plc program
CJ conditional jump instructions (p) numbered FNC00, label P0~P127 operand is pointer, P63 to END sequence, without tags. B line label is allowed to modify the pointer. Step 3 procedures for CJ and CJP, pointer grade 1 step.As shown in Figure 3-28, when X20 is switched on, then jumps to the label by CJ P9 … Continue reading CJ conditional jump instructions (p) number is FNC00
1. Components and componentsLike x, y, m and s only ON/OFF information, such as software components known as components like t, c, d and other numerical software components is called a word element, a word element composed of 16-bit binary number.Components can be used in combination, 4-bit components as one unit, general representation is soft … Continue reading Mitsubishi FX series PLC functional instruction data format
1. continuous and pulse the implementationFunction instruction are continuous and pulse implementation of the two types. As Figure 1 by shows, instruction help remember breaks MOV behind has "p" said pulse implementation, that the instruction only in X1 connected (by OFF to ON) Shi implementation (will D10 in the of data sent to D12 in … Continue reading Mitsubishi FX series PLC function instruction execution and data length
Command formatCommand format is different from basic instructions. Function instruction with number FNC00~FNC294, and give the corresponding mnemonics (mostly with English names or abbreviations). For example FNC45 mnemonic is MEAN (average), if using a simple programmer type FNC45, using the intelligent programming or program on your computer you can also type the mnemonic MEAN.Function instruction … Continue reading Mitsubishi FX series PLC functional instruction format
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
Internal counter for the PLC's internal image register (X,Y,M,S) provides the signal count, count pulse for the duration of the ON or OFF, should be greater than the PLC scanning cycle, the response rate is typically less than dozens of cycles per second.1. 16-bit and counter16-bit and a counter value for l~32767. Figure 3-13 shows … Continue reading PLC internal counters (c)
PLC ONE 