Owner's Manual

Power
Ready to operate
Flashing rapidly, error
➞
U-USB < 4,5 VDC
➞
Connect power supply unit
Flashing slowly, error
➞
U-UOUT < 11,2 VDC
➞
Connect power supply unit
Error
RX/TX
Shows the status of the transmission line (TX) and the reception line (RX).
TX, sending data via the RS485 bus
RX, receiving data via the RS485 bus
Echo off
Shows the status of the Echo off function.
Echo off disabled (
➞
echo switched on)
Echo off enabled (
➞ echo switched off
)
Bias on
Shows the status of the Bias on function.**
Bias resistors (560 Ω) for RS485A and B are enabled
No bias resistors are connected
LED display
– 21 –
PowerRX/TX
K-114
USB to RS485 Converter
Echo
off
Bias
on
High Speed
on
Termination
on
USB RS485
RS485B
GND
RS485A
+VCC
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15 VDC GND
External Supply