Program memory capacity: 8k.
Input / output points: maximum 256 points.
A scan cycle of PLC must pass through three stages: input sampling, program execution and output refresh.
PLC in the input sampling phase: first of all, in order to scan the sequence of all existing input latches in the input terminal of the state or input data read,
And write it into the corresponding input status register,
Refresh the input, then close the input port, enter the program execution stage FX3U-16MR/DS Servo motor series: low inertia, medium power.
Rated output: 0.5kw.
Rated speed: 2000r/min.
Electromagnetic brake: No.
Shaft end specification: Standard (straight axis).
Features: low inertia is widely used in general machinery FX3U-16MR/DS.
IP level: IP65.
Application example:
1, roller type feeding equipment.
2, loading / unloading equipment.
3, high frequency transmission system.
Abundant motor product line can optimize the performance of the machine.
Has a rich motor product line including a rotary servo motor, linear servo motor and direct drive motor. 8 slot, PID special substrate FX3U-16MR/DS.
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 .
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.
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 andd types of PLC should bee 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 FX3U-16MR/DS.
Taking into account the future adjustment and expansion,
In general should be estimaateed on the total number of points plus the amount of spare 20%~30% FX3U-16MR/DS.
The following describes the centralized control system I/O points of the estimate.
FX3U-16MR/DS Operation manual/Instructions/Model selection sample download link: /searchDownload.html?Search=FX3U-16MR/DS&select=5