1. IntroductionJMDM-PLC8DI4DOMR is Shenzhen Jingmin Digital Machine Co.,Ltd. independentresearch and development of industrial grade of high performance, smallprogrammable logic controller. Suitable for digital quantity under 12 channelsof the demand for small PLC control of industrial occasions, direct to use thesoftware GX programming with mitsubishi ladder diagram, have power to maintainand online monitoring functions, with lightning protection, strongelectromagnetic interference resistance, stable and reliable, highly cost-effective, simple and easy for use, can instead of foreign brands of PLC usedin various control occasions within 12 points, the application of mitsubishiFX1N; Can be flexible used in all kinds of industrial automati controloccasions, such as metallurgy, chemical, plastics, printing, textile, food,packaging and other industries in the production of machinery, industrialassembly line, all kinds of machine tools in the industrial control equipment.2. Performance parameter
1). Programming software is compatible with Japan's mitsubishi GXDeveloperladder diagram software, in the application is equal to mitsubishi FX1N (C);
2). Working power supply: with the lightning protection circuit. Can be workedunder the DC 12V or 24V. Working power universal current (AC 9V or AC 18V canalso work). Working voltage depends on the board of the relay coil.
3). The PLC board has 12 channels optoelectronic isolation I/O input andoutput, 8 channels input, 4 channels output.
4). The machine adopts high-performance imports of industrial grade chipdesign, can adapt to high electromagnetic interference industrial environment(250A discharge welding occasion to work normally.
5). High speed operation, basic instruction 0.5 uS per step.
6). Communication interface with RS232 (15 kv static shock resistant)
8). 8000 step program register.
9). Shell adopts screw or guide installation, integration of compact design.Shell size: length x width x height: 115 mm * 100 mm * 30 mm; Internal controlboard size: length x width x height: 92 mm * 86 mm * 28 mm;
10). System adopts photoelectric isolation and enable internal watchdog andstrict high frequency filter characteristics, with professional power supplymonitor circuit make the system stable and reliable work.
11). Can on-line monitoring, convenient debugging and fault diagnosis.3. Usage
(1). Programming software: Use with the product attached to the MitsubishiGXDevelopment, selection of PLC type is: FX1N (C);
(2). Working power supply: With the lightning protection circuit; mixed typeoutput need single 24V(1A) DC power supply or double 9V(1A) AC power supply, 4 channels relay output need 24V or 12V, universal current.
(3). Lights: two, the power indicator light, running lights.
(4). Control board has a toggle switch, toggle switch going (ON) forprogramming, the operation indicator light point not flashing, playing up(OFF) for running state, when the running lights flicker interval of 500 ms.
(5). Input/output description: 8 channels whole photoelectric isolationdigital quantity input, input of NPN, low level effectively; 4 channels relayoutput for relay output form, the maximum operating current is 8A, the maximumworking voltage is 220V, the relay has 12V and 24V , determines the workingpower supply of the controller, relay life is 200000 ~ 400000.
(6). Can monitor online, convenient debugging and fault diagnosis.
(7). Easy to install, use convenient installation fixed hole. The integrationof the compact design.
(8). Controller download program to choose range setting, such as 0~2000steps; not more than 8000 steps.
(9). Program at the END to END with END statement.4. Application
1). Can be used for a variety of control system  within 12 points, can controlcylinder, solenoid valve, relay, can be external photoelectric, capacitive andinductive, Hall type and so on various sensors;
2). Can be used to replace the foreign brands of PLC within 12 points tocontrol the various occasions (such as all kinds of machine control), highcost-effective.
3). Can be used in the study and test of PLC.