When it performs scans on internal components x, y, m, c, s, t, counts the number of signals. When the count reached the set value for the counter, counter-contact action, used in the control system of the corresponding function. Low counters can not only record from the input terminal (input relay) switching signals, and can … Continue reading Encyclopedia of internal registers of the FX series PLC

For PLC programming, the coil and contacts can only be used in a program, not direct external inputs and outputs, is often used as a staging and so on.Auxiliary relays use decimal address number.Auxiliary relay is divided into the following categories:① General auxiliary relays M0~M499 (500 points)② power outages keep auxiliary relays M500~M1023 (524)Equipped with … Continue reading FX series PLC internal program components-auxiliary relay (m)

The delay has a maximum value of FX series PLC, such as delay greater than the maximum value of the timer can be used more than one timer delay relay.The specific method is:(1) before using a normally open start the next timer timer.(2) counter and timer work.

Registers of programmable controller used to store the analog control, position control, data I/O required for data and parameters. Every data register is 16-bit (MSB as the sign bit), you can use two data consolidation for 32-bit data registers (the highest bit is the sign bit).(1) with data registers D0 ∽ D199 (200 points)If no … Continue reading FX2N series PLC data register (d)

1. enter a relay (x)Enter relay is specifically designed to receive the input signal in the PLC's internal virtual relays. It was done by a PLC works relay function. It is inside the PLC connected to the input terminals, it has an infinite number of normally open and normally closed contacts, these dynamic, fixed broken … Continue reading FX series PLC soft component-input relay x and Output relay y

PLC ladder diagram programs limited the maximum operating frequency of the counter by the scanning cycle, generally only dozens of Hz. In industrial control, sometimes requires fast PLC counting function, pulse count may come from rotary encoders, mechanical switches or electronic switch. High speed counting modules for dozens of even hundreds kHz Hz pulse count, … Continue reading Mitsubishi PLC high-speed counter module FX2N-1HC

FX series PLC ladder diagram programming elements names letters and digits, they represent the type of component and the component number, such as Y10,M129. Input relay output relay element, represented by the octal number, octal number only 0~7 the 8 digit symbol, follow the "every 8 into 1" operation. For example, octal, X17 and X20 … Continue reading FX2N series PLC input/output relay introduction

It consists of user data, user components distribution, storage, file storage, user parameters by the user program area.1. User data structureUser data structure is divided into three main categories:First class is a bit of data. Second class is character data. Third class for words mixed with bit2. Logic elements(1) enter relay (X0 ~ X177) PLC … Continue reading FX series PLC user environments, and data structure