The first example of programming a material transport cart controlled by PLC 1、 Control requirements There are 6 workbenches in a certain workshop, and the feeding truck travels back and forth between workbenches to feed. Each workbench is equipped with a position switch (SQ) and a breathing button (SB). The specific control requirements are as follows: (1) The feeding truck should be able to stop at any of the six workstations at the position of the in place switch. (2) Assuming the feeding vehicle is currently suspended at workstation m (SQ m is ON), workstation n will call (SQ n is ON). If: （a） m>n ， Drive the feeding vehicle to the left until SQ n moves and stops in place. When the number of the stop position SQ of the feeding vehicle is greater than the number of the call button SB, the feeding vehicle runs to the left until it reaches the call ...

KUKA Basic Instruction User Manual 1、 Connect the library card 1. Ensure that the library card is properly connected to the computer, and can be connected via Ethernet or serial port. 2. Open the library card control software, connect button, select the correct port, and establish a connection with. 2、 Introduction to Basic Instructions Legal terms and annotations: 1. According to the definition of ISO 8373 standard, it is an automated operating device that can perform physical tasks of human work. 2. PTP: The abbreviation for Point to Point, representing linear motion from point to point. 3. Circ: The abbreviation for Circle, representing circular motion. 4. LIN: The abbreviation for Linear, representing linear motion. 5. IO: The abbreviation for Input/Output, representing input/output instructions. 6. DO: abbreviation for Digital Output, rep...

Henghe DCS system instrument panel status Instrument circuit status MAN Manual state RCAS Remote cascading status AUT Automatic state PRD Primary direct regulation CAS Cascade state CAL Instrument calibration mode       Internal parameters of Yokogawa DCS system instrument panel PV Process measurement values GW broadband SV set value DB dead zone MV Output Value CK gain P proportion CB deviation compensation I points DL Deviation alarm setting D differential VL Change rate alarm setting SVL Set the lower limit position HH High high alarm setting SVH Set high limit position PH High alarm setting OPHI Output high limit index PL Low alarm setting OPLO Output low limit index LL Low low alarm setting MSH MV range upper limit PMV Pre set output settings for use with PSW=3 MSL...

The program protection methods for S7-1500 and S7-300/400 are not exactly the same 1. Read protection In the hardware configuration, open PLC Properties - Protection to set access permissions as needed. When selecting three protection levels other than "full access permission (no protection)", an access password needs to be set. Protection level: No protection, write protection, read-write protection, fully protected (password required for upper computer communication) 2. Protection of proprietary technology for program blocks The 1500CPU program blocks, including OB, FC, and FB, all support encryption functionality. DB also supports encryption function. After encryption, the attribute is read-only, and variables can be seen, but they cannot be added or deleted. Right click on the program block that needs to be protected, click on proprietary technology protec...

1、 Module Introduction CB1241RS485 allows the S71200 CPU to connect to other Modbus devices through this module, achieving the communication function of the S71200 Modbus RTU master station. The CB1241 RS485 module also supports communication connections such as USS and point-to-point PtP. The appearance of this module is shown in the following figure. The wiring terminals and connections for the CB1241 RS485 module are as follows: 2、 Configuration Introduction This example introduces the installation of CB1241RS485 module with two CT Uni SP drivers on S71200 CPU1215DC/DC V4.0 CPU. 1. Open TIA V13 software, create a new project, specify the project name and storage path. Click on the 'Left Explorer Window' Select 'Add New Device' in the 'Add CPU Type' section. In this example, select the S71200 1215 DC/DC C...

With the continuous development of computer control technology, the application of editable logic controllers is also becoming increasingly popular, becoming an important component of automation technology. Among them, Siemens S7 series PLCs also account for a large proportion in industrial control in China. As an intuitive and convenient way of human-computer interaction, touch screens have been widely used in industrial control. In the long-term use process, the author found that many people are unfamiliar with data communication between different models of PLCs, as well as between Siemens PLCs and third-party touch screens. This article will use specific examples to illustrate how to use Ethernet to achieve communication between MCGS touch screens and Siemens S7 series PLCs, laying the foundation for industrial automation control systems. 1 Hardware compos...

Accept the fully connected MAC solenoid valve structure and perform element leakage sealing throughout the entire pressure range, making it easier for the pipeline  system to perform ball cleaning and pipeline maintenance. Accept special molding process, lining the lining material on the inner wall of the valve housing, which can  withstand the erosion of strong acid and alkali media. The valve structure consists of a full bore floating ball type (two-stage) and a full bore fixed ball type  (three-stage), which are important for cutting off or connecting corrosive media in pipelines, and can be used for fluid adjustment and control.     The characteristic of MAC solenoid valve is that the valve seat sealing ring is composed of multiple layers of stainless steel sheets on both sides of a soft T-shaped  sealing ring.   The sealing surface betw...

1. On site inspection   Regular on-site inspections can effectively identify problems and provide timely maintenance. The inspection content includes the working status of the frequency converter and distribution equipment, the flow rate of the cooling system, the condition of the cooler, the temperature, and the ventilation status Control the contact status of signal lines, wiring terminals, etc. If there are any abnormalities, they should be dealt with promptly.   2. Maintain cleanliness   The frequency converter mainly emits heat through air cooling, so the module surface, fan, and ventilation holes must be kept clean. If not cleaned for a long time, it will reduce the heat dissipation effect of the inverter, and in severe cases, it will Overheating can cause accidents and also affect the service life of the frequency converter.   3. Keep the cable in goo...