Metso Automation MAX Controls Inc. • 277596 •
Chapter 7
Digital Input Modules
24V Common Input Module IOP330
48V Common Input Module IOP331
Overview
These modules feature 16 digital common inputs.
LED Indication
Individual red front-panel LEDs provide the input status indication for each
channel. A green LED, labeled Active at the bottom of the module front
panel, is on when system power is present and the module is communicating
with the DPU. This LED blinks on and off when the module is not being
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