Rc7 Script [Firefox]

FUNCTION F_ScaleInput : INT VAR_INPUT rRaw : REAL; // 0.0 to 10.0 Volts rMin : REAL; rMax : REAL; END_VAR VAR_TEMP rPercent : REAL; END_VAR rPercent := (rRaw - 0.0) / (10.0 - 0.0); // Normalize F_ScaleInput := REAL_TO_INT(rMin + (rMax - rMin) * rPercent); END_FUNCTION Real-time control relies on timing. RC7 uses the TON (Timer ON delay) function block.

VAR_RETAIN nProductionCount : INT; // Survives reboot END_VAR Let’s synthesize everything into a practical RC7 script for a pick-and-place robot. rc7 script

// State Machine Logic CASE nState OF 0: // Waiting for part bGripperVacuum := FALSE; bArmDown := FALSE; IF bPartPresent THEN nState := 10; END_IF FUNCTION F_ScaleInput : INT VAR_INPUT rRaw : REAL; // 0

WHILE bCondition DO // Perform action WAIT T#10ms; // Allow PLC cycle to continue END_WHILE By default, variables reset on power cycle. Use VAR_RETAIN to preserve values. // State Machine Logic CASE nState OF 0:

This article serves as a deep dive into the RC7 script. We will explore its syntax, core functionalities, variable handling, control structures, and advanced debugging techniques. By the end of this guide, you will be able to write efficient, error-free RC7 scripts that streamline complex tasks. The RC7 script is a proprietary scripting language primarily used in industrial robotics and automation controllers , notably within the CODESYS ecosystem and specific programmable logic controllers (PLCs). Unlike general-purpose languages like Python or C++, RC7 is an IEC 61131-3 compliant scripting variant designed for real-time operations.

PROGRAM Main VAR bStartButton : BOOL AT %IX0.0; bConveyorMotor : BOOL AT %QX0.1; nCycleCount : INT := 0; END_VAR // Main execution block IF bStartButton THEN bConveyorMotor := TRUE; nCycleCount := nCycleCount + 1; ELSE bConveyorMotor := FALSE; END_IF