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In quiescent condition the clock and data lines are "high" The current measured
value is stored with the first falling clock edge Data transfer begins with the first
rising clock edge
After transfer of a complete data word the data output remains low during the
time t2, only then is the encoder ready to transmit the next measured value If
during this time there is a new request for data output (clock), the data which have
already been provided are provided again
In this case the data output is "low" between LSB (Least Significant Bit) of the first
transfer and MSB (Most Significant Bit) of the second transfer
UK
If the data output is interrupted ( (
t2), a new measured value is stored with the
≤
next clock edge The external electronics reads the data with the rising clock edge
6.1.3 Level of the control inputs
When the control inputs Reset to zero and Reversal of the direction of rotation are
used, the following requirements for the signal levels have to be adhered to:
not active: LOW < 025 x U
/ active: HIGH > 06 x U
b
b
Switching time: min > 1 ms
Reversal of direction of rotation
By permanent application of a high level to the red wire / pin 8, the direction of
rotation for increasing position values is reversed
Reset to zero
To use the function Reset to zero, the shaft has to be stopped A reset to zero
when the shaft is rotating can lead to incorrect position values The current
position value is reset to zero if a positive edge is applied to the blue wire / pin 7
for at least 1 ms
7 Maintenance, repair, disposal
The operation of the unit is maintenance-free It is not possible to repair the unit
After use dispose of the unit in an environmentally friendly way in accordance with
the applicable national regulations
Technical data and further information at
wwwifmcom
7
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