with a current limiting per channel. If required, the output
driver can send an interrupt on overload to the PC.
A suitable external source is required to supply the output driv-
ers.
Frequency measurement: With the concept of “configurable
subdevices” the subdevice 0 can also be used as a frequency
counter. Four independent channels are available to measure
the frequency and duty cycle of periodic rectangular signals
(max. 5.5 MHz). 4 further channels can be added using the
plug-on board ME-5002.
Pulse generator: With the concept of “configurable subde-
vices” the subdevice 1 can also be used as a rectangular signal
generator. Four independent channels are available to output a
periodic rectangular signal up to 5.5 MHz with selectable duty
cycle. 4 further channels can be added using the plug-on board
ME-5002.
Sink/source selection: You can switch the output ports over
from sink to source drivers or high impedance by software for
an optimal adaption in industrial applications. “High impedance”
means that the voltage level at the output pin depends on your
external application.
Bit-pattern detection: If required, the bit-pattern at the digital
input port can be monitored. Depending on the mode an inter-
rupt can be generated, if the bit-pattern changes or is
equal/not equal to a given bit-pattern. In streaming mode bit-
pattern detection can be used to control the input/output oper-
ation depending on the selected operating mode (no interrupt
operation).
The isolation voltage between the opto-isolated inputs/outputs
and PC-ground is 1 kVAC
RMS
.
The opto-isolated digital inputs of the ME-5810 and ME-5002
are equipped with an overvoltage protection diode that can dis-
charge voltage pulses to ground for a short period of time.
Depending on your application you can select between these oper-
ating modes:
Single: In this mode a single value can be read or written under
software control (see chapter 4.1.1 on page 29).
Streaming (“S”-versions only): In this mode data I/O makes use
of the FIFO, either under timer control and/or controlled by ex-
ternal trigger signals. Various trigger options are available that
can be defined as start and stop conditions. Subdevice 0 is de-
fined as a 16-bit input port and subdevice 1 as a 16
-
bit output
port (see chapter 2.1 on page 11).
