7.6.3.4 Standard digital modes (PWM, frequency, digital, counter)
General
U
max
32V
Low
<0,99V
High
>2,31V
Load
10k086
PWM
Measurement
range
1...99%
f
max
100Hz
Minimum pulse
length
1ms
Frequency
Measurement
range
1...1000Hz
Counter
Minimum pulse
length
1ms
7.6.4 Technical details about the PT100/1000 interface
The interface for the external temperature sensor automatically detects whether a PT100 or PT1000 is being
used. It is also possible to use three- or two-wire sensors. An additional link is required on two-wire sensors
(see "PT100/PT1000 2-wire" on page 66).
PT100/PT1000 3-wire
PT100/PT1000 2-wire
7.6.5 Technical details about the RS485 interface
Note:
l
The RS485 interface corresponds to standard EIA-485.
l
The RS485 interface is only available if the universal inputs 3 and 4 are not being used.
The RS485 interface of the myDatalogEASY V3 includes an input common mode range that covers the full
area specified for RS485 (-7V...+12V). Higher voltages damage the interface. Differential signals of more
than +/-200mV within the specified input common mode range are detected correctly. In send mode, the
output signal is in the range of 1,5...3,3V .
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