Implementing 3-Switch XOR Ladder Logic with Internal Bit
Implement a 3-SPST switch XOR light circuit in LogixPro or RSLogix 500 using an internal relay bit. Includes truth tables, boolean equations, and verified.
Designed for decentralized field acquisition of binary signals, the EPI1809-0021 IO-Link module facilitates the integration of up to 16 digital inputs directly within demanding industrial environments. This compact IO-Link box acts as an efficient bridge between physical sensors and higher-level control networks, utilizing an M12 A-coded connection for communication and power.
The module is built with an extremely robust IP67-rated housing, making it highly resistant to wet, dusty, and high-vibration environments. It operates using the IO-Link V1.1 specification at high-speed COM3 transmission rates, offering adjustable input filtering and short-circuit proof sensor power distribution to ensure accurate data capture and robust operational safety.
| Manufacturer | Beckhoff |
| Part Number/Model | EPI1809-0021 |
| Protocol / Interface | IO-Link |
| Specification Version | IO-Link V1.1, Class A |
| Data Transfer Rate | 230.4 kbaud (COM 3) |
| Number of Inputs | 16 digital inputs |
| Input Connection Type | M8, screw type |
| Nominal Input Voltage | 24 V DC (-15% / +20%) |
| Input Filter | 3.0 ms (default), adjustable 0 to 20 ms |
| "0" Signal Voltage Range | -3 to +5 V (EN 61131-2, type 3) |
| "1" Signal Voltage Range | 11 to 30 V (EN 61131-2, type 3) |
| Input Current | Typical 3 mA (EN 61131-2, type 3) |
| Sensor Power Supply | Max. 0.5 A from L+ (total, short-circuit proof) |
| Current Consumption | Typical 100 mA from L+ |
| Operating Temperature | -25 to +60 degC |
| Storage Temperature | -40 to +85 degC |
| Vibration / Shock Resistance | Conforms to EN 60068-2-6 / EN 60068-2-27 |
| EMC Immunity / Emission | Conforms to EN 61000-6-2 / EN 61000-6-4 |
| Protection Rating | IP65 / IP66 / IP67 (conforms to EN 60529) |
| Weight | Approx. 250 g |
| Interface Type | Connector Style | Specification |
|---|---|---|
| IO-Link / Power | 1 x M12 plug | A-coded |
| Digital Inputs (1-16) | M8 female connectors | Screw-type, secure locking |
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Returns & Warranty

Designed for decentralized field acquisition of binary signals, the EPI1809-0021 IO-Link module facilitates the integration of up to 16 digital inputs directly within demanding industrial environments. This compact IO-Link box acts as an efficient bridge between physical sensors and higher-level control networks, utilizing an M12 A-coded connection for communication and power.
The module is built with an extremely robust IP67-rated housing, making it highly resistant to wet, dusty, and high-vibration environments. It operates using the IO-Link V1.1 specification at high-speed COM3 transmission rates, offering adjustable input filtering and short-circuit proof sensor power distribution to ensure accurate data capture and robust operational safety.
| Manufacturer | Beckhoff |
| Part Number/Model | EPI1809-0021 |
| Protocol / Interface | IO-Link |
| Specification Version | IO-Link V1.1, Class A |
| Data Transfer Rate | 230.4 kbaud (COM 3) |
| Number of Inputs | 16 digital inputs |
| Input Connection Type | M8, screw type |
| Nominal Input Voltage | 24 V DC (-15% / +20%) |
| Input Filter | 3.0 ms (default), adjustable 0 to 20 ms |
| "0" Signal Voltage Range | -3 to +5 V (EN 61131-2, type 3) |
| "1" Signal Voltage Range | 11 to 30 V (EN 61131-2, type 3) |
| Input Current | Typical 3 mA (EN 61131-2, type 3) |
| Sensor Power Supply | Max. 0.5 A from L+ (total, short-circuit proof) |
| Current Consumption | Typical 100 mA from L+ |
| Operating Temperature | -25 to +60 degC |
| Storage Temperature | -40 to +85 degC |
| Vibration / Shock Resistance | Conforms to EN 60068-2-6 / EN 60068-2-27 |
| EMC Immunity / Emission | Conforms to EN 61000-6-2 / EN 61000-6-4 |
| Protection Rating | IP65 / IP66 / IP67 (conforms to EN 60529) |
| Weight | Approx. 250 g |
| Interface Type | Connector Style | Specification |
|---|---|---|
| IO-Link / Power | 1 x M12 plug | A-coded |
| Digital Inputs (1-16) | M8 female connectors | Screw-type, secure locking |
Global Express Shipping
Returns & Warranty
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| Country of origin |
Germany
|