IP470A: Digital Output Module, TTL Level

IP470A: Digital Output Module, TTL Level Description

Each channel has interrupt capability for detecting low-to-high or high-to-low transitions. Change-of-state interrupts are supported using paired channels. Debounce eliminates interrupts from noise and switching transients for error-free edge detection.

IP470A 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.

The IP470A is a drop-in replacement for the IP470, please see the known differences document below for more information.
Known Differences Between the IP470 and the IP470A

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IP470A: Digital Output Module, TTL Level Features & Benefits

• Output readback capability eliminates the need for additional input channels to verify the output channel state.
• Pinouts are compatible with industry-standard isolated I/O racks.
• Output channels do not “glitch” after a power-up/reset to eliminate false alarms.
• 48 bidirectional input/output channels
• TTL-compatible inputs
• CMOS-compatible open-drain outputs
• Interrupt support for each channel
• Input debounce
• Electronic overvoltage protection on individual channels
• Open drain outputs with socketed pull-ups
• Output readback registers
• 0 to 70°C (IP470) or -40 to 85°C (IP470E model)

Additional information