Telenetics MIU Dial or Leased Line modem with RS-485 manual MIUXXX/485 DIP Switch Setup

B A

RJ11 Telco Port *

Power Connector

(* Not on MIU232/485 Converter)

	RS485
TX+ TX- RX+ RX-	Connection

3 & 4 always UP.

1 UP, 2 DOWN when using DB9 for modem configuration.

1 DOWN, 2 UP ~ Modem connected to RS485. Do not connect data to DB9

B

LED 1 *

Earth/Digital Ground (Jump pins if req’d) *

RS232 Data Port (DB9 female) for modem configuration only.

LED 1...

♦Blinking = POWER ON

♦Steady = MODEM CONNECTED (CD)

4 3 2 1 4 3 2 1

B				A
4	3	2	1	4	3	2	1

B				A
4	3	2	1	4	3	2	1

Point-to-Point, 4-Wire: Set Switches B-3 & B-4 DOWN(OFF)

Point-to-Point, 2-Wire: Set Switches B-3 & B-4 UP(ON)

ALine Terminate DC : Set Switches B-1 & B-2 UP(ON)

Line Terminate AC : set Switches B-2	UP(ON)
For LoopBack Test mode : Set Switches B-3 & B-4 UP(ON)
Set Switch A-4 DOWN(OFF)

Multi-drop (Host), 4-Wire: Set Switches B-3 & B-4 DOWN

Multi-drop (Host), 2-Wire: Set Switches B-3 & B-4 UP

Multi-drop (Slave), 4-Wire: Set Switches B-3 & B-4 DOWN

Multi-drop (Slave), 2-Wire: Set Switches B-3 & B-4 UP

Line Terminate	: Set Switches B-2 & B-1DOWN (OFF) for
	all Slaves except	UP(ON) on unit furthest
	from the Host
Switch A-1:	RTS/CTS Delay: UP = 0 sec; DOWN = 7ms
Switch A-2:	DOWN = TXD enables TX +5ms		Select only A-2 or
Switch A-3:	DOWN = RTS enables TX		A-3

Switch A-4: UP(ON) = TX clamps RXD off (ON) in 2-Wire (half duplex) mode

MIUXXX/485 DIP SWITCH SETUP

CIU Installation, Operation & Diagnostics Edition: June 17, 2003

SHEET TWO