User's Manual

Table Of Contents
PL-611 IQ Radar 300 Page 35
Interconnection
Interconnection
Interconnection
Interconnection
Communications Installation
Wiring Guidelines
RS-485 maximum length is 1,220 meters (4,000 feet)
use 24 AWG (minimum)
use good quality communication grade (shielded twisted pairs) cable for port 1that is
recommended for RS-485.
run the communication cable separately from power and control cables. (Do not tie
wrap your RS-485 cable to the power cable or have them in the same conduit.)
use shielded cable and connect to ground at one end only
follow proper grounding guidelines for all devices on the bus
Improper wiring and incorrect cable choices are the two most common causes of
communication problems.
Port 1: RS-485
The terminal block uses terminal 3,4,5 and Ground for RS-485.