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.
Directly integrating Standard Motor Interface drives into the modular K-bus terminal system, the Beckhoff KL6831 enables high-precision coordination of up to 16 SMI LoVo actuators. This single-channel terminal serves as a dedicated communication gateway, facilitating bilateral data transfer between the control processor and intelligent roller shutter or solar protection drives. Operating on the low-voltage SMI LoVo physical layer, the Beckhoff KL6831 minimizes system wiring overhead and bridges the field level directly to the controller process image using 24-byte input and output maps. Additionally, the integration of local hardware inputs permits commissioning sequences prior to network software configuration.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model Number | KL6831 |
| Product Type | SMI Bus Terminal (LoVo) |
| Number of Channels | 1 |
| Supported SMI Slaves | Maximum 16 |
| Data Transfer Rate | 2400 baud |
| SMI Bus Topology | Line topology |
| Maximum Cable Length | 200 m |
| Process Image Width | 24 Byte input / 24 Byte output |
| Nominal Input Voltage | 24 V DC (-15% / +20%) |
| Current Consumption (K-bus) | Typically 55 mA |
| Electrical Isolation | 500 V (K-bus to SMI-bus) |
| Insulation Voltage | 1500 V DC (SMI to K-bus); 1500 V AC (SMI to Power Contacts) |
| Protection Rating | IP20 |
| Operating Temperature | 0 to +55 degC |
| Storage Temperature | -25 to +85 degC |
| Relative Humidity | 95% non-condensing |
| Country of Origin | Germany |
| Shipping Weight (Calculated) | 0.15 kg |
| Package Dimensions (Calculated) | 120 mm x 80 mm x 25 mm |
| Terminal Point | Signal Assignment | Description |
|---|---|---|
| 1 | SMI I+ | SMI Bus positive connection |
| 2 | SMI I- | SMI Bus negative connection |
| 3 | Input 1 | Digital input 1 (24 V DC) for local actuator commissioning |
| 4 | Input 2 | Digital input 2 (24 V DC) for local actuator commissioning |
| 5 | 24 V DC | SMI external supply input (positive contact) |
| 6 | 0 V | SMI external supply input (ground contact) |
The KL6831 is specifically built for 24 V DC SMI LoVo standard actuators. If your installation utilizes standard line-voltage (230 V AC) SMI actuators, you must deploy the alternative KL6832 module to prevent irreversible hardware damage. Both terminals share the same TwinCAT PLC library blocks, allowing straightforward porting of PLC application code between 24 V and 230 V architectures.
While the theoretical SMI bus limit is 200 meters, signal integrity degrades in high-EMI environments when run parallel to medium-voltage power lines. Always route the SMI communication pairs in shielded, twisted-pair cables. To avoid voltage dropouts across LoVo lines, recalculate the supply wire cross-section based on the cumulative peak inrush currents of all 16 connected drives during simultaneous startup cycles.
The integrated digital inputs 1 and 2 allow commissioning personnel to drive the SMI actuators up and down directly at the terminal strip before configuring the TwinCAT software or mapping the bus coupler. This minimizes on-site commissioning timelines by isolating physical wiring faults from PLC code issues. Ensure the 24 V DC power contacts are correctly linked via the adjacent terminal power feed-in points.
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Directly integrating Standard Motor Interface drives into the modular K-bus terminal system, the Beckhoff KL6831 enables high-precision coordination of up to 16 SMI LoVo actuators. This single-channel terminal serves as a dedicated communication gateway, facilitating bilateral data transfer between the control processor and intelligent roller shutter or solar protection drives. Operating on the low-voltage SMI LoVo physical layer, the Beckhoff KL6831 minimizes system wiring overhead and bridges the field level directly to the controller process image using 24-byte input and output maps. Additionally, the integration of local hardware inputs permits commissioning sequences prior to network software configuration.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model Number | KL6831 |
| Product Type | SMI Bus Terminal (LoVo) |
| Number of Channels | 1 |
| Supported SMI Slaves | Maximum 16 |
| Data Transfer Rate | 2400 baud |
| SMI Bus Topology | Line topology |
| Maximum Cable Length | 200 m |
| Process Image Width | 24 Byte input / 24 Byte output |
| Nominal Input Voltage | 24 V DC (-15% / +20%) |
| Current Consumption (K-bus) | Typically 55 mA |
| Electrical Isolation | 500 V (K-bus to SMI-bus) |
| Insulation Voltage | 1500 V DC (SMI to K-bus); 1500 V AC (SMI to Power Contacts) |
| Protection Rating | IP20 |
| Operating Temperature | 0 to +55 degC |
| Storage Temperature | -25 to +85 degC |
| Relative Humidity | 95% non-condensing |
| Country of Origin | Germany |
| Shipping Weight (Calculated) | 0.15 kg |
| Package Dimensions (Calculated) | 120 mm x 80 mm x 25 mm |
| Terminal Point | Signal Assignment | Description |
|---|---|---|
| 1 | SMI I+ | SMI Bus positive connection |
| 2 | SMI I- | SMI Bus negative connection |
| 3 | Input 1 | Digital input 1 (24 V DC) for local actuator commissioning |
| 4 | Input 2 | Digital input 2 (24 V DC) for local actuator commissioning |
| 5 | 24 V DC | SMI external supply input (positive contact) |
| 6 | 0 V | SMI external supply input (ground contact) |
The KL6831 is specifically built for 24 V DC SMI LoVo standard actuators. If your installation utilizes standard line-voltage (230 V AC) SMI actuators, you must deploy the alternative KL6832 module to prevent irreversible hardware damage. Both terminals share the same TwinCAT PLC library blocks, allowing straightforward porting of PLC application code between 24 V and 230 V architectures.
While the theoretical SMI bus limit is 200 meters, signal integrity degrades in high-EMI environments when run parallel to medium-voltage power lines. Always route the SMI communication pairs in shielded, twisted-pair cables. To avoid voltage dropouts across LoVo lines, recalculate the supply wire cross-section based on the cumulative peak inrush currents of all 16 connected drives during simultaneous startup cycles.
The integrated digital inputs 1 and 2 allow commissioning personnel to drive the SMI actuators up and down directly at the terminal strip before configuring the TwinCAT software or mapping the bus coupler. This minimizes on-site commissioning timelines by isolating physical wiring faults from PLC code issues. Ensure the 24 V DC power contacts are correctly linked via the adjacent terminal power feed-in points.
Global Express Shipping
Returns & Warranty
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| Country of origin |
Germany
|