Schneider Automation Interbus Fiber Optic CommunicationsAdapter Manual de usuario descargar pdf (Pagina 12)

Interbus with TSX Momentum

reported to the master. This condition is visually signalled through the status LEDs

(WG, WR), also refer to to the LED status displays table (page 22).

Any I/O error reported by an I/O base is sent as a module error to the bus master

through the Interbus.

1.2.5

Light Level Test Function

The ”Test” push–button can verify optical transmission quality without the need for

an additional measuring instrument. With the Interbus properly installed, a press of

the push–button starts testing. This causes the incoming light level to be

registered and qualitatively evaluated. If neither the WR nor the WG status LED

lights when the push–button is pressed, then the incoming light level is at least

–22 dBm.

Possible causes if either the WR or WG status LED should light when the

push–button is pressed:

H The transmission path is too long –> select another type of medium/adapter,

or make use of a repeater

H The bending radius is too small –> choose a larger radius

H Bad connector quality, dirty lens (needs cleaning), or fiber end scratched

(polish)

H Broken fiber

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Schneider Automation Interbus Fiber Optic CommunicationsAdapter Manual de usuario Pagina 12