Description
9853-610 TRICONEX controller
9853-610 TRICONEX controller
Module Clips Drive controller servo motor
Contact: Mr. Lai
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What are the characteristics of a demonstration system based on IO Link slave stations
IO Link is an industrial communication interface that is independent of any fieldbus and suitable for simple sensors and actuators at the lowest level of industrial control. The IO Link system includes IO Link devices (such as sensors and actuators), IO Link master stations, and cables for standard sensors. The system structure is shown in Figure 1. For example, when a remote IO module compatible with EtherNet/IP serves as the master station, in addition to standard I/O signals, the module sends and receives configuration data, diagnostic data, or enhanced process data through a pulse modulation process, which is then packaged into EtherNet/IP data packets and finally transmitted to the network master station, usually a PLC. In the above applications, the connection between remote I/O and IO Link devices remains the same as that of traditional discrete devices. The advantage of IO Link mainly lies in its greater information exchange capability, which was previously impossible to achieve with standard I/O devices. Another advantage of IO Link is that it does not rely on any fieldbus, and through any I/O module that complies with the IO Link protocol (including local I/O and remote I/O), IO Link sensors or actuators can be integrated into any fieldbus system.
In order to further study the architecture, communication mechanism, and development application of the IO Link system, an IO Link slave toolkit can be designed and developed, including a universal development module for IO Link, an IO Link analysis tool, and an IO Link slave protocol stack. The IO Link universal development module is the foundation for this work and also serves as a bridge between the IO Link master station and equipment signals. The IO Link analysis tool can help developers and testers analyze communication details to identify and solve problems. The IO Link slave protocol stack is a firmware library that provides a hardware abstraction layer and application program interface, allowing developers to easily and quickly develop IO Link slave products on various microprocessor platforms. The IO Link slave station studied in this article only focuses on digital (button) signal input and digital signal output (indicator light). The design of the IO Link universal development module only needs to be expanded on this basis to have the ability to process analog signals.
The IO Link Master module used in this article, USB IO Link Master, can connect IO Link devices to a PC, which can be configured and tested through the IO Link Device Tool software or demonstrated device functionality. IO Link devices must be described through a device description file (IODD file), which includes a set of XML text files and PNG graphic files, which contain information about device identification, communication characteristics, parameters, process data, and diagnostic data. The portion within the elliptical dashed line in Figure 2 is an IO Link three wire cable, with L+/I – being a 24 V DC power supply and C/Q being a signal line used to transmit process data, diagnostic data, configuration data, etc. The IO Link universal development module is mainly composed of data transceivers and microprocessors. It can process input signals from sensors and transmit information to the IO Link master station. It can also receive and process data information from the master station and transmit it to the actuator. The IO Link analysis tool can help developers view, record, analyze data, and understand communication details. This part of the design is not discussed in this article.
Introduction to IO Link Communication Mode9853-610 TRICONEX controller
IO Link devices can operate in SIO mode (standard I/O mode) or IO Link mode (communication mode). After power on, the device always operates in SIO mode. The port of the main station has different configuration methods. If configured in SIO mode, the main station considers the port as a standard digital input. If configured in communication mode, the main station will automatically identify the communicable devices for communication.
2.1 Data Types9853-610 TRICONEX controller
The three basic data types for IO Link communication are periodic data (or process data PD), non periodic data (or service data SD), and event.
The process data (PD) of the device is transmitted periodically in the form of a data frame, while service data (SD) is only exchanged after the master station issues a request. Figure 3 shows a typical IO Link message structure. When an event occurs, the “event flag” of the device is set, and the main station reads the reported event (service data cannot be exchanged during the reading process) upon detecting the setting. Therefore, events such as pollution, overheating, short circuits, or device status can be transmitted to the PLC or visualization software through the main station
2.2 Parameter data exchange
Since service data (SD) must be transmitted through PLC requests, SPDU (Service Protocol Data Unit) is defined. In the main station, requests for read and write services are written to SPDU and transmitted to devices through the IO Link interface.
