Datasheet

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PROFIBUS Fail-safe
Electrical noise may be generated when a PROFIBUS device
malfunctions or the serial interface fails, resulting in bus failure.
Traditional media converters transmit noise signals through the fiber
wire to the other converter. This not only disrupts data
communication between the two buses, but will also bring
communication across the entire system to a halt. When this occurs,
the 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 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.
Auto/Manual Baudrate Settings
The ICF-1280I converters convert signals back and forth between PROFIBUS and fiber at baudrates between 9.6 kbps to 12 Mbps. Engineers do
not need to know the baudrate of the connected PROFIBUS device; the ICF-1280I converters can automatically detect the baudrate of the
PROFIBUS device and apply this baudrate directly. This is an extremely convenient feature. If necessary, baudrates can be set to a fixed value via
DIP switches to shorten the baudrate detection period when the system initializes.
Fiber Link Monitor
The ICF-1280I converters support a fiber link monitoring function to detect communication errors on both sides of the fiber connection and
determine which side (Tx or Rx) is causing the problem. When a communication error occurs, a red LED status indicator will turn on and the relay
alarm will activate. If a fiber abnormality occurs at a remote fiber segment, the Fault LED will flash to indicate the abnormality was in the remote
segment. Engineers can use the fiber test function for troubleshooting.
Fiber Signal Intensity Diagnosis
In some circumstances, you may need to measure the receive level of the fiber-optic port with a voltmeter, which can be connected while the
device is operating (doing so will not affect data transmission). The measurement can be taken with a voltmeter and read on a PLC that uses
floating high impedance analog inputs, which allow you to do the following:
• Record the incoming optical power for later measurement (e.g., to indicate aging or damage).
• Carry out a good/bad test (limit value).
Specifications
Serial Interface
Optical Fiber ICF-1280I-M-SC Series: 100BaseFX ports (multi-mode SC connector)
ICF-1280I-M-ST Series: 100BaseFX ports (multi-mode ST connector)
ICF-1280I-S-SC Series: 100BaseFX ports (single-mode SC connector)
ICF-1280I-S-ST Series: 100BaseFX ports (single-mode ST connector)
100BaseFX ports (multi-mode SC connector)
100BaseFX ports (multi-mode SC connector)
100BaseFX ports (single-mode SC connector)
100BaseFX ports (single-mode SC connector)
Multi-Mode Single-Mode
Wavelength 820 nm 1310 nm
Tx Output -14 dBm -7 dBm
Rx Sensitivity -28 dBm -29 dBm
Link Budget 14 dBm 21 dBm
Typical Distance 4 km 45 km
PROFIBUS Interface
Baudrate 9600 bps to 12 Mbps
Connector DB9 female
Industrial Protocols PROFIBUS DP
Isolation 2 kV (built-in)
No. of Ports 1