S
ERIAL
C
OMMUNICATIONS
12
Copyright LMI Technologies Inc. 2003
2.4.4
C
ABLE
C
ONNECTOR
PIN
OUT
The signals use shielded twisted pairs as follows
:
NOTE
: A terminating resistor (220 ohm) should be installed on the end unit across TX-, TX+
and across RX-, RX+ to reduce noise.
W
ARNING
:
DEMO
Cable supplied by LMI communicates via RS232 protocol and has to be
used for testing purposes only.
It is not recommended this cable to be used for final operation, because it is not manufactured
to communicate via RS 485 protocol.