The general structure of SPDU is shown in Figure 4, and its arrangement order is consistent with the transmission order. The elements in SPDU can take different forms depending on the type of service. SPDU allows access to data objects that are intended for transmission, while Index is used to specify the address of the requested data object on the remote IO Link device. In IO Link, there is a term called direct parameter page, which stores parameter information such as minimum cycle time, supplier ID, and master station commands. The data objects accessible in the direct parameter page can be selectively provided through SPDU.
HMT7742 is an IO Link slave transceiver chip that serves as a bridge between the MCU of external sensors or actuators and the 24V signal line that supports IO Link communication. When the IO Link device is connected to the master station, the master station initializes communication and exchanges data with the MCU. HMT7742 serves as the physical layer for communication.
Due to the fact that the three indicator lights (rated voltage 24 V) controlled by the output port of the MCU are powered by the IO Link power cord, it is necessary to monitor the current on the power cord in order to trigger appropriate corrective measures when the current exceeds a set threshold, such as removing the indicator lights from the IO Link power cord. The current monitoring module uses an INA194 current detection amplifier. As a high detection current detector, INA194 is directly connected to the power supply and can detect all downstream faults. It has a very high common mode rejection ratio, as well as a large bandwidth and response speed. It can amplify the voltage on the induction resistor 5O times and output it to the forward input terminal AIN0 of the MCU internal voltage comparator. When the voltage value of AIN0 exceeds the threshold set at the reverse input terminal, By controlling the low level output of PB0, the indicator LAMP can be cut off from the IO Link power line to achieve overcurrent protection function. This part of the circuit is shown in Figure 6.
How to Build High Channel Density Digital IO Modules for the Next Generation Industrial Automation Controllers
With the rapid development of industrial automation, digital IO modules have become an indispensable part of industrial automation controllers. The digital IO module can connect the controller with external devices, such as sensors, actuators, etc., to achieve monitoring and control of industrial production processes. However, with the continuous development of industrial automation, digital IO modules need to have higher channel density and stronger functionality to meet the needs of new industrial automation controllers. Therefore, it is very important to build high channel density digital IO modules for the next generation of industrial automation controllers.
The digital IO module is one of the most fundamental modules in industrial automation controllers, and its main function is to connect the controller with external devices to achieve signal input and output. The digital IO module usually includes two parts: a digital input module and a digital output module. The digital input module can convert the digital signals of external devices into signals that the controller can read, while the digital output module can convert the digital signals output by the controller into signals that external devices can read. The channel density of a digital IO module refers to the number of digital input or digital output channels provided on the module, which is the input and output capacity of the module.
With the development of industrial automation, digital IO modules need to have higher channel density and stronger functions to meet the needs of new industrial automation controllers. The following are several aspects to consider when building a high channel density digital IO module for the next generation of industrial automation controllers:9853-610 TRICONEX controller
1. Choose the appropriate communication protocol
Digital IO modules typically communicate with controllers through communication protocols, so choosing a suitable communication protocol is crucial. Common communication protocols include Modbus, Profibus, CANopen, Ethernet, etc. Different communication protocols have different advantages and disadvantages, and selecting a suitable communication protocol requires considering the following factors:
(1) Communication speed: The faster the communication speed, the shorter the response time of the digital IO module, which can process input and output signals faster.
(2) Communication distance: The farther the communication distance, the wider the application range of digital IO modules.
(3) Reliability: The reliability of communication protocols determines the stability and reliability of digital IO modules.
(4) Cost: Different communication protocols have different costs, and suitable communication protocols need to be selected based on actual needs.
2. Choose the appropriate digital IO chip
The digital IO chip is the core component of the digital IO module, and its performance and function directly affect the channel density and function of the digital IO module. Choosing a suitable digital IO chip requires considering the following factors:
(1) Channel density: The channel density of digital IO chips determines the channel density of digital IO modules, and channel density needs to be selected based on actual needs.
(2) Input/output type: Digital IO chips usually support digital input and digital output, and some chips also support functions such as analog input and output, counters, etc.
