FOXBORO FBM217 P0916CA电压监测器模块
b） 计算机输入运行EnerVista PQM设置时，设定值在屏幕上分组。数据被组织在一个菜单系统中。有关详细信息，请参阅第6章：软件。c） 第7章：MODBUS通信中给出了读取和写入设定点的完整通信协议的Scada条目详细信息。连接到RS485终端的SCADA系统可以定制编程，以使用任何通信命令进行远程设定点编程、监控和控制。3.3.9设定点访问安全PQM包含软件安全，以防止未经授权的设定点更改。必须输入数字访问代码，以使用前面板键编程新的设定点。要启用设置点访问安全功能，用户必须输入1到999范围内的值。
b) Computer Entry When running EnerVista PQM Setup, setpoint values are grouped together on a screen. The data is organized in a system of menus. See Chapter 6: SOFTWARE for further details. c) Scada Entry Details of the complete communication protocol for reading and writing setpoints are given in Chapter 7: MODBUS COMMUNICATIONS. A SCADA system connected to the RS485 terminals can be custom programmed to make use of any of the communication commands for remote setpoint programming, monitoring, and control. 3.3.9 Setpoint Access Security The PQM incorporates software security to provide protection against unauthorized setpoint changes. A numeric access code must be entered to program new setpoints using the front panel keys. To enable the setpoint access security feature, the user must enter a value in the range of 1 to 999.
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