5 slots.
To install the power supply.
For QnA/A series.
Switch volume control is designed to,
According to the current input combination 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 A171SCPU Fundamentals Manual A171SCPU Programming Manual.
So, sometimes also known as the order control A171SCPU
And sequential control is divided into manual, semi-automatic or automatic.
And the control principle is decentralized, centralized and hybrid control three.
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 A171SCPU Fundamentals Manual A171SCPU Programming Manual.
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 A171SCPU Fundamentals Manual A171SCPU Programming Manual.
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.
System program memory for storing system program,
Including management procedures, monitoring procedures, as well as the user program to do the compiler to compile the process of interpretation.
Read only memory. Manufacturers use, content can not be changed, power does not disappear. Series Name: A985GOT.
Size: 12 inches.
Resolution: 800 * 600.
Display equipment: high brightness TFT color display.
Display color: 256 color.
Power supply: DC24V.
Man machine interface (Machine Interaction Human, referred to as HMI), also known as the user interface or user interface,
Is a communication interface between human and compputer,
Is an important part of the computer system A171SCPU Fundamentals Manual A171SCPU Programming Manual.
Is a medium for interaction and information exchange between the system and the user,
It realizes the transformation between the internal fform of information and the acceptable form of human being A171SCPU Fundamentals Manual A171SCPU Programming Manual.
Where there is a man-machine interface in the field of human computer information exchange.