDMS
•
See TCP/IP and RS-232 Commands section for full API
IR & RS-232 Unit Control:
Used for unit control from a control system and/or PC
•
6-Pin Terminal Block for IR and RS-232
•
Pin out:
o
Pin 1 = Serial (Wired) IR In
o
Pin 2 = IR Ground
o
Pin 3 = No Connection
o
Pin 4 = RS-232 Tx Data
o
Pin 5 = RS-232 Ground
o
Ping 6 = RS-232Rx Data
•
See TCP/IP RS-232 Commands section for full API