2 slots.
Can be installed in the power supply unit for A series units installed QnA/.
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 A1SJ72QBR15  PDF.
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 A1SJ72QBR15 
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 cuurrent or voltage that is disconnected from the load A1SJ72QBR15  PDF A1SJ72QBR15  Manual .
It is through the output interface circuit to the internal digital circuit into a signal to make the load action or not action A1SJ72QBR15  PDF.
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 quantity of the controlled object,
Generally an input / output element to take up an input / output point MITSUBISHI User's Manual.
Taking into account the future adjustment and expansion,
In general should be estimated on the total number of points plus the amount of spare 20%~30% MITSUBISHI User's Manual.
The following describes the centralized control system I/O points of the estimate. Output type: transistor output, drain type.
Output points: 16 points.
OFF leakage current: 0.25mA.
Output protection function.
Rated load voltage / current: DC12V/DC24V/0 MITSUBISHI User's Manual. 5A.
EExternal connection: 2 wire A1SJ72QBR15  User's Manual.
According to the external connection mode and the external equipment input and output specifications,
Choose from a rich product lineup.
Finger protection through the upper part of the terminal,,
The human body will not be exposed to live parts,
Therefore, the terminal station type remote I/O module can be directly mounted to the machine tool A1SJ72QBR15  Manual .