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.
Engineered for high-speed, high-precision motion tasks within industrial automation architectures, the QD70D4 multi-axis positioning module provides highly responsive control for up to four independent axes. This module utilizes a differential driver output method, delivering high-speed pulse trains up to 4 Mpps to coordinate precise movements across diverse machinery configurations. Operating seamlessly on the MELSEC-Q Series platform, it is well-suited for Point-to-Point (PTP) positioning and basic linear trajectory control without the overhead of complex programming.
The module features exceptionally low startup latency, executing single-axis moves in 0.1 ms and synchronized four-axis starts within 0.2 ms. It is designed to handle speed and position switching seamlessly, making it an excellent choice for applications requiring dynamic transit profile adjustments. Interface connections are established via dual 40-pin connectors, allowing robust and secure field-wiring integration with compatible drive units.
| Mitsubishi Electric |
| QD70D4 |
| MELSEC-Q Series |
| 4 axes |
| PTP (Point-To-Point) control, Trajectory control (linear only), Speed/position switching control |
| Pulse |
| -2147483648 to 2147483647 pulses (Absolute and Increment methods) |
| Differential driver output |
| 4,000,000 pulse/s (4 Mpps) |
| 10 data entries per axis |
| 0.1 ms (1-axis start) / 0.2 ms (simultaneous 4-axis start) |
| Trapezoidal, S-shaped (0 to 32767 ms execution range) |
| 10 m |
| Two 40-pin connectors |
| A6CON1, A6CON2, A6CON4 (sold separately) |
| 48 points (2 slots: 16-point free assignment + 32-point intelligent assignment) |
| 1.16 A (at 5 VDC) |
| 98 mm x 55.2 mm x 90 mm |
| 0.17 kg |
Global Express Shipping
Returns & Warranty

Engineered for high-speed, high-precision motion tasks within industrial automation architectures, the QD70D4 multi-axis positioning module provides highly responsive control for up to four independent axes. This module utilizes a differential driver output method, delivering high-speed pulse trains up to 4 Mpps to coordinate precise movements across diverse machinery configurations. Operating seamlessly on the MELSEC-Q Series platform, it is well-suited for Point-to-Point (PTP) positioning and basic linear trajectory control without the overhead of complex programming.
The module features exceptionally low startup latency, executing single-axis moves in 0.1 ms and synchronized four-axis starts within 0.2 ms. It is designed to handle speed and position switching seamlessly, making it an excellent choice for applications requiring dynamic transit profile adjustments. Interface connections are established via dual 40-pin connectors, allowing robust and secure field-wiring integration with compatible drive units.
| Mitsubishi Electric |
| QD70D4 |
| MELSEC-Q Series |
| 4 axes |
| PTP (Point-To-Point) control, Trajectory control (linear only), Speed/position switching control |
| Pulse |
| -2147483648 to 2147483647 pulses (Absolute and Increment methods) |
| Differential driver output |
| 4,000,000 pulse/s (4 Mpps) |
| 10 data entries per axis |
| 0.1 ms (1-axis start) / 0.2 ms (simultaneous 4-axis start) |
| Trapezoidal, S-shaped (0 to 32767 ms execution range) |
| 10 m |
| Two 40-pin connectors |
| A6CON1, A6CON2, A6CON4 (sold separately) |
| 48 points (2 slots: 16-point free assignment + 32-point intelligent assignment) |
| 1.16 A (at 5 VDC) |
| 98 mm x 55.2 mm x 90 mm |
| 0.17 kg |
Global Express Shipping
Returns & Warranty
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| Country of origin |
United States
|