40 Points PLC Transistor Output


LM3108 DC24V power supply, 24 Channels DC24V DI,16 Channels Transistor DO PLC
The installation method of the PLC system is divided into centralized, remote I/O type and distributed of multiple PLCs.
Centralized type does not need to be set to drive remote I/O hardware, system response is fast and low cost; remote I/O type is suitable for large-scale systems, and the system has a wide range of devices. Remote I/O can be installed in the vicinity of field devices. The line is short, but the driver and remote I/O power supply need to be added; the distributed of multiple PLCs is suitable for multiple devices to be independently controlled, and when it is necessary to connect with each other, a small PLC can be selected, but a communication module must be added.

• Rated Voltage: 24V DC
• 24 Channels DC24V DI, 16 Channels Transistor DO
• Program Memory Capacity: 120KB
• Interrupt Input: 3 Points
• Expandable I/O: 7 Modules

                 ► CPU Features

Local I/O

24 Channels DC24V DI, 16 Channels Transistor DO

Expandable I/O

7 modules

High-speed counter

Monophase counter: 3 points, 100KHz
       Biphasic counter: 2 points, 100KHz

Pulse output

2 point 20KHz

Pulse catch

3 points

Interrupt input

3 points

Analog potentiometer

2, value setting range 0~255

User program memory capacity

120K bytes

Retain area

6K bytes

Input data memory

512 bytes

Output data memory

512 bytes

Mid-variables memory

8K bytes

Global memory

24K bytes



Real-time clock



No limit (1ms as minimum unit)


No limit (Maximum counting range: 16 bit)

Basic instructions


Function blocks

Over 70

Operation speed

0.65μs (Basic instruction)

► Power Supply Specifications

Power supply

24V DC

Allowed range

21V DC~27V DC

Current consumption (MAX)


Output voltage

24V DC

Allowed range

22.8V DC~25.2V DC

Current output

+24VDC (To expansion bus)


+24V DC (To the outside)


+5V DC (To expansion bus)


Short circuit protection

900mA, 24VDC output

► Communication Features

Communication interface

2 (RS-232 and RS-485) (Non-isolating)

Communication protocol

Proprietary protocol/MODBUS/Free protocol

► Input Features

Input type


Input voltage rated value

24V DC

Allowed range

0V DC~30V DC

Logic 1 signal

15~30V DC

Logic 0 signal

0~5V DC

Input delay time

<0.6ms (Rated input voltage)

Isolation mode

Photo coupler isolation

Isolation group

3 groups

Maximum Isolation Voltage


 ► Output Features

Output type


Output voltage

24V DC

Allowed range

20.4V DC~28.8V DC

Transistor conduction voltage drop

<0.5V (Output logic “1”, current 1A)

Contact impedance


Logic “1” single point output maximum current


Logic “0” maximum leaking current


Common end output current total


Isolation mode

Photo coupler isolation

Isolation group

2 groups

Maximum Isolation Voltage


Response time (status “0” to “1” or “1” to “0”)

Common output<1ms
High-speed pulse output<10us

► Physical Features


200mm(L)×90mm(W)×70mm (H)



About company 

A global quality electric organization
In order to obtain the highest quality, all products are produced according to international standards IEC60898, IEC947-2

To be an enterprise lasting 150 years and beyond
To be an enterprise with a sales network all over 200 countries in the world.
To be the cooperative partner of General Electric

Better product, better service

Cooperation, Sharing, Win-win

Enjoy work, enjoy life.

1Q: How to order our product?  
A: 1) Please tell us the model and quantity and other request you need.  
    2) We make the PI for you.
    3) After you confirm the PI, we arrange the order for you after receiving your payment.
    4) After the goods finished, we send the goods out to you and tell you the tracking number.
    5) We will track your goods until you receive the goods.

2Q: About Company?
A:YUMO established in 2007, and have got great success with its professional working team, we has been specialized in digital products for over 10 years, and mainly about HMI, PLC Encoder sensor and other industrial control products.

3Q: How about the delivery?
A: It depends on the order details, and usually, we could support the delivery within 5-7 working days.

4Q: Where is your company located? How can I visit there?
A: Our factory is located in Wenzhou, China, about 2 hours ride from Wenzhou Airport. All our clients, from home and abroad, are warmly welcome to visit us!   

5Q: Does your product have a factory inspection?
A: Every product we send is strictly factory inspection.

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