(3) Speed: The speed of the digital IO chip determines the response speed of the digital IO module, and it is necessary to choose a chip with a faster speed.
(4) Accuracy: The accuracy of digital IO chips determines the signal accuracy of digital IO modules, and it is necessary to choose chips with higher accuracy.
(5) Cost: Different digital IO chips have different costs, and suitable chips need to be selected based on actual needs.
3. Optimize circuit design
The circuit design of digital IO modules has a significant impact on their performance and stability. In order to improve the channel density and functionality of digital IO modules, it is necessary to optimize circuit design, such as:
(1) Using high-speed digital IO chips: Using high-speed digital IO chips can improve the response speed and accuracy of the module.
(2) Adopting anti-interference design: In order to improve the stability of the digital IO module, it is necessary to adopt anti-interference design, such as using filters, isolators, etc.
(3) Using optimized PCB layout: Optimizing PCB layout can reduce noise and interference in digital IO modules, improve module performance and stability.
4. Choose the appropriate shell material and size
Digital IO modules typically need to be installed in cabinets or control cabinets, so choosing the appropriate housing material and size is crucial. The shell material should have good protective and heat dissipation properties to protect the circuits of the digital IO module from external environmental influences. The shell size should be able to adapt to different installation environments, such as cabinets, control cabinets, etc.
5. Optimize software design
The software design of the digital IO module determines its functionality and performance. In order to achieve high channel density and stronger functionality, it is necessary to optimize software design, such as:
(1) Supporting multiple input and output types: Supporting multiple input and output types can meet different application needs, such as digital input and output, analog input and output, counters, etc.
(2) Supporting multiple communication protocols: Supporting multiple communication protocols can adapt to different controllers and application environments.
(3) Support for online debugging and monitoring: Supporting online debugging and monitoring can facilitate user diagnosis and maintenance of modules.
(4) Support for expansion function: Supporting expansion function can increase the functionality and application range of the module while ensuring channel density.
In summary, building a high channel density digital IO module for the next generation of industrial automation controllers requires multiple considerations, including selecting suitable communication protocols, selecting suitable digital IO chips, optimizing circuit design, selecting suitable shell materials and sizes, and optimizing software design. Only by comprehensively considering these factors can a digital IO module with high channel density and stronger functionality be constructed to meet the needs of new industrial automation controllers.
How to assign IO devices to IO controllers?
PROFINET IO system
The PROFINET IO system consists of a PROFINET IO controller and its assigned PROFINET IO devices. After adding IO controllers and IO devices, it is necessary to assign IO controllers to the IO devices to form a basic PROFINET IO system.
Prerequisite requirements
● Already in the network view of STEP 7.
A CPU has been placed (e.g. CPU 1516-3 PN/DP).
● An IO device has been placed (e.g. IM 155-6 PN ST)
Operating Steps (Method 1)
To assign IO devices to IO controllers, follow these steps:
1. Move the mouse pointer over the interface of the IO device.
2. Hold down the left mouse button.
3. Drag the mouse pointer.
The pointer will now use the networking symbol to indicate the “networking” mode. At the same time, you can see a lock character appearing on the pointer
Number. The lock symbol only disappears when the pointer moves to a valid target position.
4. Now, move the pointer to the interface of the desired IO controller and release the left mouse button.
5. Now assign the IO device to the IO controller.
Operating Steps (Method 2)
To assign IO devices to IO controllers, follow these steps:
1. Move the mouse pointer over the word “Unassigned” in the bottom left corner of the IO device icon.
2. Click the left mouse button.
3. Select the IO controller interface to be connected from the available interfaces that appear.
4. Now assign the IO device to the IO controller.
Definition of IO Link Protocol and Its Interface
IO Link is a peer-to-peer, serial digital communication protocol designed for periodic data exchange between sensors/actuators and controllers (PLCs). The IO Link protocol was first proposed by Siemens and has now become an international standard IEC 61131-9. With the advancement of Industry 4.0, the use of IO Link is becoming increasingly widespread. Today”s article will introduce the definition of the IO Link protocol and its interfaces.
