BASIC program running.
RS-232 2 channel, RS-422 1 channel.
Serial interface, memory card interface.
How to determine the input / output device of MITSUBISHI plc.
According to the control requirements of the system,
All input devices and output devices required for the determination of the system,
To determine the input / output device related to the MITSUBISHI PLC,
To determine the I/O PLC points A951GOT-LBD-M3 Hardware Manual A951GOT-LBD-M3 User's Manual A951GOT-LBD-M3
Detailed analysis of the process and work characteristics of the controlled object,
To understand the coordination between the controlled object machine, electricity and liquid,
The control requirements of the controlled object for MITSUBISHI PLC control system are put forward,
Determine the control program, to develop a design task book A951GOT-LBD-M3 Hardware Manual A951GOT-LBD-M3 User's Manual. I/O slots: 2 slots.
Outline dimension: 220*130.
CPU basic board can be plugged into 1 power modules,
1 CPU components and a maximum of 2, 3, 5, or 8 single slot size special function components and I/O components are respectively inserted and arranged.
The expansion port are arranged on the basic substrate on both sides, for connecting board for expansion A951GOT-LBD-M3 Hardware Manual A951GOT-LBD-M3 User's Manual.
Up to 3 extension substrates. NSD servo system.
A73CPU (P21/R21) -S3 dedicated.
Relay output interface circuit of PLC
Working process: when the internal circuit output digital signal 1,
There is a current flowing through, the relay coil has a current, and then the normally open contact is closed,
Provide load current and voltage.
When the internal circuit outputs a digital signal 0, there is no current flowing through it,
The relay coil does not have a current, and the normally open contact is broken off,
A current or voltage that is disconnected from the load.
It is through the output interface circuit to the internal digital circuit into a signal to make the load action or not action.
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.
I/O points is an important indicator of PLC.
Reasonable selection of I/O points can not only satisfy the control requirements of the system,
And the total investment of the system is the lowest.
The input and output points and types of PLC should be determined according to the analog quantity and switch quaantity of the controlled object,
Generally an input / output element to take up an input / output point A951GOT-LBD-M3 Hardware Manual A951GOT-LBD-M3 User's Manual.
Taking into account the future adjustment and expansion,
In general should be estimaated on the total number of points plus the amount of spare 20%~30% A951GOT-LBD-M3 Hardware Manual A951GOT-LBD-M3 User's Manual.
The following describes the centralized control system I/O points of the estimate.