Transition Networks C/RS485-CF-01(SC), C/RS485-CF-02(SC), C/RS485-CF-01(SM), C/RS485-CF-02(SM), C/RS485-CF-01 User Manual

Designed to be installed in the TRANSITION Networks E-MCC-1600 Media
Converter Chassis, the C/RS485-CF-0x series serial-port fiber extension Media
Converters extend distances between RS-485 or RS-482 nodes for up to two (2)

kilometers over multimode fiber or up to twenty (20) kilometers over singlemode
fiber.

C/RS485-CF-0x series Media Converters allow RS-485 two-wire half-duplex
operation, RS-485 four-wire full-duplex operation, and RS-422 four-wire
operation, with switch-selectable termination and biasing resistors, at speeds from
1 Kb/s to 500 Kb/s.

RS-485/422 Serial-Port Fiber Extension

Media Converters

C/RS485-CF-01, C/RS485-CF-02

USER’S GUIDE

C/RS485-CF-01

Provides one (1) terminal block RS­485/RS-422 copper connector and
one (1) set of RX (receive) and TX
(transmit) ST 100BASE-FX connectors
to multimode fiber @ 850 nM.

C/RS485-CF-01(SM)

Provides one (1) terminal block RS­485/RS-422 copper connector and
one (1) set of RX (receive) and TX
(transmit) ST 100BASE-FX connectors
to singlemode fiber @ 1300 nM.

C/RS485-CF-01(SC)

Provides one (1) terminal block RS­485/RS-422 copper connector and
one (1) set of RX (receive) and TX
(transmit) SC 100BASE-FX connectors
to multimode fiber @ 850 nM.

C/RS485-CF-02

Provides one (1) DB-9 RS-485/RS-422
copper connector and one (1) set of
RX (receive) and TX (transmit) ST
100BASE-FX connectors to multimode

fiber @ 850 nM.

C/RS485-CF-02(SM)

Provides one (1) DB-9 RS-485/RS-422
copper connector and one (1) set of
RX (receive) and TX (transmit) ST
100BASE-FX connectors to singlemode

fiber @ 1300 nM.

C/RS485-CF-02(SC)

Provides one (1) DB-9 RS-485/RS-422
copper connector and one (1) set of
RX (receive) and TX (transmit) SC
100BASE-FX connectors to multimode

fiber @ 850 nM.

C/RS485-CF-0x in the Network . . . .2

Installation . . . . . . . . . . . . . . . . . . . .3

Operation . . . . . . . . . . . . . . . . . . . . .5

Fault Isolation and Correction . . . . .5

Cable Specifications . . . . . . . . . . . . .6

Technical Specifications . . . . . . . . . .7

Compliance Information . . . . . . . . . .8

C/RS485-CF-0X in the NETWORK

The C/RS485-CF-0x can be used to install a fiber network extension between
RS-485 or RS-422 network nodes.

One slide switch on the C/RS485-CF-0x series Media Converter allows site
selection of RS-485 2-wire (half-duplex) operation, RS-485 4-wire (full­duplex) operation, or RS-422 4-wire (full-duplex) operation (see page 3).

A second slide switch on the C/RS485-CF-0x series Media Converter allows
echo prevention in two-wire mode or transmission only on "transmit/receive ­(B) RS-485 2wire, transmit - RS-422 and transmit/receive + (A) RS-485 2wire,
transmit + RS-422" pair (see page 3).

A 4-position dip switch on the C/RS485-CF-0x series Media Converter allows
site selection of 130 ohm terminator insertion on the "receive – C/RS485 4
wire, RS422 and receive + C/RS485 4 wire, RS422" pair or on the
"transmit/receive - (B) C/RS485 2wire, transmit - RS422 and transmit/receive
+ (A) C/RS485 2wire, transmit + RS422" pair (see page 3.).

The dip switch also allows site selection of 1K ohm pull down on
"transmit/receive - (B) C/RS485 2wire, transmit - RS422" or of 1K ohm pull up
on "transmit/receive + (A) C/RS485 2wire, transmit + RS422” (see page 3).

