from the Automation List department...
RS-485 to Optic Fiber converter
Communications systems and equipment. topic
Posted by David on 19 April, 2000 - 4:11 pm
I'm looking a RS-485 to Optic Fiber converter.
I've a Series A Mitsubishi PLC's connected via RS-485 and I need to convert this bus to a optic fiber.

Thanks in advance

Posted by Mark Bayern on 20 April, 2000 - 1:28 pm
B&B Electronics, has the FOSTCDR in their printed catalog. It converts RS-232/422/485 to fiber and back. Din rail mounted.


Posted by Vega M. Hernan M. on 20 April, 2000 - 1:33 pm
Try modem FO/RS-485: IFS, Model: D1300.


Posted by Michael Little on 20 April, 2000 - 1:41 pm
You may want to look at Omega ( 1-800-826-6342). They have a couple of serial to fiber converters. Most are RS232 to fiber, but they
have a RS232/422 to fiber converter.

Posted by Jim Fledderjohn on 20 April, 2000 - 3:16 pm
Phoenix Contact makes a nice din-rail mount serial to fiber converter. Try PSM series.


Posted by Moret, O. on 20 April, 2000 - 4:29 pm
Dear David,

Try Hirschmann. They deliver good and reliable rs485 to fiber converters.

Met vriendelijke groeten,

Onno Moret

Imtech Projects West
Control Systems
tel :010-4477228
fax :010-4477210
Bezoek onze Internetsite (klik hieronder)
Any opinions expressed in this message are not necessarily those of the

Posted by michael weyring on 28 April, 2000 - 1:10 pm
Hello there,
Phoenix Contact has a PSM product range that does this conversion. They have versions for RS485 both 2-wire and 4-wire. Try or

michael weyring

Posted by bong monta on 8 May, 2000 - 3:19 pm
Try Hirschmann. They have a product, the OZD 485, which converts any RS485 communications to Fiber optic. We have already tested this device with Allen Bradley DH+ and Remote I/O, which might as well work also with your plc.

Hope this helps.

Bong Monta

Posted by Steven P on 24 August, 2008 - 8:54 pm
Try this website:, their serial to fiber optic converter comes with MM/SM modes and ST/SC connectors, you can connect RS232 to one side and RS485 or RS422 to the other side. Here is the link: iber-Optic-Converter.htm

Posted by Roy Matson on 26 August, 2008 - 12:37 am
They seem to have a full range of FO modules.


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