Flintec FRD-100 LCD - Manual (Page 4)

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FRD-100 BL Manual page 4 of 7
CABLE ASSIGNEMENT
* Note that RS-485 signals are deactivated internally to avoid picking up noise.
To activate RS485/422 you have to open the compartment on the back using Torx TX-
25 for the M4x10 screws, connect the Black and the Violet leads to terminals A+ and
B- respectively
3. Operation Notes
INSTALLATION NOTES
To comply with various safety and conformance rulings, the system must be properly
grounded. The Scoreboard itself needs to be connected to safety earth, and the
connector should be firmly mated and fixed by use of fixing screws.
When power is applied, the display should respond by a sequence of control messages
(see „Normal Behaviour“). After the short start-up formality, display is blanked. If this
sequence is missing, check power source and connections. The voltage present at the
pins on the Scoreboard D-sub should be stable between 8 and 28 Vdc.
Pink +V DC External Power Supply +
Grey GND External Power supply –
*Black A+ RS-485/422 Transciever
*Violet B- RS-485/422 Transciever
White TTY+ Input positive 20 mA
Brown TTY- Input negative 20 mA
Blue RxD RS232 Input from TxD of Host
Red/Blue
RxD
GND
RS232 Signal Ground
(Short it with GREY)
Red TxD
RS232 Output to RxD of Host
(Not needed for normal use)
Green +O
+ Output
(Not needed for normal use)
Yellow -O
- Output
(Short it with GREY)