C/RS485-CF-0x

2

RS-485/422 CABLE

RS-485/422 CABLE

INSTALLATION

Set Switches

Use a small flatblade
screwdriver or a similar
device to set the recessed
switches according to the
site installation.

1. Set the 2-wire /4-wire
slide switch to the 4­wire setting to enable the "receive – RS-485 4 wire, RS422 and receive +
RS-485 4 wire, RS-422" pair for RS-422 4 wire full duplex operation.

2. Set the RS-485/RS-422 slide switch to the RS-485 position to prevent
echo in two-wire mode. Set the RS-485/RS-422 slide switch to the RS­422 to allow transmit only on "transmit/receive - (B) RS-485 2wire,
transmit - RS-422 and transmit/receive + (A) RS-485 2wire, transmit +
RS-422" pair.

Refer to the drawing and notes below for setting the 4-position dip switch.

* Position 1 ON inserts 130 ohm terminator on the "receive – RS-485

4 wire, RS-422 and receive + RS-485 4 wire, RS-422" pair.

** Position 2 ON inserts 130 ohm terminator on the "transmit/receive -

(B) RS-485 2wire, transmit - RS-422 and transmit/receive + (A) RS­485 2wire, transmit + RS-422" pair.

*** Position 3 ON enables 1K ohm pull

down

on "transmit/receive - (B)

RS-485 2wire, transmit - RS-422".

**** Position 4 ON enables 1K ohm pull

up

on "transmit/receive + (A)

RS-485 2wire, transmit + RS-422

Install Slide-In-Module in E-MCC-1600 Chassis

NOTE: Media Converter Slide-in-Modules can be installed in any installation
slot, in any order.

1. Remove the Media Converter Slide-in-Module protective plate from

the selected installation slot by removing the two (2) screws that
secure the plate to the front of the E-MCC-1600.

2. Carefully slide the Media Converter Slide-in-Module into the

installation slot, aligning the Media Converter Slide-in-Module with
the installation guides.

NOTE: Ensure that the Media Converter Slide-in-Module is firmly
seated against the backplane.

3. Secure the Slide-in-Module by securing the panel fastener screw

attached to the Slide-in-Module to the E-MCC-1600 chassis.

3

RS-485

RS-422

DOWN=ON Inserts 130 resistor on "receive"*

DOWN=ON Inserts 130 resistor on "transmit"**

DOWN=ON Enables 1K "pull-down"***

DOWN=ON Enables 1K "pull-up"***

*

1

2

3

4

2-wire

4-wire

INSTALLATION -- Continued

COPPER /DB-9 CONNECTOR

NOTE: Shielded cables are required on DB-9 for EMC compliance.

1. Locate or build TIA/EIA-574-DB-9 compliant cables configured as
shown on page 7, with a male DB-9 connector at one end of the
cable and with a straight-through cable.

2. Connect the male DB-9 connector at one end of the cable to the
Media Converter female DB-9 connector.

3. Connect the other end of the cable to the node device.

COPPER /TERMINAL BLOCK CONNECTOR

1. Locate or build TIA/EIA-574-compliant terminal block cables
configured as shown on page 7 and with straight-through cable.

2. Using a small flatblade screwdriver or a similar device, release each
terminal block installation location as necessary. Refer to the
diagram on page 7, connect the wires at one end of cable to the
Media Converter terminal block connector.

3. Connect the other end of the cable to the node device.

FIBER

1. Locate or build TIA/EIA-574-compliant fiber cable with male two­stranded TX to RX connectors at both ends.

2. Connect the male TX and RX cable connectors at one end of the
cable to the TX and RX female connectors, respectively, on the
Media Converter.

3. Connect the male TX and RX cable connectors at the other end of
the cable to the RX and TX connectors of the IEEE 802.3™
compliant fiber device.

Connect to Power

The Media Converter is powered by the E-MCC-1600.

C/RS485-CF-0x

4

T

X

R

X

TX

RX