IS200DSPXH2CAA机器人模块卡件
nds或记录系统或连接设备的基于数据的事件/动作。数据记录功能是SCADA遥测非常有用和重要的功能；它通过在整个数据采集期间检查状态和历史数据，使任务的监控和分析更容易。即使面对远程C/SCADA侧的网络连接问题，您也可以启用网关提供的数据日志代理功能，并继续进行数据采集，并将收集的数据存储在本地存储（.CSV文件格式）中。恢复网络连接后，管理员/用户可以通过FTP或web UI手动下载数据日志文件，以供进一步参考和维护。Modbus蜂窝网关提供完整的数据记录功能，用于收集Modbus交易数据以满足应用要求。有数据记录方案可满足不同的管理要求。它们是嗅探器模式、脱机代理模式、全职代理模式，以及嗅探器和代理组合的混合模式。启用嗅探器模式后，网关将监控和记录特定Modbus主站和相关从站之间的通信。它将Modbus通信存储为日志文件，管理员可以检查Modbus网关上的Modbus通信，以及EW200工业蜂窝网关197主端和从端之间的通信是否丢失。然而，如果Modbus网关和远程C/SCADA之间存在网络连接问题，远程Modbus服务器将无法访问连接到Modbus网关的从属设备，因此，在这种情况下，可以对其进行监控和存储。启用代理模式选项后，当Modbus网关失去与指定Modbus服务器的连接时，它将接管数据采集任务，并继续自动从从属设备收集所需数据。一旦连接恢复，Modbus网关将停止数据日志代理功能。远程Modbus服务器可以继续其数据采集过程，如果需要，管理员还可以检索存储的数据日志文件。在数据记录代理模式下，用户必须通过“代理模式规则配置”创建一些数据采集规则，以便通过网关收集从属设备数据。如果与远程SCADA的网络连接意外丢失，数据记录代理功能将被触发，并开始根据后台运行的这些预定义规则执行数据轮询任务。✓嗅探器模式数据记录的场景如图所示，Modbus网关将以下Modbus活动存储到日志文件中。l远程Modbus TCP主机发送的Modbus请求。l从轮询的从设备（ID=3）IP发送的响应（数据）：172.16.99.160 EW200工业蜂窝网关198离线代理模式数据记录场景如图所示，当与远程Modbus主机的连接断开时，Modbus网关将激活数据记录代理功能，并自行执行预定义的数据采集任务。l Modbus网关（数据记录代理）发出的Modbus请求。l从轮询的从属设备（ID=3）发送的响应（数据）。这些数据采集和数据记录活动每5秒重复一次，直到恢复连接。IP:172.16.99.160 EW200工业蜂窝网关199 4.2.1数据记录配置数据记录通常用于监测系统中，以收集和分析现场数据。通过正确配置，网关将根据指定的规则列表记录Modbus消息。转到Field Communication（现场通信）>Data Logging（数据记录）>Configuration（配置）选项卡。
nds or record the data-based events/actions of a system, or connected devices. The data logging function is a very useful and important feature for SCADA telemetry; it makes the monitoring and analyzing of tasks easier by checking the status and historical data during whole data acquisition period. Even facing network connection problems with a remote C/SCADA side, you can enable the data logging proxy function provided by the gateway and continue doing data acquisition and storing of the collected data in local storage (in .CSV file format). When the network connection is recovered, admin/user can download the data log files manually via FTP or web UI for further reference and maintenance. The Modbus Cellular Gateway provides a complete data logging function for collecting the Modbus transaction data for application requirements. There are data logging schemes to meet different management requirements. They are Sniffer Mode, Offline Proxy Mode, Full-Time Proxy Mode, and mixed modes for sniffer and proxy combinations. With Sniffer mode enabled, the gateway will monitor and record the communication among a specific Modbus Master and related slaves. It will store the Modbus communication as log files and the administrator can check what Modbus communication went over the Modbus gateway, and if there is any communication loss among EW200 Industrial Cellular Gateway 197 the Master and Slave sides. However, if there is a network connection problem between the Modbus gateway and remote C/SCADA, the remote Modbus server won’t be able to reach the Slave devices attached to the Modbus gateway, and consequently, thing can be monitored and stored under such situation. With the Proxy mode option enabled, when the Modbus gateway loses the connection with specified Modbus server, it will take over the data acquisition task and keep collecting the required data from Slave devices automatically. Once the connection is recovered, the Modbus gateway will stop the data log proxy function. The remote Modbus server can continue its data acquisition process, and if required, the administrator can also retrieve the stored data log files. Under the Data Logging Proxy mode, user must create some data acquisition rules via “Proxy Mode Rule Configuration” for the collecting of the Slave devices data by the Gateway. If the network connection to remote SCADA is lost unexpectedly, the Data Logging Proxy function will be triggered and begin to do the data polling tasks by these pre-defined rules running in background. Ø Scenario for Sniffer Mode Data Logging As Illustrated in the diagram, the Modbus gateway will store the following Modbus activities into a log file. l The Modbus request sent from Remote Modbus TCP Master. l The response (data) that is sent out from the polled Slave device (ID=3) IP: 172.16.99.160 EW200 Industrial Cellular Gateway 198 Scenario for Off-Line Proxy Mode Data Logging As illustrated, when the connection to a remote Modbus Master is broken, the Modbus Gateway will activate the data logging proxy function and execute the pre-defined data acquisition task by itself. l The Modbus request issued by the Modbus Gateway (Data Logging Proxy). l The response (data) sent out from the polled Slave device (ID=3) These data acquisition and data logging activities are repeated every 5 seconds until the connection is recovered. IP: 172.16.99.160 EW200 Industrial Cellular Gateway 199 4.2.1 Data Logging Configuration Data Logging is commonly used in monitoring systems to collect and analyze the field data. With proper configuration, the Gateway will record Modbus messages according to the specified rule list. Go to Field Communication > Data Logging > Configuration tab.
