Moxa ICF-1280I-M-ST [3/16] Fiber link monitoring

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halt. 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-1280I series converter has a mechanism to detect and

recognize noise signals. If the bus fails on one side, the noise signal will

not propagate through the ICF-1280I converter and affect additional bus

segments. In addition, the ICF-1280I converter will also trigger an alarm

to provide the location of the failure to the field engineer.

Fiber Link Monitoring

The ICF-1280I series converter provides a fiber link monitoring function

to detect the communication errors on both sides of the fiber connection.

When a communication error occurs, a red LED status indicator (P1, P2,

or Fault LED) will turn on and the relay alarm will activate. If a fiber

abnormality occurs on a remote fiber segment, the Fault LED will flash.

Engineers can then use the Fiber Diagnosis function for troubleshooting.

Reverse Power Protection

The Reverse Power Protection feature protects 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

Optical fiber cables are often deployed for long distance communication

and a fiber optic inspection pen is used by engineers to ensure proper

communication quality of the fiber cable. The ICF-1280I series converters

eliminate the need for a fiber optic inspection pen by providing a Remote

Fiber Diagnosis function that uses DIP switch adjustments. There are two

major functions provided by Remote Fiber Diagnosis: (1) determining

which side (Tx or Rx) is causing the problem on the converter; (2)

examining the fiber connections for the overall topology from any

individual converter. Fiber cable abnormalities can be automatically

detected and identified by the LED indicator even if it is not adjacent to

the converter. Remote Fiber Diagnosis facilitates fiber cable deployment

and management, and also significantly shortens troubleshooting time by

examining fiber connections for the overall topology from any individual

converter.