83 ADAM-4000 Series User Manual
Chapter 3 I/O Modules
Channels: 2 independent 32-bit counters (counter 0 and counter 1)
Input frequency: 50 kHz max.
Input mode: Isolated or non-isolated
Protocol: ASCII, Modbus/RTU (E version)
Isolation input level:
- Logic level 0: +1 V max
- Logic level 1: +3.5 V to +30 V
- Gate Logic level 0: the same as the setting of Logic level 0
- Gate Logic level 1: the same as the setting of Logic level 1
- Input Impedance: 1.2 k, 1k (E version)
Non-isolation input level (programmable threshold):
- Logic level 0: 0 to 0.8V (default = 0.8 V)
- Logic level 1: 2.4 to 5V (default = 2.4 V)
- Gate Logic level 0: 0.8 V max
- Gate Logic level 1: 2.4 to 5V
- Input Impedance: 50 M, 2.5M (E version)
Digital Output:
- Channels: 2, open collector to 30 V, 30 mA max. load
3.21.2 ADAM-4080D Counter/Frequency Input Modules with LED
Display
Figure 3.76 ADAM-4080D Counter/Frequency Input Module with LED Display
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