The ODW-611/612, available from local distributor, Throughput Technologies, are fibre-optic modems that can be used to create either point-to-point, redundant ring or multidrop fibre-optic solutions for devices with ProfibusDP interfaces.
The ODW-611/612 modems are designed for harsh industrial usage as well as road or railway installations meeting industrial level EMC specifications and having a wide operating temperature range. The maximum distance of a fibre link depends on selected transceiver and fibre type. Fibre distances up to 80 km (50 miles) are possible on each leg of the ring, meaning huge rings over 1000 km (621,4 miles) in circumference could be created.
The ODW-611/612 are able to automatically detect the data rate of the connected ProfibusDP device and hence need minimal configuration prior to use. The unit also has a retiming function that eliminates the problem of jitter and hence ensures reliable communications in all situations.
The unit has LED indication to display fault conditions as well as relay contacts that can be connected to a PLC or similar device to allow network problems to be diagnosed at a central point. For a multidrop network it is possible to use the ODW-611 as the endpoints.
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