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 ER1018-0001 is an industrial-grade, 8-channel digital input EtherCAT Box module designed for direct mounting on machinery and equipment. Housed in a highly durable, zinc die-cast enclosure, this module is built to withstand mechanical stress, vibration, and wet environments without requiring a protective electrical control cabinet.
The device features eight digital inputs that acquire binary signals from field sensors and transmit them with electrical isolation to the higher-level EtherCAT controller. A rapid 10-microsecond input filter ensures precise and reliable signal acquisition, making the BECKHOFF ER1018-0001 ideal for high-speed automated processes in decentralized installations.
| Parameter | Specification |
|---|---|
| Manufacturer | BECKHOFF |
| Exact Model | ER1018-0001 |
| Protocol | EtherCAT |
| Bus Interface | 2 x M8 socket, shielded, screw type |
| Parameter | Specification |
|---|---|
| Number of Inputs | 8 |
| Input Connections | M8, 3-pin, screw type, a-coded |
| Nominal Input Voltage | 24 V DC (-15% / +20%) |
| Input Filter Time | 10 us |
| "0" Signal Voltage | -3 to +5 V (conforming to EN 61131-2, type 3) |
| "1" Signal Voltage | 11 to 30 V (conforming to EN 61131-2, type 3) |
| Input Current | Typically 3 mA (conforming to EN 61131-2, type 3) |
| Sensor Supply | From control voltage, maximum 0.5 A total, short-circuit proof |
| Electrical Isolation | Control voltage to fieldbus: Yes |
| Parameter | Specification |
|---|---|
| Housing Material | Zinc die-cast |
| Dimensions (W x H x D) | 30 mm x 126 mm x 26.5 mm |
| Weight | Approx. 265 g |
| Operating Temperature | -25 to +60 Celsius |
| Storage Temperature | -40 to +85 Celsius |
| Protection Rating | IP65, IP66, IP67 (conforming to EN 60529) |
| Vibration / Shock Resistance | Conforms to EN 60068-2-6 / EN 60068-2-27 |
| Interface | Function |
|---|---|
| EtherCAT Port (Input) | 1 x M8 female socket, 4-pin, shielded (control input) |
| EtherCAT Port (Output) | 1 x M8 female socket, 4-pin, shielded (downstream connection) |
| Digital Inputs 1 to 8 | 8 x M8 female sockets, 3-pin, a-coded |
| Power Feed | 1 x M8 male connector, 4-pin |
| Power Downstream | 1 x M8 female socket, 4-pin |
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Returns & Warranty

The BECKHOFF ER1018-0001 is an industrial-grade, 8-channel digital input EtherCAT Box module designed for direct mounting on machinery and equipment. Housed in a highly durable, zinc die-cast enclosure, this module is built to withstand mechanical stress, vibration, and wet environments without requiring a protective electrical control cabinet.
The device features eight digital inputs that acquire binary signals from field sensors and transmit them with electrical isolation to the higher-level EtherCAT controller. A rapid 10-microsecond input filter ensures precise and reliable signal acquisition, making the BECKHOFF ER1018-0001 ideal for high-speed automated processes in decentralized installations.
| Parameter | Specification |
|---|---|
| Manufacturer | BECKHOFF |
| Exact Model | ER1018-0001 |
| Protocol | EtherCAT |
| Bus Interface | 2 x M8 socket, shielded, screw type |
| Parameter | Specification |
|---|---|
| Number of Inputs | 8 |
| Input Connections | M8, 3-pin, screw type, a-coded |
| Nominal Input Voltage | 24 V DC (-15% / +20%) |
| Input Filter Time | 10 us |
| "0" Signal Voltage | -3 to +5 V (conforming to EN 61131-2, type 3) |
| "1" Signal Voltage | 11 to 30 V (conforming to EN 61131-2, type 3) |
| Input Current | Typically 3 mA (conforming to EN 61131-2, type 3) |
| Sensor Supply | From control voltage, maximum 0.5 A total, short-circuit proof |
| Electrical Isolation | Control voltage to fieldbus: Yes |
| Parameter | Specification |
|---|---|
| Housing Material | Zinc die-cast |
| Dimensions (W x H x D) | 30 mm x 126 mm x 26.5 mm |
| Weight | Approx. 265 g |
| Operating Temperature | -25 to +60 Celsius |
| Storage Temperature | -40 to +85 Celsius |
| Protection Rating | IP65, IP66, IP67 (conforming to EN 60529) |
| Vibration / Shock Resistance | Conforms to EN 60068-2-6 / EN 60068-2-27 |
| Interface | Function |
|---|---|
| EtherCAT Port (Input) | 1 x M8 female socket, 4-pin, shielded (control input) |
| EtherCAT Port (Output) | 1 x M8 female socket, 4-pin, shielded (downstream connection) |
| Digital Inputs 1 to 8 | 8 x M8 female sockets, 3-pin, a-coded |
| Power Feed | 1 x M8 male connector, 4-pin |
| Power Downstream | 1 x M8 female socket, 4-pin |
Global Express Shipping
Returns & Warranty
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| Country of origin |
Germany
|