| Product Type | S7-300 Digital Extension |
| Product Model | 6ES7326-2BF41-0AB0 |
| Supply Voltage Type | DC |
| Product Dimensions | 80 MM × 125 MM × 120 MM |
| Input current | Incoming power supply voltage 1L+, maximum value 75mA Self load voltage 2L+(no-load), maximum value 100 mA Incoming load voltage 3L+(no-load), maximum value 100 mA Incoming backplane bus DC 5 V, maximum value 100 mA |
| Weight | 465 g |
High-Performance DI/DO Mixed Signal Module for S7-300 Series: Model SM 326 DI16/DO16 (6ES7326-2BF41-0AB0), a compact mixed I/O module in the SIMATIC S7-300 PLC system—integrates 16 digital inputs and 16 digital outputs in one unit, ideal for space-constrained applications requiring balanced I/O capability.
Integrated Design, Space-Saving:Combines 16 digital inputs and 16 outputs in a single module—occupies only one S7-300 slot.Reduces module count and rack space usage, optimizes control panel layout, and lowers overall system cost.
Input Characteristics (DI):Supports 24 V DC PNP-type inputs (high-side active), compatible with standard industrial sensors such as proximity switches, pushbuttons, and limit switches.Each channel has an LED indicator for real-time status monitoring.Typical input delay < 1.5 ms, ensuring fast response.
Output Characteristics (DO):16 transistor outputs (NPN type, sink output), supporting 24 V DC loads with max current of 0.5 A per channel.Suitable for driving relays, solenoid valves, indicator lights, and small motors.Not suitable for direct AC load or high-power device control (requires external relay).
Galvanic Isolation:Provides electrical isolation between inputs and outputs, and between I/O and backplane bus—effectively preventing interference propagation and enhancing system reliability and safety.
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