The 24Vdc Positive/Negative Logic 16-Point Input module, IC694MDL646, provides sixteen input points in one group with a common power inputterminal. The on and off response times for this module are typically 1 ms.This input module can be wired for either positive logic or negative logic.Input characteristics are compatible with a wide range of input devices,such as pushbuttons, limit switches, and electronic proximity switches.Current passing into an input point results in a logic 1 in the input statustable (%I).Field devices can be powered from an external supply. Depending on theirrequirements, some input devices can be powered from the +24 V OUT and0V OUT terminals of the module.Sixteen green LEDs indicate the ON/OFF status of points 1 through 16. Theblue bands on the label show that MDL646 is a low-voltage module.This module can be installed in any I/O slot in an RX3i system.Module supports insertion into and removal from an RX3i Universal Backplane which is under power.