1. synopsis

JMDM-COM20DI/jmctrl at msn dot cn is a high-reliable stability industrial-grade SCM digital and serial port controller which independent

research and development by Shenzhen jingmin digital machine Co.,Ltd. Onboard 20-channel optically isolated digital

signal input, can be used to detect all kinds of the external switch signals input, such as photoelectricity sensors

infrared sensors, hall sensor, proximity switch, Point switches and other digital input devices, the product has

the following characteristics:

1) Product design and quality: professional industrial-grade high-reliable anti-lightning resist the strong electromagnetic

high-frequency interference circuit design, the circuit layout is compact and reasonable, excellent heat dissipation, the

use of SMD chips and electronic components, the program of the product with high security and reliable industrial quality,

stable performance, can competent to a variety of large electromagnetic interference, harsh enviroment industrial occasions,

such as arc current, welding current, inverter and the other workplace can of steady use.

2) 20-channel optically isolated digital input characteristics:

2.1 20-channel optically isolated digital use the circuit design method of optically isolated, stable and reliable;

2.2 20-channel optically isolated digital input can be divided into four groups, can respectively use in the diffenrence

voltage occasions; each channel of the digital input of the input voltage range is 3.3V~24V; input the current range is

5-10MA; 

3) 2 kinds of communication interface for choosing: 1 RS485 serial port monitoring mode;

4) 3 kinds of working methods: support independant control,RS232 serial port monitoring and RS485 serial port monitoring

5) Precise time control: Comes with the system clock for precise time control;

6) System stability: with industrial grade anti-lightning, strong anti-electromanetism interference, high reliable

performance, no crash.

7) Digital working status indicator: each channel digital input has a indicator, convenient to observe the input point

working status.

8) Industrial housing, the compact appearance, dustproof and beautiful, integrated compact design, easy for installation:

rail or screw mount;

9) Provide easy to use serial port communication protocol, the host computer source code,the convenience of customers

for the secondary development.

2. Performance parameters

1) Working power: working power of the controller: 12V or 24V, AC/DC universal; input working power supply: 3~24V AC

circuit;

2) The main control chip: 8 bits high performance singlechip plus high speed and high stability FPGA programmable logic

arrey circuit.

3) Program memory space: 32K( if having special demands can use of 64K);

4) Data storage space: 16K( if having special demands can use of 32K); storage the data and the data will not lose

after the power off;

5) Input: 20 channal digital input, each channel input can up to endure the voltage of 36V and the maximum endure current

is 10MA, each of the input point are adopt the photoelectricity isolation, the isolation voltage is 1000V; The factory

defaults for active - low type (NPN type); the input point can customized into active-high type(NPN type) according to

the customers demands, please made it clear that before the purchase;

6) System stability: adopt the internal watchdog and the strict high-frequency filter characteristics, the system

is stable and reliable, the start-up time since crashes within 1ms; 

7) 2 kinds of communication mode(interference) for choose: 1 RS232 interface and 1 RS485 interface can be choosen

by short-circuit cap.

1 channel standard RS232 serial port communication interface( anti 15KV static impact), can directly peripheral

communication with computer and text display.etc; can download procedure by RS232 interface directly, no burner,

convenient for the procedure modify and upgrade; the maximum communication distance of RS232 is 10 meters;

1 channel standard RS485 communication interface( anti-15KV static impact and lightning strike), can be used for

RS485 to communicate and remote control, the maximum communication distance is 1.5KM.

8) Controller working status indicator: 2 LED lamp to display;

9) 2 dial switches: can set program status or program parameters according to the program demands;

10) Industrial shell: dustproof and beautiful, integrated compact design; convenient for installation: rail or screw

installation;

11) Shell size: shell: L*W*H: 145mm×90mm×40mm; internal control panel: L*W*H:122mm×86mm×

28mm;

(expand reading: JMDM serials industrial singlechip serial port controller having multitype for choosing:

JMDM-COM4DI2DOMR,JMDM-20DIOV2,JMDM-28DIOMT/MR,JMDM-COM20MR,JMDM-4DI16DOMT,JMDM-40DIOMR and so on;full output:

JMDM-COM4DOMR/KKG,JMDM-COM8MR,JMDM-COM40MR/MT and so on, in accordance with the analog input and output: JMDM-20DIO4AIO,

JMDM-10DIO10AIO,JMDM-16ADDA.)

3. Use

1) Can be used for the detection of a variety of external signal of the sensor input, such as photoelectricity sensor,

infrared sensor,Hall sensor, proximity switches, jog switches and the other digital input devices etc.

2) Widely used in large-scale intelligent interactive multimedia trade: large-scale virtual open book, magicBook,

electric open book, distance for open book, Magic open book, a virtual electronic open book, a virtual air electronic

open book, intelligent multimedia control wall, light and shadow interactive control, the LED interactive control of

virtual process control systems, such as advertising, exhibition hall application; can be used as intelligent multimedia

controller, interactive multimedia controller, projection interactive controller,

lihgt and shadow interactive controller, LED interactive controller, virtual air electronic intelligence multimedia

controller;

3) Can use the host computer serial port remote real-time monitoring the status of some digital signal and the

on-and-off status of all kinds of devices;

4) Can be used a variety of distributed control system, remote IO module,the digital capacity signal collection of the

remote control system;

5) Widely used in the on-and-off testing of the line, the quality detection of the line row.

4. Delivery issues

1) delivery list: controller, programming download line( attached), electronic version of the product information.

Independant control the electronic version of the product information: KEILC software and the tutorial, STC-ISP download

software, product information( sample programs, instructions and wiring diagram)

Serial port control electronic version of the product information:product information( jingmin serial port monitoring

software, communication protocol, instructions and wiring diagram), the host computer VC source code( can be obtainedin

the secondary development).

2)

Delivery way: express delivery, package standard: antistatic and shockproof carton.

5. After-sales service

1\Since the date of the product sold under the normal use of the hardware failure, one year warranty, repair cost is charged only after the warranty period. Due to natural forces and man-made damage, failure to use of the use, inappropriate operation, overhaul, or beyond the scope of abuse, such as caused by the failure, not covered under warranty

2\Gifts or accessories of the transformer, the serial communication line is consumable items not covered under warranty

3\Technical support: Provide remote telephone, network online technical support.