Shulou(Shulou.com)06/01 Report--

This article mainly explains "what has been updated by SSIO". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn what has been updated by SSIO.

1.SSIO updates:

Add data distribution mode (DeliveryMode), when the network communication is asynchronous, after receiving the data, you can distribute the data to the device according to the device IP or the device address, so as to drive the device to run.

Originally, data can only be distributed according to the device IP, but considering that the device terminal may be a GPRS module, the IP itself is not fixed, so it is added to distribute the data to the device according to the device address.

12345678910 public enum DeliveryMode / Distribution data mode / public enum DeliveryMode {[EnumDescription ("device IP Distribution data")] DeviceIP, [EnumDescription ("device address Distribution data")] DeviceAddress}

2.SSIO features:

1) lightweight high-performance communication framework, which is suitable for a variety of application fields, polling mode, automatic control mode, concurrent mode and singleton mode.

2) the scene of device driver, IO channel and control mode is coordinated and unified.

3) device driver Neixuan command driver, command buffer, custom parameters and real-time data elements.

4) the framework platform supports scheduling according to the priority of device commands to ensure that high-level commands are sent in time.

5) A device driver supports both serial port and network communication, and can monitor IO channel data.

6) A device driver, which can support both TCP Server and TCP Client working modes when communicating on the network.

7) built-in display view interface to meet different display requirements.

8) built-in service component interface, which can customize the completion of OPC service, 4-20mA output, LED large screen display, SMS service, and multi-function gateway service.

9) you can create multi-service instances to split different businesses.

10) supports cross-platform deployment and can run on Linux and Windows systems.

Overview of 3.SSIO

The design idea of SSIO communication framework is developed on the basis of SuperIO (SIO), and there is no high-end technology, mainly the accumulation of work experience, which is suitable for data acquisition and interaction of the Internet of things in different application scenarios. SSIO and SIO are not simple high-performance operations for IO, but the coordination mechanism among device drivers, IO channels, control modes and actual hardware devices, seamless connection and operation between all aspects, but also to solve some pain points in real work and application scenarios.

The data interaction between software and hardware, and faced with a complex field environment:

(1) complex and diverse communication protocols. There are standard protocols, such as Modbus, etc., and there are also many protocol formats modified according to standard protocols, as well as custom protocol formats, which vary widely. For bad software architecture, struggling to deal with, adding devices or protocols to sort out the whole software, new problems or BUG often arise in the process.

(2) according to the different users' requirements for the software interface or function, the data display interface can be customized to meet the display requirements of different users. Then it is necessary to provide a display view interface to interact with the device driver.

(3) since the data of the field equipment has been collected, it needs to be processed, not only saving, querying, reporting, etc., but also: data forwarding, data output (OPC, analog, large screen, etc.). Then you need to provide a service interface to interact with the device driver.

(4) due to the variety of communication links, it may be necessary to support RS232/RS485/RS422, RJ45, 3G/4G and other communication modes for the same device, so for a device to correspond to multiple communication modes (serial port and network), it also causes great obstacles to our development.

(5) the link between device driver, IO channel and actual field hardware terminal is complex, it is possible that one device driver corresponds to one IO channel, one device driver corresponds to multiple IO channels, and multiple device drivers correspond to one IO channel.

(6) since the equipment exchanges data with the server, the communication status of the device, the IO status, and the status of the device itself should be monitored so that the equipment can be maintained.

(7) the compatibility between the software versions and the software and hardware is very poor, and the management is complicated. When the framework platform is stable, only the device driver needs to be updated.

In order to solve the above problems, a software framework is developed to support secondary development. Without changing the software framework, it can easily access the equipment, maintain the equipment, integrate the equipment, process the business data of the equipment and so on. The software framework is relatively stable and the parts that are easy to change are designed flexibly.

At this point, I believe you have a deeper understanding of "what has been updated by SSIO". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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