I/O slots: 8 slots.
Could you install the power module.
Outline dimension: 420*130.
There are two types of extended floor,
A power module can be inserted, and the other one is not.
The choice of any type of substrate depends on the total DC5V current consumption and the power supply on the CPU main substrate AJ72BR15 Manual AJ72BR15 Reference Manual.
If the total demand is less than the power output, no additional power supply,
Then you can choose a more economical expansion board AJ72BR15
Both ends of the main base plate of the CPU have an expansion interface, and can be used for extending the cable connection. Input and output points: 2048 points.
Input / output data points: 8192 points.
Program capacity: 30K.
Basic command processing speed (LD command) s:0 AJ72BR15 Manual AJ72BR15 Reference Manual. 15.
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 AJ72BR15 Manual AJ72BR15 Reference Manual.
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 measure of how much the useer application can store the number of indicators AJ72BR15 Manual AJ72BR15 Reference Manual.
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 AJ72BR15 Manual AJ72BR15 Reference Manual. Timer / counter,
Shift instruction accounted for 2 words. Data operation instructions for 2~4.