6ES7321-1BH01-0AA0 SIEMENS digital input module
Description And Features
The Siemens 6ES7321-1BH01-0AA0 is a digital input module designed for the SIMATIC S7-300 series programmable logic controllers (PLCs). This module is part of the
SM 321 family and is optimized for industrial automation applications requiring reliable and efficient digital signal processing.
Frequently Asked Questions About 6ES7321-1BH01-0AA0
Q1: What is the purpose of optical isolation in this module?
Optical isolation ensures that the digital input signals are electrically separated from the PLC's internal circuitry. This feature protects the PLC from
potential damage due to voltage spikes or electrical noise present in the input signals.
Q2: Can this module be used with 2-wire sensors?
Yes, the 6ES7321-1BH01-0AA0 module is compatible with 2-wire sensors. It can handle a maximum quiescent current of 1.5 mA for such sensors.
Q3: What is the maximum cable length supported by this module?
The module supports a maximum cable length of 1,000 meters for shielded cables and 600 meters for unshielded cables, ensuring flexibility in
installation across various distances.
Q4: Are there any diagnostic features available?
The module includes a green LED indicator for each input, providing visual status information. However, it does not support advanced diagnostics
or hardware interrupts.
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