DIGITAL INPUT TEST MODULE
40 G4 Family Data Book
Schematics—AC Input Modules
Digital Input Test Module
Description
Opto 22’s G4SWIN input test module is used to simulate an input on an I/O mounting
rack. Each module contains a toggle switch that closes a contact on the logic side of
the module. An internal resistor limits the current through the switch and provides a
load similar to that of an actual input module. An internal debounce circuit allows rapid
switch closures without false counts.
The G4SWIN module works with logic voltages of 5, 15, and 24 volts. Internally, there
is no connection to the field inputs. A built-in LED indicates the simulated on/off status.
This module is ideal for simulating discrete external events when testing application
software.
Specifications
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