Third, the control system software The Siemens 802S CNC system is a complex multi-tasking real-time software. It adopts a modular structure. Each module is divided into its own tasks to form a specific functional module. The corresponding software is also modularized, and the functional module software structure is solidified in the CPU. The CNC unit of Siemens 802S CNC system is mainly composed of three modules, namely man-machine communication (MMC) module, numerical control module (NCK) and programmable controller (PLC) module. 1. Human Machine Communication (MMC) Module The Siemens 802S CNC system uses human-computer interaction processing technology to perform interactive processing of the user interface. The user chooses the working mode of the CNC system to input the corresponding data and commands. The CNC system provides feedback on the user's operation in real time, provides the user with the operating status of the system, provides corresponding operation and learning assistance, and when the operation error occurs. Information about errors and warnings when a fault occurs. The main menu of the Siemens 802S CNC system includes: 1) machining, 2) parameters, 3) program, 4) communication, 5) diagnosis. 2. CNC Module (NCK) The numerical control module includes numerical control functions of numerical control, such as decoding, pre-processing and interpolation processing of CNC machining programs, as well as CNC machining program editor, machining simulation, tool management, and fault monitoring and diagnosis functions. 3. Programmable controller (PLC) module The programmable controller module handles the logic control of the machine tool and the control of some other switching signals in the NC machining program. The PLC programming software of Siemens 802S CNC system adopts S7-200. Fourth, the system debugging and should pay attention to the problem: The application of the Siemens 802S CNC system in high pressure water jet cutting machines is based on standard lathe systems. According to the configuration of the hardware, the machine data, general machine data, axis related machine data, and channel related machine data are set accordingly. Modifying the machine data has a great relationship with the machine. The wrong setting of the parameters will cause the machine to behave confusingly. The machine tool modification effectively includes the following four situations: 1) so-immediately effective 2) cf-valid after validation 3) re-reset valid 4) po-power-on is valid. Different levels of machine data correspond to different effective modification settings. The PLC parameters are entered according to the configuration of the program from the "Diagnostics / Machine data / General machine data" parameter screen of the operator panel. The configuration of the PLC machine hardware corresponds to the setting of the corresponding machine data. The following problems should be noted in the application debugging of Siemens 802S CNC system: 1. The system requires that each axis has a limit switch in both directions (+/-) so that the NCK can monitor the limit in all working modes. After the stroke switch is hit, all axes must stop immediately. Only the overtravel axis is allowed to move in the opposite direction in JOG mode. Limit switches include hardware limit switches and software limit switches. If the hardware limit switch is exceeded, the PLC will notify the NC via IS's V380X1000.1/.0 and interrupt the movement of all axes. Each axis has two pairs of software limit switches that are set in the machine feed axis system via MD: POS_LIMIT_PLUS, POS_LIMIT_MINUS, POS_LIMIT_PLUS2, POS_LIMIT_MINUS2. 2. Configure a reference point deceleration control switch for each axis as needed. The X-axis switch is connected to I1.4 and the Z-axis switch is connected to I1.5. The NCK input (X20) is connected to a reference point proximity switch (BERO) for accurate reference point setting. Previous page next page Floor Pedal Lock,Accessories For Scaffolding,Caster Floor Lock Brakes,Caster Wheel Accessories Floor Lock JIANGSU SHENPAI CASTER CO., LTD , https://www.shenpaicaster.com