What capabilities do textual programming languages provide that leadthrough programming does not?

• A. Enhanced sensor capabilities
• B. Improved output control
• C. Program logic
• D. Enhanced sensor capabilities, improved output control, program logic, computations, and communication with other systems

Answer: (D)

Textual programming languages unlock capabilities beyond what leadthrough programming can offer because they let you express and implement complex behavior. With text-based code you can create program logic using conditionals and loops, manage data with variables and structures, and perform computations that drive decision making and calculations. You can also control outputs with precise sequencing, timing, and nuanced actuation, rather than just replaying a recorded path. Additionally, textual programs enable processing and interpreting sensor data, including filtering and calibration, and they allow communication with other systems and software over networks or fieldbuses. Leadthrough programming mainly captures a path and basic commands, so it lacks the robust logic, computations, advanced output control, sensor processing, and system integration that textual languages provide. All those capabilities together explain why the combined option is the best choice.