MELSEC iQ-F Series Vocabulary Flashcards

Vocabulary flashcards covering key MELSEC iQ-F terms and concepts from the lecture notes.

PLC (Programmable Logic Controller)

An electronic device that controls industrial systems through I/O ports and stores programmable instructions in memory.

GX Works3

Engineering software used to set up, program, debug, and maintain MELSEC iQ-F PLC projects on a PC.

FX5U-32MT-SIM

Training model configuration: FX5U CPU module with I/O and related components used for simulations.

Input Relay (X)

PLC device number for external inputs (X0, X1, …).

Output Relay (Y)

PLC device number for external outputs (Y0, Y1, …).

Internal Relay (M)

Internal PLC memory relay used for logic operations and storage during execution.

Data Register (D)

16-bit word data storage used to hold numeric data in the PLC.

Timer (T)

Present-value timer data used for time-based control in PLC programs.

Counter (C)

Present-value counter data used to count input events or operations.

Word Device

16-bit data storage group (e.g., D, T, C) used in arithmetic and data transfer.

Ladder Diagram

Circuit-like graphical representation of PLC logic used to design sequences.

MOV (Data Transfer Instruction)

Instruction that transfers data from a source to a destination (e.g., K, D to D).

BCD/BIN Conversion

Converting between binary-coded decimal and binary values using BIN/BCD related instructions.

BMOV (Block Move)

Transfers a block of n data points from a source device to a destination device.

From/To (IFM communication)

Instructions to read from or write to an Intelligent Function Module’s buffer memory.

Buffer Memory (BFM)

Internal RAM in an Intelligent Function Module used by FROM/TO for data exchange.

REF (I/O Refresh)

Instruction sequence that processes inputs and outputs to update I/O images.

END (End) Instruction

Instruction that marks the end of a ladder program and returns to I/O processing.

CJ (Jump)

Conditional jump instruction that transfers execution to a labeled location when a drive input is on.

CALL / XCALL (Subroutine)

Instructions to call a subroutine program; XCALL is an alternative subroutine call.

FOR-NEXT (Loop)

Loop construct that repeats a block of instructions n times.

PWM (Pulse Width Modulation)

High-speed output control that creates a variable duty cycle for analog-style control.

Analog Input/Output

Internal built-in conversion for analog signals (0–10 V) with read/write capability.

7-Segment Display (BCD to Y)

Using BCD data to drive a 7-segment display via Y10–Y17 outputs.

High-Speed I/O (HSIO)

Features like input interrupts and high-speed counters to capture fast signals.

HIOEN (High-Speed I/O Enable)

Control to start/stop high-speed I/O functions (e.g., CH counters or PWM channels).