Moxa ICF-1280I-M-ST-T [4/16] Features

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Using Remote Fiber Diagnosis:

Set DIP switch SW8 to the ON position on any ICF-1280I converter and

then note the status of the Ready LED. A flashing green Ready LED

indicates that the Fiber Diagnosis has finished. The Fault LED indicates

the location of the fiber connection abnormality. The P1 or P2 LED

indicates which side (Tx or Rx) is causing the problem.

The Fault LED will shine a steady red to indicate an adjacent fiber

connection error, or flash red to indicate a non-adjacent fiber connection

error. If there are no fiber connection errors in the entire topology, the

related LEDs will shine green or remain OFF. If the fiber connection error

is adjacent to the converter, the status will also be indicated by the P1

(Port 1) or P2 (Port 2) LEDs. A flashing red light on P1 (or P2) means that

the Rx fiber cable connected to this port is broken. Similarly, a solid red

light on P1 (or P2) means that the Tx fiber cable for this port is broken.

If the fiber connection error is not adjacent to the converter (i.e., the fiber

cables connected to this converter are working properly), the Fault LED

will flash red. As a result, you should run Remote Fiber Diagnosis on every

other (second) converter in the topology to recursively troubleshoot the

problem. Further descriptions and troubleshooting can be found in the

Troubleshooting table.

Redundant Ring

The ICF-1280I series converters can connect PROFIBUS devices in a

redundant ring topology. Use the DIP switch to configure all the

ICF-1280I converters to Redundant Ring mode. When a PROFIBUS

master transmits a signal from one converter to the PROFIBUS slave

devices, this signal will travel to all the converters around the ring until it

returns to the original converter and terminate.

How to form a redundant ring topology:

To form a redundant ring topology, connect the Tx Port (Port 1) on the

first ICF-1280I converter to the Rx Port (Port 2) on the following

converter. Then, connect the Tx Port (Port 2) on the first ICF-1280I

converter to the Rx Port (Port 1) on the preceding converter. Similarly,

connect the Rx Port (Port 1) on the first ICF-1280I converter to the Tx

Port (Port 2) on the following converter. Then, connect the Rx Port

(Port 2) on the first ICF-1280I converter to the Tx Port (Port 1) of the

preceding converter.

Features

• Redundant Ring mode for fiber communication backup with zero

recovery time