Moxa ICF-1180I-S-ST [3/16] Fiber link monitor

- 3 -

PROFIBUS Fail Safe

When the PROFIBUS device malfunctions or the serial interface fails, it

will generate electrical noise that can cause bus failure. Traditional media

converters will let the noise signal pass through the fiber and on to the

other converter, disrupting data communication between the two buses

and eventually causing communication to cease across the entire system.

When this occurs, engineers will not be able to easily locate the failed

device because the entire PROFIBUS network is down. To avoid this

situation, the ICF-1180I is designed to detect and recognize noise signals.

If the bus fails on one side, the noise signal will not propagate through the

ICF-1180I and affect additional bus segments. In addition, the ICF-1180I

will also trigger an alarm notification to the field engineer on the location

of the failure.

Fiber Link Monitor

The ICF-1180I series’ Fiber Link Monitor function detects communication

errors on either the fiber side or the PROFIBUS side. When a

communication error occurs, the corresponding LED will shine red and the

relay alarm will activate.

Reverse Power Protection

The Reverse Power Protection feature provides extra protection against

accidentally connecting the power cables to the wrong terminal. The

converter is designed to detect automatically which power wire is positive

and which is negative, and then adjust the power supply accordingly.

Remote Fiber Diagnosis

Fiber optic cables are often deployed for long distance communication

and a fiber optic inspection pen is used by engineers to detect

communication quality issues. ICF-1180I series converters eliminate the

need for a fiber optic inspection pen by providing a Fiber Test function

that uses DIP switch adjustments. By using the Fiber Test function, users

can determine which side (Tx or Rx) is causing the problem on the

converter. Fiber cable abnormalities can be automatically detected and

identified by the LED indicator.