Input and output points: 1024 points.
Input / output data points: 1024 points.
Program capacity: 14K.
Basic command processing speed (LD command) s:0.20.
Coaxial data communication line function.
Each scanning process. Focus on the input signal sampling. Focus on the output signal to refresh.
Input refresh process AJ71AP21 PDF. 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 AJ71AP21
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 AJ71AP21 PDF.
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 measure of how much the user application can store the number of indicators AJ71AP21 PDF.
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 logical operation instructions each account for 1 words. Timer / counter,
Shift instruction accounted for 2 words. Data operation instructions for 2~4. Enter 32 points.
5mA DC24V.
Response time: 0.3ms.
32 point 1 public.
Output 32 points.
DC12/24V.
Leakage current: 0.1mA OFF.
Response time: 1ms. 32 point 1 public.
Protection function.
Surge.
40 pin connector.
Switching value, also known as logic, refers to only two values, 0 or 1, ON or OFF.
It is the most common control, it is the advantage of PLC control,
Is also the most basic application of PLC.
Switch volume control is designed to,
According to the current input combinatioon of the switch quantity and the history of the input sequence,
So that PLC generates the corresponding switching output,
In order to make the system work in a certain order AJ71AP21 datasheet.
So, sometimes also known as the order control.
And seqquential control is divided into manual, semi-automatic or automatic AJ71AP21 datasheet.
And the control principle is decentralized, centralized and hybrid control three.