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.
Acquisition of analog process signals directly in the field is managed efficiently by the Beckhoff IP3112-B310, an IP67-rated Fieldbus Box designed for rugged decentralized control architectures. This module processes 2 differential analog input signals within a 0 to 10 V range at a 12-bit resolution, transmitting the digitized values directly to PROFIBUS DP networks. By eliminating the necessity for protective control enclosures, the IP3112-B310 facilitates optimized machine-mount layouts and significantly reduces field wiring topology complexity. Configuration and diagnostic integration are fully supported via the Beckhoff KS2000 software suite or directly through master controller configuration tools utilizing DP-V1 extensions.
| Parameter | Value / Specification |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model Number | IP3112-B310 |
| Product Type | Fieldbus Box (Analog Input) |
| Fieldbus Protocol | PROFIBUS DP (DP-V1 supported) |
| Data Transfer Rates | Automatic detection up to 12 Mbaud |
| Inputs | 2 differential analog inputs (0 to 10 V) |
| Resolution | 12-bit |
| Bus Interface | 1 x M12 socket, 5-pin, B-coded |
| Control Voltage Supply | 24 V DC (-15 percent / +20 percent) |
| Power Feed Interface | 1 x M8 male connector, 4-pin |
| Downstream Power Interface | 1 x M8 female connector, 4-pin |
| Internal Current Consumption | 85 mA (box supply) + sensor draw (Max 0.5 A) |
| Electrical Isolation | No isolation between control voltage and fieldbus |
| Operating Temperature | 0 to +55 degC |
| Storage Temperature | -25 to +85 degC |
| Protection Rating | IP65 / IP66 / IP67 (conforms to EN 60529) |
| Approvals | CE, UL |
| Shipping Weight (Calculated) | 2.0 kg |
| Connector / Pin | Signal Assignment | Description |
|---|---|---|
| M12 PROFIBUS Pin 1 | VP | Power supply for termination resistors (+5V) |
| M12 PROFIBUS Pin 2 | RxD/TxD-N (A-Line) | Receive/Transmit Data, Negative (Green cable) |
| M12 PROFIBUS Pin 3 | DGND | Data reference ground |
| M12 PROFIBUS Pin 4 | RxD/TxD-P (B-Line) | Receive/Transmit Data, Positive (Red cable) |
| M12 PROFIBUS Pin 5 | Shield | Functional Ground / Shield Connection |
| M8 Power Pin 1 | +24 V DC (Us) | Control Voltage Supply (Module Logic) |
| M8 Power Pin 2 | +24 V DC (Up) | Load Voltage Supply (Actuators/Sensors) |
| M8 Power Pin 3 | GNDs | Ground for Control Voltage |
| M8 Power Pin 4 | GNDp | Ground for Load Voltage |
The IP3112-B310 features a dedicated PROFIBUS DP interface (B310 series). If transitioning to modern Industrial Ethernet protocols (such as EtherCAT or PROFINET), look for the corresponding IP3112-B110 (EtherCAT) or IP3112-B900 (EtherNet/IP) variants. Note that configuration GSD files are hardware-version specific; ensure your PLC project's GSD library is updated when swapping revisions of older B310 series boxes to prevent configuration mismatch faults on commissioning.
Because there is no galvanic isolation between the control voltage logic (Us) and the fieldbus lines in the IP3112-B310 design, improper ground loop management can degrade serial communication. Always ensure that the PROFIBUS shield is continuous and grounded at a single, low-impedance master point. Avoid running high-voltage motor cables adjacent to unshielded M8/M12 fieldbus trunk lines to prevent electromagnetic induction of noise into the analog measurement circuits.
When routing power to multiple Fieldbus Boxes via the M8 daisy-chain downstream interface, calculate your cumulative current draw carefully. The total looped current through Pin 1 (Us) and Pin 2 (Up) must never exceed 4 A. If your downstream sensors and fieldbus box logic exceed this limit, you must run an additional dedicated power drop from the supply cabinet to interrupt the chain and prevent terminal thermal overload.
CRITICAL WARNING:
Disconnect all electrical power sources from the field segment and control racks prior to mounting or connecting the fieldbus module. Residual voltages can cause instantaneous damage to the sensitive 12-bit analog input converters. Verify that all M8 and M12 IP-rated connectors are fully seated and torqued to the OEM-specified rating to ensure the IP67 moisture seal is completely locked against environmental ingress.
