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 high-density signal integration within the Sysmac automation architecture, the Omron NX-ID6142-6 delivers 32 high-speed digital DC input channels in a space-saving slice profile. This industrial module allows for flexible polarity configurations, interfacing seamlessly with both NPN and PNP sensor topologies. Engineered for synchronization with EtherCAT networks, it supports both Synchronous and Free-Run I/O refreshing modes to provide exact time-stamped inputs for high-performance machine control.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Omron |
| Model Number | NX-ID6142-6 |
| Product Series | NX-series Digital I/O Unit |
| Input Type | DC Input (NPN/PNP Compatible) |
| Number of Points | 32 Points |
| Rated Input Voltage | 24 VDC |
| ON/OFF Response Time | Exceeds 1 microsecond |
| I/O Refreshing Method | Free-Run refreshing or Synchronous I/O refreshing |
| External Connection | Fujitsu Connector |
| Module Width | 30 mm (3 cm) |
| Module Dimensions | 100 mm Height x 30 mm Width x 71 mm Depth |
| Net Weight | 0.09 kg |
| Shipping Weight (Calculated) | 1.50 kg (including protective packaging) |
The NX-ID6142-6 utilizes a Fujitsu connector interface, which differs significantly from screwless clamp models. Ensure that matching pre-wired cables (such as Omron's XY3B series) or compatible connector terminal blocks are specified during panel design. It is fully backward compatible with NX-series bus couplers running standard EtherCAT or EtherNet/IP interfaces.
Because this is a high-density 32-point unit, thermal accumulation can occur within closed wire ducts if all 32 inputs are continuously active at 24 VDC. Maintain adequate cooling clearances as outlined in the Sysmac NX-series user manual, and verify that the auxiliary current limit of your internal bus coupler is not exceeded when multiple high-density input blocks are powered from the same segment.
To minimize electrical noise in high-speed applications, always use shielded, twisted-pair cabling for the Fujitsu connector. Ground the cable shields at a single point on the panel's common functional ground bar. Ensure the 24 VDC external power supply has adequate ripple filtering to prevent timing jitter during synchronous cycles.
CRITICAL SAFETY WARNING
De-energize all primary, secondary, and field-side power sources before inserting or removing the module from the DIN rail assembly. Working on live backplanes risks permanent damage to the internal ASIC and can corrupt the EtherCAT network configuration.
Global Express Shipping
Returns & Warranty

Designed for high-density signal integration within the Sysmac automation architecture, the Omron NX-ID6142-6 delivers 32 high-speed digital DC input channels in a space-saving slice profile. This industrial module allows for flexible polarity configurations, interfacing seamlessly with both NPN and PNP sensor topologies. Engineered for synchronization with EtherCAT networks, it supports both Synchronous and Free-Run I/O refreshing modes to provide exact time-stamped inputs for high-performance machine control.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Omron |
| Model Number | NX-ID6142-6 |
| Product Series | NX-series Digital I/O Unit |
| Input Type | DC Input (NPN/PNP Compatible) |
| Number of Points | 32 Points |
| Rated Input Voltage | 24 VDC |
| ON/OFF Response Time | Exceeds 1 microsecond |
| I/O Refreshing Method | Free-Run refreshing or Synchronous I/O refreshing |
| External Connection | Fujitsu Connector |
| Module Width | 30 mm (3 cm) |
| Module Dimensions | 100 mm Height x 30 mm Width x 71 mm Depth |
| Net Weight | 0.09 kg |
| Shipping Weight (Calculated) | 1.50 kg (including protective packaging) |
The NX-ID6142-6 utilizes a Fujitsu connector interface, which differs significantly from screwless clamp models. Ensure that matching pre-wired cables (such as Omron's XY3B series) or compatible connector terminal blocks are specified during panel design. It is fully backward compatible with NX-series bus couplers running standard EtherCAT or EtherNet/IP interfaces.
Because this is a high-density 32-point unit, thermal accumulation can occur within closed wire ducts if all 32 inputs are continuously active at 24 VDC. Maintain adequate cooling clearances as outlined in the Sysmac NX-series user manual, and verify that the auxiliary current limit of your internal bus coupler is not exceeded when multiple high-density input blocks are powered from the same segment.
To minimize electrical noise in high-speed applications, always use shielded, twisted-pair cabling for the Fujitsu connector. Ground the cable shields at a single point on the panel's common functional ground bar. Ensure the 24 VDC external power supply has adequate ripple filtering to prevent timing jitter during synchronous cycles.
CRITICAL SAFETY WARNING
De-energize all primary, secondary, and field-side power sources before inserting or removing the module from the DIN rail assembly. Working on live backplanes risks permanent damage to the internal ASIC and can corrupt the EtherCAT network configuration.
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 |
Japan
|