Special multi axis positioning controller for NSD servo system.
Program capacity: Max 60K step.
Input / output points: 1920 points.
Control AC motor required I/O points with PLC control AC motor,
Signal and feedback signal is used as the input signal of PLC,
The control of AC motor is accomplished by using the output signal of PLC to drive the contactor A953GOT-LBD PDF.
For example, the AC motor is controlled by a Y- delta starting with PLC,
Generally need to occupy 4 of the PLC input and 3 output points,
PLC control of a one-way operation of the cage type motor,
4 input points and 1 output points are occupied, and a reversible motor is controlled,
5 input points and 2 output points are needed to control a unidirectional operation of variable pole speed control motor,
5 input points and 2 output points are required to control a unidirectional operation of the rotor AC motor,
3 input points and 4 output points are needed to control a reversible running winding rotor AC motor,
Requires 4 input points and 5 output points A953GOT-LBD PDF A953GOT-LBD Input and output points: 2048 points.
Input / output data points: 2048 points A953GOT-LBD PDF.
Program capacity: 30K.
Basic command processing speed (LD command) s:0.15.
Optical data communication line function (GI cable).
Integral type: the PLC components are installed together or a few pieces of printed circuit board,
And together with the power supply installed in the casing to form a single overall called the host or the basic unit, small, ultra small PLC using this structure.
Modular: PLC is the basic components of a separate module.
Medium and large PLC used this way. Easy maintenance.
Each scanning process. Focus on the input signal sampling. Focus on the output signal to refresh.
Input refresh process. When the input port is closed,
Program in the implementation phase, the input end of a new state, the new state can not be read.
Only when the program is scanned, the new state is read.
A scan cycle is divided into the input sample, the program execution, the output refresh.
The contents of the component image register are changed with the change of the execution of the program.
The length of the scan cycle is determined by the three.
CPU the speed of executing instructions.
Time of instruction.
Instruction count.
Due to the adoption of centralized sampling.
Centralized output mode.
There exist input / output hysteresis phenomena, i.e., the input / output response delay.
User program storage capacity: it is a measurre of how much the user application can store the number of indicators A953GOT-LBD datasheet.
Usually in words or K words as units. 16 bit binary number is a word,
Every 1024 words are 1K words. PLC to store instructions and data in words.
General llogical operation instructions each account for 1 words A953GOT-LBD datasheet. Timer / counter,
Shift instruction accounted for 2 words. Data operation instructions for 2~4.