Global Express Shipping
Returns & Warranty

Acquisition of analog process signals directly in the field is managed efficiently by the Beckhoff IP3112-B310, an IP67-rated Fieldbus Box designed for rugged decentralized control architectures. This module processes 2 differential analog input signals within a 0 to 10 V range at a 12-bit resolution, transmitting the digitized values directly to PROFIBUS DP networks. By eliminating the necessity for protective control enclosures, the IP3112-B310 facilitates optimized machine-mount layouts and significantly reduces field wiring topology complexity. Configuration and diagnostic integration are fully supported via the Beckhoff KS2000 software suite or directly through master controller configuration tools utilizing DP-V1 extensions.
| Parameter | Value / Specification |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model Number | IP3112-B310 |
| Product Type | Fieldbus Box (Analog Input) |
| Fieldbus Protocol | PROFIBUS DP (DP-V1 supported) |
| Data Transfer Rates | Automatic detection up to 12 Mbaud |
| Inputs | 2 differential analog inputs (0 to 10 V) |
| Resolution | 12-bit |
| Bus Interface | 1 x M12 socket, 5-pin, B-coded |
| Control Voltage Supply | 24 V DC (-15 percent / +20 percent) |
| Power Feed Interface | 1 x M8 male connector, 4-pin |
| Downstream Power Interface | 1 x M8 female connector, 4-pin |
| Internal Current Consumption | 85 mA (box supply) + sensor draw (Max 0.5 A) |
| Electrical Isolation | No isolation between control voltage and fieldbus |
| Operating Temperature | 0 to +55 degC |
| Storage Temperature | -25 to +85 degC |
| Protection Rating | IP65 / IP66 / IP67 (conforms to EN 60529) |
| Approvals | CE, UL |
| Shipping Weight (Calculated) | 2.0 kg |
| Connector / Pin | Signal Assignment | Description |
|---|---|---|
| M12 PROFIBUS Pin 1 | VP | Power supply for termination resistors (+5V) |
| M12 PROFIBUS Pin 2 | RxD/TxD-N (A-Line) | Receive/Transmit Data, Negative (Green cable) |
| M12 PROFIBUS Pin 3 | DGND | Data reference ground |
| M12 PROFIBUS Pin 4 | RxD/TxD-P (B-Line) | Receive/Transmit Data, Positive (Red cable) |
| M12 PROFIBUS Pin 5 | Shield | Functional Ground / Shield Connection |
| M8 Power Pin 1 | +24 V DC (Us) | Control Voltage Supply (Module Logic) |
| M8 Power Pin 2 | +24 V DC (Up) | Load Voltage Supply (Actuators/Sensors) |
| M8 Power Pin 3 | GNDs | Ground for Control Voltage |
| M8 Power Pin 4 | GNDp | Ground for Load Voltage |
The IP3112-B310 features a dedicated PROFIBUS DP interface (B310 series). If transitioning to modern Industrial Ethernet protocols (such as EtherCAT or PROFINET), look for the corresponding IP3112-B110 (EtherCAT) or IP3112-B900 (EtherNet/IP) variants. Note that configuration GSD files are hardware-version specific; ensure your PLC project's GSD library is updated when swapping revisions of older B310 series boxes to prevent configuration mismatch faults on commissioning.
Because there is no galvanic isolation between the control voltage logic (Us) and the fieldbus lines in the IP3112-B310 design, improper ground loop management can degrade serial communication. Always ensure that the PROFIBUS shield is continuous and grounded at a single, low-impedance master point. Avoid running high-voltage motor cables adjacent to unshielded M8/M12 fieldbus trunk lines to prevent electromagnetic induction of noise into the analog measurement circuits.
When routing power to multiple Fieldbus Boxes via the M8 daisy-chain downstream interface, calculate your cumulative current draw carefully. The total looped current through Pin 1 (Us) and Pin 2 (Up) must never exceed 4 A. If your downstream sensors and fieldbus box logic exceed this limit, you must run an additional dedicated power drop from the supply cabinet to interrupt the chain and prevent terminal thermal overload.
CRITICAL WARNING:
Disconnect all electrical power sources from the field segment and control racks prior to mounting or connecting the fieldbus module. Residual voltages can cause instantaneous damage to the sensitive 12-bit analog input converters. Verify that all M8 and M12 IP-rated connectors are fully seated and torqued to the OEM-specified rating to ensure the IP67 moisture seal is completely locked against environmental ingress.
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
|