User's Manual

Page 92 MultiRanger 100/200 – INSTRUCTION MANUAL 7ML19981FB06
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Comms Installation
Communications Installation
Wiring Guidelines
• the RJ-11 cable maximum length is 3 meters
• RS-485 maximum length is 1,200 meters (4,000 feet)
• use 24 AWG (minimum)
• use good quality communication grade (shielded twisted pairs) cable that is
recommended for RS-485 for port 2 (Belden 9842)
• run the communication cable separately from power and control cables (do not tie
wrap your RS-232 or 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
Ports 1 and 2
Ports 1 and 2: RS-232 RJ-11 Jack and RS-485 Locations
The RJ-11 jack and the RS-485 port are inside the enclosure of the unit.
Note: Improper wiring and incorrect choice of cables are two of the most
common causes of communication problems.
Port Wall Mount
1 RS-232 port (RJ-11 modular telephone jack) is on the motherboard and
is generally used with a laptop computer or modem.
2 Connections for the RS-485 port are on the terminal block.
L2/N L1
TB1
TB3
TB2
RELAY 1
RELAY 2
RELAY 3
RELAY 4
RELAY 5
RELAY 6
2
1
mA INPUT
SHIELD
SYNC
1
2
4 - 20 mA
OUTPUTS
TS-3
SHIELD
1
2
DISCRETE
INPUTS
RS485
B
A
COM
RJ-11 Jack
RS-485 Port