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The Siemens 6ES7 323‑1BL00‑0AA0 is a combined digital input and output module for the SIMATIC S7‑300 PLC system, providing 16 isolated digital inputs and 16 isolated digital outputs in a single compact module, ideal for reducing rack space while maintaining robust 24 VDC field device control in industrial automation applications. Manufacturer: Siemens Product Line: SIMATIC S7‑300 Module Designation: SM 323 Catalog Number: 6ES7 323‑1BL00‑0AA0 Module Type: Digital Combination I/O Module PLC System Compatibility: SIMATIC S7‑300 Input Type: Digital, DC Output Type: Digital, DC Number of Digital Inputs: 16 Number of Digital Outputs: 16 Input Voltage Rating: 24 VDC Input Voltage Range: 20.4 to 28.8 VDC Input Current per Channel: Approx. 6 mA at 24 VDC Output Voltage Rating: 24 VDC Maximum Output Current per Channel: 0.5 A Total Output Current per Group: 4 A Load Type: Resistive and inductive (with external suppression) Input Isolation: Electrically isolated input groups Output Isolation: Electrically isolated outputs Connection Type: 1 × 40‑pole front connector Front Connector Style: 40‑pin terminal block Backplane Connection: S7‑300 bus connector Supply Voltage: Provided via S7‑300 backplane Current Consumption from Backplane: System‑dependent Diagnostics: LED indicators for input and output status Response Time Inputs: Typical 3 ms Response Time Outputs: Typical a few milliseconds Mounting Type: DIN rail mounting (S7‑300 rack system) Housing Material: Industrial thermoplastic Module Color: SIMATIC S7 dark gray Protection Class: IP20 Operating Temperature: 0 to 60 °C (32 to 140 °F) Storage Temperature: –40 to 70 °C (–40 to 158 °F) Relative Humidity: Up to 95% non‑condensing Certifications: CE marked, UL Listed, CSA Certified Typical Applications: Sensors, pushbuttons, solenoids, relays, actuators Product Status: Discontinued / legacy S7‑300 module Country of Manufacture: Germany Please review pictures carefully and let us know if you have any questions!
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