I/O Modules
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ADAM 4000 Series User’s Manual
3.20 ADAM-4080/4080D Counter/Frequency Input Modules
ADAM-4080/4080D Counter/frequency input module has two 32-
bit counter input channels (counter 0 and counter 1) with built-in
programmable timer for frequency measurement. These cost-effective
modules let you monitor counter/frequency data as measurements are
taken.
Front Panel LED Indicator (ADAM-4080D only)
The 5-digit LED display of the ADAM-4080D lets you monitor its
counter data right at the source. The module's LED display shows
counter values as well as high-low alarm messages when the counter
exceeds its programmed limits (direct display).
Another option is to display the data sent by the host computer. The
module first sends counter data to the host computer for conversion or
calculation. The host computer then sends the data back to the ADAM-
4080D and displays on the module's LED display (remote display).
Signal Input Mode
The ADAM-4080/4080D provides separate terminals for photo
isolated input and non-isolated input to simplify the wiring. Opto-
isolated input provides 2500 VRMS isolation to protect your equipment
from power surges at the ground terminal. After you make the physical
connections, program the module to identify which of its two input
terminals should be activated (isolated or non-isolated terminals).
Programmable Digital Filter
The ADAM-4080/4080D module includes a unique programmable
digital filter to reject noise from the input lines. You can specify
separate time constant like minimum signal width at high level and
minimum signal width at low level. This provides stable output
readings.
Programmable Threshold
When the ADAM-4080/4080D is programmed for non-isolated
input, you can set a high and low trigger level. Like the programmable
digital filter, the programmable threshold rejects noise from the input
lines and provides a stable input readings