Industrial
Electronic Devices
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Phone +39.0438.30.91.31
User Manual
RS232/S485/USB / Optic Fiber
Document code: MN67072_ENG Revision 1.001 Page 14 of 18
FIBER OPTIC FUNCTION:
By acting on ‘Dip-Switch C’ it is possible to select for each fiber, Tx and Rx, the logical state of 0 and 1. This Dip-Switch is inside the device,
so you have to remove the top cover and act on the switches.
Usually the ‘Idle State’ (logical 1) is when the light of fiber is ON, so you have to put the Dip 1 and 3 at Off and Dip 2 and 4 at On (these are
also the Factory Settings). It is possible to invert this so you can have that the ‘Idle State’ (logical 1) when the light of fiber is OFF, so you
have to put the Dip 2 and 4 at Off and Dip 1 and 3 at On. It is possible to give different settings to the two fibers.
The connector of the fiber optic must be ST model; the fiber type must be a Multi-Modal fiber of 62.5/125
µ
m. The maximum lenght of the
fiber must be 2000 m (1.24 miles).
The data rates of the fiber is the same of copper line (RS232/RS485/USB).
Is strictly prohibited to set all dip at ON or OFF position. The change must be made when the device is OFF.
