P0972SEPXI模块数据库工控DCS系统

P0972SEPXI模块数据库工控DCS系统通过可编程控制器中的适当梯形逻辑，应用程序还可以使用虚拟机架间接监控本地I/O的状态或梯形逻辑定义的存储位的状态。DEM软件能够监控和模拟实际机架和虚拟机架的任何组合，较多可达32个I/O机架。这受所用可编程控制器类型的限制。例如，PLC-5/20较多扫描三个远程机架。P0972SEPXI模块数据库工控DCS系统

P0972SEPXI模块数据库工控DCS系统With appropriate ladder logic in the programmable controller, an application can also use a virtual rack to indirectly monitor the status of local I/O or the state of storage bits defined by the ladder logic. The DEM software is capable of monitoring and emulating any combination of real and virtual racks up to a total of 32 I/O racks. This is subject to the limits imposed by the type of programmable controller used. For example, the PLC-5/20 scans a maximum of three remote racks.P0972SEPXI模块数据库工控DCS系统