Factory automation can be divided into execution layer, on-site layer, on-site control layer, workshop control layer, and management layer according to functional division. As shown in the following figure:
The execution layer includes various execution mechanisms (valves, pumps, motors, etc.) and sensors, which are the muscles and peripheral nerves of factory automation. They receive commands from the upper layer and complete specified actions.
The on-9853-610 TRICONEX controller site layer includes various distributed IO9853-610 TRICONEX controller systems, which are the central nervous system of factory automation. It conveys control instructions from the upper layer to the execution layer; And feedback the signals from the execution layer to the control layer, serving as the information center;
The on-site control layer includes various PLC systems, which are the brains of factory automation. It issues corresponding instructions and commands the execution layer to complete corresponding actions based on internal program requirements and signal feedback from the execution layer;
The workshop control layer (MES) and management layer communicate with various PLC systems at the management level to complete management tasks at the workshop and factory levels.
The IO Link protocol to be introduced in this article is a protocol that transfers data between the execution layer and the field layer. An IO Link system consists of the following components:
1) IO Link Master;
2) IO Link Device;
3) Non shielded 3-5 core standard cable;
4) Tools for configuring IO Link parameters;
The IO Link Master transfers data between the IO Link device and the PLC. It is usually a distributed IO module with IO Link connection channels on the module. The IO Link Device is connected to the channel of the IO Link Master through a cable, and the IO Link Master exchanges data with the PLC through a bus. As shown in the following figure:
Every IO Link device needs to be connected to a channel of the IO Link supervisor, so IO Link is a peer-to-peer communication protocol, not a bus protocol.
IO Link devices are divided into two types: sensors and actuators: sensors are usually the four pin interface of M12, and actuators are usually the five pin interface of M12.
According to IEC 60974-5-2, the definition of IO Link Device pins follows the following regulations:
1) Pin 1 (PIN1): 24V power supply positive pole;
2) Pin 3 (PIN3): 0V
3) Pin 4 (PIN4): IO Link communication or standard IO output;
The pin definition of the IO Link device is shown in the following figure:
Which types of equipment should PLC module manufacturers develop first?
We know that PLC, also known as programmable logic controller, collects variable data through various IOs to achieve the purpose of automated control. Therefore, developing PLC is largely about developing IO. However, with so many types of IO, which PLC module manufacturers should develop first? Let me share my opinion:
1. Digital input IO, including PNP and NPN digital input IO, counter input IO, etc.
2. Digital output IO, including PNP and NPN digital output IO, PWM pulse output IO, relay output IO, and so on.
3. Analog input IO, including current acquisition input IO, voltage acquisition input IO, temperature acquisition input IO, and so on. The current input IO can collect currents ranging from 0 to 20 milliamperes, while the voltage input IO can collect voltages ranging from negative 10V to positive 10V. Temperature acquisition IO includes thermocouples and thermal resistors.
4. The style of analog output IO is similar to that of analog input IO, but does not include temperature analog, mainly voltage and current type.
What exactly does embedded development do?
Embedded development is a technology similar to programming, but our understanding of the scope of programmers is to do computer software, web development, and also to do apps.
The majority of embedded development is intelligent electronic products, which are designed for hardware programming. This hardware can be understood as a circuit board, usually composed of a controller (processor) chip and different circuits.
The specific program and circuit are generally determined by the product function. For example, an electronic clock product is usually composed of a digital tube and a microcontroller (controller), and then written in C language to download it to the microcontroller to achieve clock display.9853-610 TRICONEX controller
Of course, there are far more products that can be developed in embedded systems, including smartphones, wearable devices, drones, robots, mice and keyboards, and so on.
The knowledge system of embedded development and design is also very diverse, and different products require different learning contents.
So, if we want to enter embedded development, we must first understand several directions of embedded development, otherwise you will never find a starting point.
