the short-connected mode, each request is a separate access, so there is no reconnection, in the long-connected mode, if this request fails, the next time the request, it will automatically reconnect to the server until the request is successful. In addition, as far as possible, all reading and writing are judged on the success of the results.About LoggingTemporarily just reserved the interface, specifically can be implemented by themselvesabout the two types of agreementsThis component support
The programmable controller produced by Siemens in Germany is widely used in China, and has been used in metallurgy, chemical industry, printing production line and other fields. Siemens PLC products include logo,s7-200,s7-300,s7-
PLC Siemens S7-300
I have been using step 7 for a few days. Now I want to record the learning content for the system.1. S7-300 hardware structure
S7-300 or S7-400 PLC is modular
Release date:Updated on:
Affected Systems:Siemens SIMATIC S7-1200 3.xSiemens SIMATIC S7-1200 2.xSiemens SIMATIC S7-1200Description:--------------------------------------------------------------------------------Bugtraq id: 57023SIMATIC S7-1200 is a new PLC launched by
S7-300 PLC Siemens
This is the second video study note of Yang Shengfeng.
1. Digital Volume Module
1) Digital Volume input module
The digital input module converts the Digital Signal levels sent during the field process to the internal signal levels of the S7-300.
A. Digital Input module sm321 (external 24 V power supp
1
Introduction
Siemens Industrial Control products have a high market share in the industrial control field, S7-200 series PLC is one of the members of the siemens simatic plc family, in the application of Siemens Industrial Contr
. directly supported PLCs include Mitsubishi, Siemens s7-200,s7-300,s7-400, Omron, Delta and standard Modbus master-slave protocol .3. Can also be connected through the Modbus communication Panasonic PLC, Yonghong plc, Schneider
memory relay area (AR), Link relay area (LR), Timer/timer zone (TC), System Settings Area (DM). (? The individual is understood as the relay in the PLC equivalent to the registers in the other controller, because the special auxiliary relay zone can be pushed, the Siemens 200 plc in the SM Relay is a certain symbol of the systemTake
Three ways of Siemens PLC serial communication
time: 2015-10-25-14:31:55 Edit: Electrician section: Siemens PLC
Introduction: Siemens PLC serial communication Three ways, divided into RS485 serial communication,
1. You can write and read the register values (byte, word, and dual-word );
2. You can set and reset components (v, M, S, Q, And I;
3. the on/off status of the component (v, M, S, Q, And I) can be read.
4. PLC Operation and stop can be controlled.
Published the popular PPI protocol on the Internet. Although this protocol is incorrect, the idea is correct.
There are many ways to communicate between Siemens
. For example:
B. Step 7 Communication Module Settings
Right-click the CP343-1 module-object properties, General-interface-properties to set Ethernet parameters, such:
If the "set MAC address/use ISO protocol" option is selected, the PLC can communicate through the MAC address using ISO protocol.
C. Download the compiled program to the PLC, for example:
4. WinCC and program connection in
In the industrial field by the PLC remote control inverter application is very common, if the trench wiring inconvenience or frequency converter on the mobile device, then the use of wireless communication is the best solution. The benefits of this program are: No operating costs, no card, autonomous group network, distance, can pass through obstacles, bypassing the barrier, wireless transmission distance of more than 3 kilometers. Here we use
through TCP/IP or ISO. For example:
B. Step 7 Communication Module Settings
Right-click the CP343-1 module-object properties, General-interface-properties to set the number of Ethernet metrics, for example,:
If the "set MAC address/use ISO protocol" option is selected, the PLC can communicate with the ISO protocol through the MAC address license.
C. Download the compiled program to the PLC, for example:
S7-300 PLC Siemens
This article is a small program of learning S7-300, used for the simple and intuitive understanding of PLC Development.
1. circuit diagram of three Asynchronous Motors
2. PLC control wiring diagram
We can see
Recently in the study of Siemens PLC superior industrial Control software communication, in addition to OPC server, Prodave two, to understand that Siemens Ethernet Communication template provides a Fetch/write communication based on TCP, this way without PLC side programming can get all the data in
Functional directives and Applications (S7-200)• Transfer class Instructions• Operational instructions• Sub-Program• Clock Instructions• Interrupts· PID Instruction• Communication InstructionsI. Transfer, SHIFT, fill instructions1. Transmission class1-1: Single Transfer (MOVE): Instruction Format (mov* in,out//*:b, W, DW (LAD) D (STL), R) function Description: When the Enable input is valid, the data is transmitted from in to the storage cell data typ
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