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.
Industrial processing systems utilize the BECKHOFF KS3444 analog input bus terminal to interface standard 0 to 20 mA signals directly from the field level to the higher-level automation controller. This four-channel module features single-ended inputs and provides a highly space-efficient design with a pluggable wiring level, enabling fast, tool-free installation and maintenance. By operating directly through the standard K-bus, the unit transmits digitized process values back to the coupler or controller with a 12-bit resolution. Integrated electrical isolation of 500 V between the K-bus and the signal channels guarantees high noise immunity and signal integrity in demanding electrical environments.
| Manufacturer | BECKHOFF | KS3444 |
| Product Type | Bus Terminal (Pluggable wiring level) | 4 |
| Signal Current | 0 to 20 mA | Single-ended |
| Internal Resistance | < 85 Ohm | 12 bit |
| Conversion Time | approx. 2 ms | < ±0.3 % (relative to full scale value) |
| Surge Voltage Resistance | 30 V DC | 500 V (K-bus/signal voltage) |
| Current Consumption K-Bus | typ. 85 mA | Input: 4 x 16 bit data (4 x 8 bit control/status optional) |
| Housing Material | Polycarbonate | IP20 / variable |
| Operating Temperature | 0 to +55 degC | -25 to +85 degC |
| Relative Humidity | 95 %, non-condensing | Conforms to EN 60068-2-6 / EN 60068-2-27 |
| EMC Immunity/Emission | Conforms to EN 61000-6-2 / EN 61000-6-4 | 35 mm DIN rail (EN 60715) with lock |
| Connection Cross-section | Solid/Stranded: 0.08 to 1.5 mm²; Fine-wire: 0.14 to 1.5 mm² | AWG 28 to 16 (Solid/Stranded); AWG 26 to 16 (Fine-wire) |
| Stripping Length | 9 to 10 mm | 12 mm x 100 mm x 68 mm |
| Weight | 0.055 kg | II 3 G Ex nA IIC T4 Gc |
| Connection Point | Signal Assignment |
|---|---|
| Terminal 1 | Input 1 (+) |
| Terminal 2 | Input 2 (+) |
| Terminal 3 | Input 3 (+) |
| Terminal 4 | Input 4 (+) |
| Terminal 5 | Input 1 (0 V) |
| Terminal 6 | Input 2 (0 V) |
| Terminal 7 | Input 3 (0 V) |
| Terminal 8 | Input 4 (0 V) |
Global Express Shipping
Returns & Warranty

Industrial processing systems utilize the BECKHOFF KS3444 analog input bus terminal to interface standard 0 to 20 mA signals directly from the field level to the higher-level automation controller. This four-channel module features single-ended inputs and provides a highly space-efficient design with a pluggable wiring level, enabling fast, tool-free installation and maintenance. By operating directly through the standard K-bus, the unit transmits digitized process values back to the coupler or controller with a 12-bit resolution. Integrated electrical isolation of 500 V between the K-bus and the signal channels guarantees high noise immunity and signal integrity in demanding electrical environments.
| Manufacturer | BECKHOFF | KS3444 |
| Product Type | Bus Terminal (Pluggable wiring level) | 4 |
| Signal Current | 0 to 20 mA | Single-ended |
| Internal Resistance | < 85 Ohm | 12 bit |
| Conversion Time | approx. 2 ms | < ±0.3 % (relative to full scale value) |
| Surge Voltage Resistance | 30 V DC | 500 V (K-bus/signal voltage) |
| Current Consumption K-Bus | typ. 85 mA | Input: 4 x 16 bit data (4 x 8 bit control/status optional) |
| Housing Material | Polycarbonate | IP20 / variable |
| Operating Temperature | 0 to +55 degC | -25 to +85 degC |
| Relative Humidity | 95 %, non-condensing | Conforms to EN 60068-2-6 / EN 60068-2-27 |
| EMC Immunity/Emission | Conforms to EN 61000-6-2 / EN 61000-6-4 | 35 mm DIN rail (EN 60715) with lock |
| Connection Cross-section | Solid/Stranded: 0.08 to 1.5 mm²; Fine-wire: 0.14 to 1.5 mm² | AWG 28 to 16 (Solid/Stranded); AWG 26 to 16 (Fine-wire) |
| Stripping Length | 9 to 10 mm | 12 mm x 100 mm x 68 mm |
| Weight | 0.055 kg | II 3 G Ex nA IIC T4 Gc |
| Connection Point | Signal Assignment |
|---|---|
| Terminal 1 | Input 1 (+) |
| Terminal 2 | Input 2 (+) |
| Terminal 3 | Input 3 (+) |
| Terminal 4 | Input 4 (+) |
| Terminal 5 | Input 1 (0 V) |
| Terminal 6 | Input 2 (0 V) |
| Terminal 7 | Input 3 (0 V) |
| Terminal 8 | Input 4 (0 V) |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Germany
|