Because the liquid crystal technology change rapidly, the daily life is everywhere visible footprint LCD control panel, so the LCD in the production process is more important. So in the product manufacturing plant, the stability monitoring and control equipment requirements are relatively higher. In the conveyor belt to ensure that each production equipment in the best condition and increase the speed of production and efficiency, especially in the transport system, if the system is not stable, may cause the shipment is not smooth, the joint effect of LCD panel plant production, thereby reducing the profits. The monitoring system of stable and fast, will be the future trend. DeviceNet is a kind of low cost communication connection. It will be the industrial equipment (such as: limit switches, photoelectric sensors, valves, motor starters, sensor, barcode reader, variable frequency drives, panel display and operator interface) is connected to the network, so as to eliminate the traditional direct wiring more expensive, reducing the complexity of monitoring system itself. Direct interconnection not only to improve the communication between devices, and at the same time provides device level diagnostic function is very important, this is the hard wired I/O interface is very difficult to achieve. At the same time, the system uses Hongge company provided by the PISO-CAN200 DeviceNet card DeviceNet bus as main control device, DeviceNet host (Master) and the end (slave) of the powerful, not only can send out control command can receive commands and then make a decision and order the correct match, more Hongge company PISO-PS400 the high-speed four axis motion control card system (Motion Card), the control of mechanical arm operation, remote from the end (slave) using Beckhoff PLC is used to control the emergency stop switch, the digital contact, and the implementation of some simple control, there is also other DeviceNet devices such as the mechanical handling, transportation and other arms the sensor component, can be directly through the DeviceNet bus and PC communication, the connection of these devices constitute a stable security monitoring system.
The system architecture:
PISO-CAN200: for DeviceNet host controller
PISO-PS400: for DeviceNet host controller
DeviceNet Slave: Beckhoff PLC
DeviceNet Slave: Robot
DeviceNet Slave: other sensing module and the switch of the magnetic valve (can be extended to any elastic sensing module and I/O module)