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 KM1018-0000 is a high-density Bus Terminal module designed to accommodate 64 digital inputs within a compact housing. Operating at a nominal voltage of 24 V DC, this module acts as a space-saving interface within the Beckhoff I/O system, transmitting electrically isolated signals directly to higher-level automation units via the K-bus. By integrating 64 channels into a single physical unit, it significantly reduces control cabinet space requirements while maintaining accurate signal acquisition.
As the base configuration variant (-0000), the BECKHOFF KM1018-0000 is delivered without pluggable front connector blocks. This design enables system engineers to choose the appropriate wiring technology for their installation, including 1-wire or 3-wire plug-in connector strips with or without diagnostic status LEDs. The physical assembly mounts directly to standard DIN rails and interlocks with adjacent terminals for structural and electrical stability.
| Model Variant | Description |
|---|---|
| KM1018-0000 | 64-channel digital input module, 24 V DC, 0.2 ms filter, without connector blocks |
| KM1018-0001 | 64-channel digital input module, 24 V DC, 0.2 ms filter, includes 1-wire connectors |
| KM1018-0002 | 64-channel digital input module, 24 V DC, 0.2 ms filter, includes 1-wire connectors with status LEDs |
| KM1018-0004 | 64-channel digital input module, 24 V DC, 0.2 ms filter, includes 3-wire connectors with status LEDs |
| Parameter | Specification |
|---|---|
| Manufacturer | BECKHOFF |
| Model Number | KM1018-0000 |
| Product Type | Bus Terminal Module |
| Number of Inputs | 64 (8 x 8) |
| Design Form | Compact terminal module with pluggable wiring level |
| Dimensions (W x H x D) | 123 mm x 100 mm x 55 mm |
| Mounting | 35 mm DIN rail (conforming to EN 60715) with lock |
| Permissible Conductor Sizes | 0.08 to 1.5 mm² (stranded or solid wire) |
| Stripping Length | 8 mm |
| Parameter | Specification |
|---|---|
| Nominal Voltage | 24 V DC (-15% / +20%) |
| "0" Signal Voltage | -3 to +5 V (conforming to EN 61131-2, type 1) |
| "1" Signal Voltage | 15 to 30 V (conforming to EN 61131-2, type 1) |
| Input Filter Time | typ. 0.2 ms |
| Input Current | typ. 5 mA |
| Current Consumption K-Bus | typ. 3 mA |
| Electrical Isolation | 500 V (K-bus to field potential) |
| Process Image Bit Width | 64 inputs |
| Parameter | Specification |
|---|---|
| Operating Temperature | 0 to +55 Celsius |
| Storage Temperature | -25 to +85 Celsius |
| Relative Humidity | 95%, non-condensing |
| 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 Class | IP20 |
| Approvals | CE |
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Returns & Warranty

The BECKHOFF KM1018-0000 is a high-density Bus Terminal module designed to accommodate 64 digital inputs within a compact housing. Operating at a nominal voltage of 24 V DC, this module acts as a space-saving interface within the Beckhoff I/O system, transmitting electrically isolated signals directly to higher-level automation units via the K-bus. By integrating 64 channels into a single physical unit, it significantly reduces control cabinet space requirements while maintaining accurate signal acquisition.
As the base configuration variant (-0000), the BECKHOFF KM1018-0000 is delivered without pluggable front connector blocks. This design enables system engineers to choose the appropriate wiring technology for their installation, including 1-wire or 3-wire plug-in connector strips with or without diagnostic status LEDs. The physical assembly mounts directly to standard DIN rails and interlocks with adjacent terminals for structural and electrical stability.
| Model Variant | Description |
|---|---|
| KM1018-0000 | 64-channel digital input module, 24 V DC, 0.2 ms filter, without connector blocks |
| KM1018-0001 | 64-channel digital input module, 24 V DC, 0.2 ms filter, includes 1-wire connectors |
| KM1018-0002 | 64-channel digital input module, 24 V DC, 0.2 ms filter, includes 1-wire connectors with status LEDs |
| KM1018-0004 | 64-channel digital input module, 24 V DC, 0.2 ms filter, includes 3-wire connectors with status LEDs |
| Parameter | Specification |
|---|---|
| Manufacturer | BECKHOFF |
| Model Number | KM1018-0000 |
| Product Type | Bus Terminal Module |
| Number of Inputs | 64 (8 x 8) |
| Design Form | Compact terminal module with pluggable wiring level |
| Dimensions (W x H x D) | 123 mm x 100 mm x 55 mm |
| Mounting | 35 mm DIN rail (conforming to EN 60715) with lock |
| Permissible Conductor Sizes | 0.08 to 1.5 mm² (stranded or solid wire) |
| Stripping Length | 8 mm |
| Parameter | Specification |
|---|---|
| Nominal Voltage | 24 V DC (-15% / +20%) |
| "0" Signal Voltage | -3 to +5 V (conforming to EN 61131-2, type 1) |
| "1" Signal Voltage | 15 to 30 V (conforming to EN 61131-2, type 1) |
| Input Filter Time | typ. 0.2 ms |
| Input Current | typ. 5 mA |
| Current Consumption K-Bus | typ. 3 mA |
| Electrical Isolation | 500 V (K-bus to field potential) |
| Process Image Bit Width | 64 inputs |
| Parameter | Specification |
|---|---|
| Operating Temperature | 0 to +55 Celsius |
| Storage Temperature | -25 to +85 Celsius |
| Relative Humidity | 95%, non-condensing |
| 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 Class | IP20 |
| Approvals | CE |
Global Express Shipping
Returns & Warranty
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| Country of origin |
Germany
|