Learn Mitsubishi-gx-works - 10 Code Examples & CST Typing Practice Test

Mitsubishi GX Works is an integrated software suite for programming, configuring, and monitoring Mitsubishi PLCs (Programmable Logic Controllers). It combines PLC programming, simulation, debugging, and device management in a single environment.

View all 10 Mitsubishi-gx-works code examples →

Hello World Output in GX Works (ST)TON Timer Example (ST)CTU Counter Example (ST)Move Instruction (MOV)Analog Input Scaling (0-4000 to 0-100)Motor Start/Stop Latch (ST)Rising Edge Detection (ST)For Loop Array Sum (ST)Simple PID Call (ST)PWM Output Example (ST)

Learn MITSUBISHI-GX-WORKS with Real Code Examples

Updated Nov 26, 2025

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Code Sample Descriptions

Hello World Output in GX Works (ST)

IF X0 THEN
    Y0 := TRUE;
ELSE
    Y0 := FALSE;
END_IF;

A simple ST program that turns on Y0 when X0 is pressed.

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TON Timer Example (ST)

TON(T_1, X0, T#5s);
IF T_1.Q THEN
    Y0 := TRUE;
END_IF;

Using the Mitsubishi TON (On-Delay) timer in Structured Text.

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CTU Counter Example (ST)

CTU(C_1, X1, 10);
IF C_1.CV >= 10 THEN
    Y0 := TRUE;
END_IF;

A simple up-counter that activates Y0 after 10 pulses.

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Move Instruction (MOV)

D100 := D0;

Structured Text equivalent of MOV in GX Works.

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Analog Input Scaling (0-4000 to 0-100)

Scaled := (D0 * 100) / 4000;

Scaling Mitsubishi raw analog input range to engineering units.

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Motor Start/Stop Latch (ST)

IF X0 THEN
    M0 := TRUE;
END_IF;
IF X1 THEN
    M0 := FALSE;
END_IF;
Y0 := M0;

Classic seal-in motor circuit using X0 and X1.

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Rising Edge Detection (ST)

Prev := Curr;
Curr := X0;
R_TRIG := Curr AND NOT Prev;

Basic rising edge detection using historical bool.

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For Loop Array Sum (ST)

Sum := 0;
FOR i := 0 TO 9 DO
    Sum := Sum + D[i];
END_FOR;

Summing 10 data registers D0-D9.

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Simple PID Call (ST)

PID(PV := D100,
    SP := D200,
    OUT => D300,
    EN := TRUE);

Calling a PID block in Mitsubishi ST.

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PWM Output Example (ST)

IF Duty > 100 THEN
    Duty := 100;
END_IF;
PWM_CH1.Duty := Duty;

Simple PWM control using a duty cycle tag.

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Frequently Asked Questions about Mitsubishi-gx-works

What is Mitsubishi-gx-works?

What are the primary use cases for Mitsubishi-gx-works?

Programming Mitsubishi PLCs using ladder logic or structured text. Configuring PLC hardware modules and I/O devices. Simulating PLC logic for testing and validation. Monitoring and debugging PLC operations. Maintaining industrial automation systems efficiently

What are the strengths of Mitsubishi-gx-works?

Unified IDE for Mitsubishi PLC programming. Robust debugging and simulation tools. Supports a wide range of PLC models. Facilitates structured and maintainable project workflows. Reliable integration with Mitsubishi industrial hardware

What are the limitations of Mitsubishi-gx-works?

Limited to Mitsubishi PLCs only. Complex for beginners without automation experience. Simulation may not perfectly mimic real-world PLC behavior. Less flexible for non-Mitsubishi automation systems. Requires licensed software for full features

How can I practice Mitsubishi-gx-works typing speed?

CodeSpeedTest offers 10+ real Mitsubishi-gx-works code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.

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Code Sample Descriptions

Hello World Output in GX Works (ST)

IF X0 THEN
    Y0 := TRUE;
ELSE
    Y0 := FALSE;
END_IF;

A simple ST program that turns on Y0 when X0 is pressed.

Let’s Try →

TON Timer Example (ST)

TON(T_1, X0, T#5s);
IF T_1.Q THEN
    Y0 := TRUE;
END_IF;

Using the Mitsubishi TON (On-Delay) timer in Structured Text.

Let’s Try →

CTU Counter Example (ST)

CTU(C_1, X1, 10);
IF C_1.CV >= 10 THEN
    Y0 := TRUE;
END_IF;

A simple up-counter that activates Y0 after 10 pulses.

Let’s Try →

Move Instruction (MOV)

D100 := D0;

Structured Text equivalent of MOV in GX Works.

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Analog Input Scaling (0-4000 to 0-100)

Scaled := (D0 * 100) / 4000;

Scaling Mitsubishi raw analog input range to engineering units.

Let’s Try →

Motor Start/Stop Latch (ST)

IF X0 THEN
    M0 := TRUE;
END_IF;
IF X1 THEN
    M0 := FALSE;
END_IF;
Y0 := M0;

Classic seal-in motor circuit using X0 and X1.

Let’s Try →

Rising Edge Detection (ST)

Prev := Curr;
Curr := X0;
R_TRIG := Curr AND NOT Prev;

Basic rising edge detection using historical bool.

Let’s Try →

For Loop Array Sum (ST)

Sum := 0;
FOR i := 0 TO 9 DO
    Sum := Sum + D[i];
END_FOR;

Summing 10 data registers D0-D9.

Let’s Try →

Simple PID Call (ST)

PID(PV := D100,
    SP := D200,
    OUT => D300,
    EN := TRUE);

Calling a PID block in Mitsubishi ST.

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PWM Output Example (ST)

IF Duty > 100 THEN
    Duty := 100;
END_IF;
PWM_CH1.Duty := Duty;

Simple PWM control using a duty cycle tag.

Let’s Try →

Frequently Asked Questions about Mitsubishi-gx-works

What is Mitsubishi-gx-works?

What are the primary use cases for Mitsubishi-gx-works?

What are the strengths of Mitsubishi-gx-works?

What are the limitations of Mitsubishi-gx-works?

How can I practice Mitsubishi-gx-works typing speed?

CodeSpeedTest offers 10+ real Mitsubishi-gx-works code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.