Data format: RTU.
Data bits: 8.
A1SJ71UC24-R2-S2 and A1SJ71UC24-R4-S2 allow the Ans series PLC to be connected to the MODBUS network,
As the network from the station, and in accordance with the instructions of the main station of the CPU Ans user storage area for data reading / writing.
In addition to supporting the MODBUS protocol, these components also support the standard dedicated communication protocol for A1SJ71UC24 components AY23 datasheet PDF catalog AY23 PDF datasheet AY23
This feature makes the main station of the data acquisition and control with more flexibility.
Support MODBUS slave station protocol.
Supports 1 to 21 function code.
Two transmission modes: RTU or ASCII. 3C-2V/5C-2V coaxial cable.
Double circuit.
MELSECNET (II) (Master / local station) AY23 datasheet PDF catalog AY23 PDF datasheet.
According to the control requirements of the system, using the appropriate design method to design MITSUBISHI PLC program.
Procedures to meet the requirements of system control as the main line,
Write one by one to achieve the control function or the sub task of the program,
Gradually improve the functions specified by the system.
MITSUBISHI PLC initialization procedure AY23 datasheet PDF catalog AY23 PDF datasheet. After MITSUBISHI PLC on power, the general need to do some of the initial operation,
In order to start making necessary preparations, to avoid the wrong operation of the system.
The main contents of the initialization program are: to some data area, counter and so on,
Data needed to restore some of the data area,
Set or reset some relays,
For some initial state display, etc.. STN color / monochrome LCD man-machine interface to replace the backlight.
Applicable models: A95_GOT- (Q) SBD/ (Q) LBD (-M3) (). RS-232 1 channel.
RS-422/485 1 channel.
Transmission speed: 2 channels.
At the same time the use of 115.2kbps may.
When the programmer input programinto the user program memory,
Then CPU according to the function of the system (the system program memory to explain the compiler),
Translate the user program into PLC internally recognized by the user to compile the program.
Input status and input information input from the input interface,
CPU will be stored in the working data memory or in the input image register.
And then combine the data and the program with CPU.
The result is stored in the output image register or the working data memory,
And then output to the output interface, control the external drive.
Semiconductor circuit with memory function.
System program memory and user memory.
System program memory for storing system program,
Including management procedures, monitoring procedures, as well as the user program to do the compiler to comppile the process of interpretation AY23 datasheet PDF catalog AY23 PDF datasheet.
Read only memory. Manufacturers use, content can not be changed, power does not disappear.
User memory: user program storage area and work data storage area.
Composed of random access memory (RAM) AY23 datasheet PDF catalog AY23 PDF datasheet. User use.
Power cut off. Commonly used efficient lithium battery as a backup power supply, life is generally 3~5 years.