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SELENA Multifunctional LED Clock
USER MANUAL V.27
RS-485
COMMUNICATION CABLE
( 2 COND. )
SHIELDING OPTIONAL
RS-232 (PC) to RS-485
CONVERTER
( option # 901 )
88:88
UP TO 64 SLAVES
Or Optional up to 400 clocks
PC
WITH RS-232 or USB PORT
AND INSTALLED
“PC2KERA” DRIVER S/W
( option # 721 )
+ TX
- TX
GND
Optional
shield
+ comm
88:88
- comm
88:88
Observe the conductor polarity
while wiring to the terminals
TO MORE SLAVES
PC USED AS THE MASTER
WITH TWISTED PAIR ( RS-485 ) SYNC COMMUNICATION WIRING ALLOWING FOR LARGE NUMBER OF SLAVES
OVER LONG WIRING DISTANCES.
RS-232
COMMUNICATION CABLE
( 2 COND. ONLY )
SHIELDING OPTIONAL
RS-232 or USB (PC)
SERIAL PORT
PC
WITH RS-232 or USB PORT
AND INSTALLED
“PC2KERA” DRIVER S/W
( option # 721 )
88:88
Observe the conductor polarity
while wiring to the terminals
RX
88:88
GND
TO MORE SLAVES
PC USED AS THE MASTER
WITH SERIAL RS-232 SYNC COMMUNICATION WIRING ALLOWING FOR SMALL NUMBER OF SLAVES
OVER SHORT OR MEDIUM WIRING DISTANCES.
27
KERA TECHNOLOGIES INC. 2010
www.ledclocks.com