Technical data

W&T

Serial Fiber Optic Interfaces

Subject to error and alteration

Interface FO <> RS485 / RS422, #61210

Function

The W&T Interface 61210 allows bi-directional conversion of an

RS485 or an RS422 interface into a fiber optic interface with a

transmission speed of up to 1,5 Mbps. The interface works

independently of the data format used and converts one data

line and one hardware handshake line in each direction.

Connectors

The fiber optic cables are connected to the converter using ST

series connectors, with a DB9 plug for the RS485 / RS422

connection. The arrangement of the signal connectors on the

front panel of the interface can be seen from the following

illustration:

Serial Port

Power LED

Data LED

TxD RxD

Fiber optic

ST connectors

The pin configuration for the serial connector is shown in the

following table, and may also be found on a sticker attached to

the device:

Pin# Function

1 data out A (-)

2 data in A (-)

5 signal GND

6 data out B (+)

7 data in B ( +)