Acromag IP470 Digital input/output module with 48 bi-directional input/output channels, TTL-compatible open-drain outputs, interrupt support for each channel
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Introduction
IP470 Industrial I/O Pack (IP) modules provide 48 general-purpose, bidirectional I/O points to economically monitor and control a large quantity of digital devices. Each channel has interrupt capability for detecting low-to-high or high-to-low transitions. Change-of-state interrupts are suppor ted using paired channels. Debounce eliminates interrupts from noise and switching transients for error-free edge detection. IP470 outputs are full-featured. They have socketed pull-ups and provide closed-loop readback status monitoring. TTL level thresholds and 15mA sink capability allow a direct interface to standard relay racks. And for safety, outputs go to a failsafe state upon power-up/reset without any instantaneous toggling to prevent false alarms.