Mircom TX3-ER-8 Installation Manual page 27

Note:
Note:
2.7 RS-485
If you do not have end-of-line 120 Ω resistors, close JW5 on the first and last
controllers instead.
If there are problems with RS-485 communication, close both JW9 and JW10 on
either the first or last controller connected by RS-485.
Note:
Recommended cables for RS-485:
•
•
Maximum total length for RS-485:
•
•
Elevator Restriction System Installation and Operation Manual
DIP switch 7 is not used and must be left OFF.
For units with an TX3-IP Module installed, DIP Switch 8
determines how the IP address is assigned to the IP Module.
• DIP Switch 8 OFF: The IP address is assigned using a
DHCP server. This is the default factory setting.
• DIP switch 8 ON: The IP address is assigned using the
TX3 Configurator software.
Use twisted shielded pair.
RS485 cables
• Belden 3109A RS-485, (4 pr) 22 AWG (7x30) or equivalent
• Belden 9842 RS-485, (2 pr) 24 AWG (7x32) or equivalent
• Belden 9841 RS-485, (1 pr) 24 AWG (7x32) or equivalent
CAT5 Cables
• Belden 72001E ETHERNET Cat 5e 2 Pair, 24 AWG or equivalent
• Belden 70006E Cat 5e, 100Mb/s, Quad, AWG 22 (1) or equivalent
4000 feet (1219.2 m) for 22 AWG
2500 feet (762 m) for 24 AWG
Installing the Elevator Restriction Unit
27