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.
The BECKHOFF ERI2809-0021 is an IP67-rated digital output module built in a heavy-duty zinc die-cast housing. Operating as an IO-Link device under the Class B specification, this module enables the connection of up to 16 digital outputs directly in the field, eliminating the need for protective control cabinets in demanding industrial environments.
This module processes output signals with a nominal voltage of 24 V DC and is designed to actuate ohmic, inductive, and lamp loads. Each output channel on the BECKHOFF ERI2809-0021 is individually protected against short circuits, preventing localized faults from disrupting the entire system. System data and control logic are transmitted via a high-speed IO-Link interface using COM 3 data transfer rates.
The zinc die-cast construction provides excellent mechanical resistance to impact, vibration, and moisture. Electrical isolation between the control logic power supply and the auxiliary load supply ensures stable operation and outstanding noise immunity during high-load switching operations.
| Manufacturer | BECKHOFF |
| Model | ERI2809-0021 |
| Product Type | IO-Link Box Digital Output Module |
| Housing Material | Zinc die-cast |
| Protection Class | IP65, IP66, IP67 (conforms to EN 60529) |
| Nominal Output Voltage | 24 V DC (-15% / +20%) |
| Max. Output Current | 0.5 A per channel (individually short-circuit proof, total sum max. 4 A) |
| Short-Circuit Current | typ. 1.5 A |
| Current Consumption (L+) | typ. 100 mA |
| Auxiliary Power Current | typ. 20 mA + load |
| Electrical Isolation | L+ / P24: Yes |
| Load Type | Ohmic, inductive, lamp load |
| Interface Type | IO-Link Class B |
| Specification Version | IO-Link V1.1 |
| Data Transfer Rate | 230.4 kbaud (COM 3) |
| Connection Type | 1 x M12 plug, A-coded |
| Dimensions (W x H x D) | 60 mm x 126 mm x 26.5 mm |
| Weight | approx. 450 g | -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 |
| Interface / Connection | Function |
|---|---|
| M12 Plug (A-coded) | IO-Link Class B interface and power supply (L+) |
| 16 x M8 Sockets | Digital output channel connections (screw-type) |
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The BECKHOFF ERI2809-0021 is an IP67-rated digital output module built in a heavy-duty zinc die-cast housing. Operating as an IO-Link device under the Class B specification, this module enables the connection of up to 16 digital outputs directly in the field, eliminating the need for protective control cabinets in demanding industrial environments.
This module processes output signals with a nominal voltage of 24 V DC and is designed to actuate ohmic, inductive, and lamp loads. Each output channel on the BECKHOFF ERI2809-0021 is individually protected against short circuits, preventing localized faults from disrupting the entire system. System data and control logic are transmitted via a high-speed IO-Link interface using COM 3 data transfer rates.
The zinc die-cast construction provides excellent mechanical resistance to impact, vibration, and moisture. Electrical isolation between the control logic power supply and the auxiliary load supply ensures stable operation and outstanding noise immunity during high-load switching operations.
| Manufacturer | BECKHOFF |
| Model | ERI2809-0021 |
| Product Type | IO-Link Box Digital Output Module |
| Housing Material | Zinc die-cast |
| Protection Class | IP65, IP66, IP67 (conforms to EN 60529) |
| Nominal Output Voltage | 24 V DC (-15% / +20%) |
| Max. Output Current | 0.5 A per channel (individually short-circuit proof, total sum max. 4 A) |
| Short-Circuit Current | typ. 1.5 A |
| Current Consumption (L+) | typ. 100 mA |
| Auxiliary Power Current | typ. 20 mA + load |
| Electrical Isolation | L+ / P24: Yes |
| Load Type | Ohmic, inductive, lamp load |
| Interface Type | IO-Link Class B |
| Specification Version | IO-Link V1.1 |
| Data Transfer Rate | 230.4 kbaud (COM 3) |
| Connection Type | 1 x M12 plug, A-coded |
| Dimensions (W x H x D) | 60 mm x 126 mm x 26.5 mm |
| Weight | approx. 450 g | -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 |
| Interface / Connection | Function |
|---|---|
| M12 Plug (A-coded) | IO-Link Class B interface and power supply (L+) |
| 16 x M8 Sockets | Digital output channel connections (screw-type) |
Global Express Shipping
Returns & Warranty
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| Country of origin |
Germany
|