The general mainstream directions are microcontroller development, ARM+Linux development, and FPGA/DSP development.
I have been working on microcontroller development for the past 10 years of my career.
Microcontrollers can be said to be the foundation of all directions. If you have strong microcontroller development capabilities, then ARM+Linux, or FPGA/DSP are easy for you to get started.
The development of microcontrollers is also one of the directions with the lowest threshold for embedded systems. Initially, I was self-taught in electrical engineering and transferred there. It took me about four months from the beginning of my studies to finding a job.
However, at that time, the threshold was still very low, and you could basically find a job by working on a small project with a 51 microcontroller.
If it”s the current situation, you only know these things and have little competitiveness. Nowadays, the main focus of enterprises is on whether you have project experience, rather than what kind of microcontroller you know.
The project experience can be accumulated through practical projects with endless microcontroller programming, which can be said to be the closest to actual development at present.
At present, the salary of single-chip microcontrollers is not low, and it is normal for them to start at 8K in first tier cities, and they can reach 15K after working for 2-3 years.
There are many industries covered by embedded systems, and in the later stage, based on work, we will only focus on one direction. From a macro perspective, we will divide it into embedded software development and embedded hardware development. Software development is mainly based on application software development on systems (Linux, VxWorks, WinCE, etc.), and hardware development includes motherboard design, system porting, cutting, and writing low-level drivers
My personal experience started with microcontrollers. Firstly, I studied C and C++, digital and analog electronics, power electronics, circuit design, microcontroller principles, FreeRTOS, data structures, and computer operating systems. Later, due to work requirements, I relearned university automation control theory, signals and systems, complex functions, linear algebra, calculus, statistics, and compiler principles. These are all basics, and it is important to understand and thoroughly study them, This will bring help to the later research and development work, and there is also a need for more drawing board, drawing board, and practical operation. Without practicing optics, the efficiency is very low, and knowledge is repetitive. Only by repeatedly looking and using can we understand. We can buy some development boards to assist in learning. Now that the internet is developed, network resources can improve our learning efficiency.
Embedded development refers to developing under an embedded operating system, commonly used systems include WinCE, ucos, vxworks, Linux, Android, etc. In addition, develop using C, C++, or assembly; Using advanced processors such as arm7, arm9, arm11, powerpc, mips, mipsel, or operating systems also belongs to embedded development.
1. Basic knowledge:
Purpose: I can understand the working principles of hardware, but the focus is on embedded software, especially operating system level software, which will be my advantage.
Subjects: Digital Circuits, Principles of Computer Composition, and Embedded Microprocessor Architecture.
Assembly Language, C/C++, Compilation Principles, Discrete Mathematics.
Data structure and algorithms, operating systems, software engineering, networks, databases.
Method: Although there are many subjects, they are all relatively simple foundations and most of them have been mastered. Not all courses may be taught, but elective courses can be taken as needed.
Main books: The C++programming language (I haven”t had time to read it), Data Structure-C2.
2. Learning Linux:
Purpose: To gain a deeper understanding of the Linux system.
Method: Using Linux ->Linxu system programming development ->Driver development and analysis of the Linux kernel. Let”s take a closer look, then the main topic is principles. After reading it a few times, look at the scenario analysis and compare it deeply. The two books intersect, with depth being the outline and emotion being the purpose. Analysis is version 0.11, suitable for learning. Finally, delve into the code.
Main books: Complete Analysis of Linux Kernel, Advanced Programming in Unix Environment, Deep Understanding of Linux Kernel, Scenario Analysis, and Source Generation.
3. Learning embedded Linux:
Purpose: To master embedded processors and their systems.
Method: (1) Embedded microprocessor structure and application: Direct arm principle and assembly are sufficient, without repeating x86.
(2) Embedded operating system class: ucOS/II is simple, open source, and easy to get started. Then delve deeper into uClinux.
(3) Must have a development board (arm9 or above) and have the opportunity to participate in training (fast progress, able to meet some friends).
Main books: Mao Decao”s “Embedded Systems” and other arm9 manuals and arm assembly instructions.
