1
LS921P-C/ LS923P-C
Insert the plug of the power cord into a wall outlet. The
POWER indicator will light.
Connecting RS-485/RS-232C TTL
Device
Use these ports to connect an external device of RS-C
TTL/ RS-85 format.
RS-485 Unit
Rx(-)
Tx(+)
RS-232C TTL
Rx(-)
GND
Tx(+)
Connections