Installation OZD Profi 12M ...
Release
01
07/2017
53
Figure 9: Correlation of measured output voltage to signal quality
Note: For a measured value to be valid, it is necessary that the partner OZD
Profi 12M ... on the other end of the optical fiber transmits regular PROFIBUS
telegrams. An OZD Profi 12M ... is no substitute for a calibrated, optical level
meter. However, it provides each optical port with a voltage derived from the
peak value of the optical PROFIBUS telegram without disrupting the
communication of data. With regular bus operation, this analog voltage can
be used as an indicator for an alteration in optical attenuation. Because data
traffic and temperature can affect the voltage value, you should not set any
warning threshold too close to the actual value.
Signal
output
voltage
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