AJ71AP21 MITSUBISHI PLC distribution I/O points and design MITSUBISHI PLC peripheral hardware circuit MITSUBISHI AJ71AP21

Input and output points: 1024 points.
Input / output data points: 1024 points.
Program capacity: 14K.
Basic command processing speed (LD command) s:0.20.
Optical data communication line.
Each scanning process. Focus on the input signal sampling. Focus on the output signal to refresh AJ71AP21.
Input refresh process. When the input port is closed,
PProgram 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 AJ71AP21.
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 AJ71AP21.
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 MITSUBISHI AJ71AP21.
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 MITSUBISHI AJ71AP21. Timer / counter,
Shift instruction accounted for 2 words. Data operation instructions for 2~4. Description: can form up to 8 of the star wiring, as well as the maximum length of the application of the transmission line distribution, waterproof (IP67) structure.
Spare 5 products for different purposes MITSUBISHI AJ71AP21.
Thin waterproof type relay hub.
Extension of star type wiring and main line length, waterproof structure.
Spring clip terminal type relay hub.
Star type wiring, length of the main line, spring clamping terminal table type.
Relay appliance (T branch) unit.
Extension of T type branch and trunk length.
Relay unit in light.
In the presence of interference in the environment of the wiring, the length of the trunk line.
Relay unit in space light.
Communication between linear moving bodies.
SI-200/250 fiber optic cable.
Double loop.
MELSECNET (II) (Master / local station).
How to choose MITSUBISHI PLC.
MITSUBISHI PLC options include the choice of MITSUBISHI PLC models, capacity, I/O module, power, etc..
MITSUBISHI PLC distribution I/O points and design MITSUBISHI PLC peripheral hardware circuit
Draw the I/O point of the PLC and the input / output device connection diagram or the corresponding table,
This part also can be carried out in second steps.
Design PLC peripheral hardware circuit.
Draw the electrical wiring diagram of the other parts of the system,
Including the main circuit and the control circuit does not enter the PLC, etc AJ71AP21..
The electrical schematic diagram of the system composed of I/O PLC connection diagram and PLC peripheral electrical circuit diagram.
So far the system''s hardware electrical circuit has been determined.