What are the advantages of Ethernet remote IO modules that can be cascaded?
Advantages and specific application scenarios of Ethernet remote IO modules that can be cascaded
For scenarios where data collection control points are linearly distributed, such as streetlights, bridges, streetlights, digital factories, parking lot parking monitoring, smart parking lots, smart parking racks, and building automation control systems in smart parks, using cascading dual Ethernet remote IO modules saves more costs than using single Ethernet remote IO modules.
The Ethernet remote IO module that can be cascaded is a new type of Ethernet remote IO module that supports MAC layer data exchange and can achieve hand in hand connection. This not only saves switch interfaces, but also reduces a large amount of Ethernet cable costs, wiring space, and wiring costs.
Its advantages are as follows:9853-610 TRICONEX controller
1. No need for a large number of Ethernet switches or occupying Ethernet switch ports;
2. It can save a lot of Ethernet cables, cable space, and labor costs for installing cables;
3. The overall cost has significantly decreased;
4. Supports both Modbus RTU protocol, Modbus TCP protocol, and the Internet of Things protocol MQTT protocol;
5. Support TCP Server and TCP Client services;9853-610 TRICONEX controller
6. Can be connected to SCADA systems, PLC systems, or cloud platforms;
7. The series uses a MAC layer for data exchange, ensuring that network connectivity does not cause communication issues with subsequent devices due to device failures in the middle.
The comparison between cascaded Ethernet remote IO modules and traditional IO modules used in building automation systems is shown in the following figure:
1. Adopting a cascaded dual Ethernet remote IO module, data acquisition and control wiring for floors with a height of 70 meters only requires a 70 meter Ethernet cable;
2. Using a traditional single Ethernet remote IO module, the data acquisition and control system wiring for a 70 meter high floor requires a 280 meter Ethernet cable.
It can be seen that using cascaded dual Ethernet remote IO modules can save a lot of wiring costs compared to traditional single Ethernet remote IO modules.
Application of Ethernet Remote IO Module in Building Automation System
For building automation systems, each data acquisition control point is linearly distributed in each floor. Therefore, it is very suitable to use Ethernet remote IO modules that can be cascaded to achieve data acquisition and control.
The Ethernet remote IO module that can be cascaded supports MAC layer data exchange and can achieve a hand in hand connection method. This can not only save switch interfaces, but also reduce a large amount of Ethernet cable costs, wiring space, and wiring costs.
Its advantages are as follows:
1. No need for a large number of Ethernet switches or occupying Ethernet switch ports;
2. It can save a lot of Ethernet cables, cable space, and labor costs for installing cables;
3. The overall cost has significantly decreased;
4. The M160E supports both Modbus RTU protocol, Modbus TCP protocol, and the Internet of Things protocol MQTT protocol. In addition, it also supports TCP Server and TCP Client services; Can be connected to SCADA systems, PLC systems, or cloud platforms;
4. The M160E series uses a MAC layer for data exchange, ensuring that network connectivity does not cause communication issues with subsequent devices due to device failures in the middle.
Comparison between cascaded Ethernet remote IO modules and traditional IO modules for building automation systems:
1. Adopting a cascaded dual Ethernet remote IO module, data acquisition and control wiring for floors with a height of 70 meters only requires a 70 meter Ethernet cable;
2. Using a traditional single Ethernet remote IO module, the data acquisition and control system wiring for a 70 meter high floor requires a 280 meter Ethernet cable.
Therefore, we can conclude that for scenarios where data collection control points are linearly distributed, such as streetlights, bridges, streetlights, digital factories, parking lot parking monitoring, smart parking lots, smart parking racks, and building automation systems in smart parks, using cascading dual Ethernet remote IO modules saves more costs than using single Ethernet remote IO modules.
1.Has been engaged in industrial control industry for a long time, with a large number of inventories.
2.Industry leading, price advantage, quality assurance
3.Diversified models and products, and all kinds of rare and discontinued products
4.15 days free replacement for quality problems
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