FOXBORO FBM217 P0916CA電壓監(jiān)測器模塊
b） 計算機輸入運行EnerVista PQM設置時，設定值在屏幕上分組。數據被組織在一個菜單系統(tǒng)中。有關詳細信息，請參閱第6章：軟件。c） 第7章：MODBUS通信中給出了讀取和寫入設定點的完整通信協(xié)議的Scada條目詳細信息。連接到RS485終端的SCADA系統(tǒng)可以定制編程，以使用任何通信命令進行遠程設定點編程、監(jiān)控和控制。3.3.9設定點訪問安全PQM包含軟件安全，以防止未經授權的設定點更改。必須輸入數字訪問代碼，以使用前面板鍵編程新的設定點。要啟用設置點訪問安全功能，用戶必須輸入1到999范圍內的值。
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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