MVME4600脈沖輸入卡件
選擇ABB。從Select OPC Server（選擇OPC服務器）對話框中選擇SMP，然后單擊OK（確定）。OPC Server DriveWindow 2 7-37現(xiàn)在您可以在瀏覽樹窗格中看到連接到DDCS/UDP設備的驅(qū)動器。如果要查看用于連接到DDCS網(wǎng)絡的設備類型和設備的IP地址（如果有），請瀏覽瀏覽樹窗格中的“屬性”->“通信”，并查看項目集窗格中瀏覽的項目集。另請參閱：DDCS/UDP設置連接到OPC服務器OPC服務器7-38 DriveWindow 2 7.2 DDCS/UDP配置請注意，如果DDCS/UDP的配置包含無效值，對話框中的“確定”按鈕將變灰。通信組它包含：?DDCS/UDP組，用于啟用或禁用所選當前配置的DDCS/UDP通信。通常，默認情況下禁用DDCS/UDP通信。?用于設置廣播搜索方法的按鈕（近設備和Intranet設備）。OPC服務器DriveWindow 2 7-39 UDP端口組它包含：?Number，這是用于DDCS/UDP通信的PC UDP端口號。所定義的端口不得被PC的防火墻阻止。請注意，如果默認端口61332被阻止，則配置對話框的查找功能將不起作用，因為查找始終使用端口61332。?選擇，允許在連接時另一個應用程序保留已定義的端口號的情況下搜索并使用空閑端口。搜索范圍為49152…65535。這意味著該范圍內(nèi)的任何端口都不能被PC設備忙組的防火墻阻止。當連接到NETA-21時，需要一段時間才能進入DDCS網(wǎng)關模式。Device Busy（設備忙）組定義此等待的設置：?wait Timeout（等待超時）是電腦等待NETA-21進入網(wǎng)關模式的最長時間。?輪詢間隔定義PC在進入DDCS網(wǎng)關模式時檢查NETA-21忙狀態(tài)的頻率。OPC服務器7-40 DriveWindow 2設備主控組一次只能有一個應用程序使用DDCS/UDP設備的DDCS網(wǎng)絡?？蛻舳苏埱笤O備的主控權。只有擁有主控權的客戶端才能使用DDCS網(wǎng)絡。所有其他都被設備拒絕。但是，如果在指定時間內(nèi)沒有DDCS流量，設備將自動釋放主控權。設備主控權組定義此行為的設置：?看門狗超時是DDCS/UDP設備在DDCS流量停止時自動釋放主控權之前等待的時間。?強制意味著連接的客戶端獲得主控權，即使另一個客戶端已經(jīng)擁有主控權。這意味著其他客戶端不能再通過DDCS網(wǎng)絡進行通信。通常，在客戶機崩潰而未釋放其主控權的情況下，您使用強制。遠程子網(wǎng)大小組遠程子網(wǎng)的大小為2z，其中z是遠程掩碼中的零位數(shù)。因為遠程子網(wǎng)設備是通過查詢IP和遠程子網(wǎng)指定的子網(wǎng)中的每個IP地址來搜索的，所以對于大型子網(wǎng)，啟動時間可能非常長。
Select ABB.SMP from the Select OPC Server dialog box and click OK. OPC Server DriveWindow 2 7-37 Now you see the drives connected to the DDCS/UDP devices in the browse tree pane. If you want to see the device type used for connecting to a DDCS network and the IP address of the device (if it has one), browse to Properties -> Communication in the browse tree pane and look at the browsed item set in the item sets pane. See Also: DDCS/UDP Settings Connecting to OPC Server OPC Server 7-38 DriveWindow 2 7.2 DDCS/UDP Settings Note that if a DDCS/UDP setting contains an invalid value the OK button in the dialog box is grayed. Communication group It contains: ? DDCS/UDP group, which is used to enable or disable DDCS/UDP communication for the selected Current configuration. Typically, DDCS/UDP communication is disabled by default. ? Buttons (Near Devices and Intranet Devices) for settings of the broadcast search methods. OPC Server DriveWindow 2 7-39 UDP Port group It contains: ? Number, which is the PC UDP port number used for DDCS/UDP communication. The port defined must not be blocked by the firewall of the PC. Note that if the default port 61332 is blocked, the Find functionality of the configuration dialog boxes does not work because Find always uses port 61332. ? Selection, which allows searching and using a free port in case the defined port number is reserved by another application at connection time. The search range is 49152...65535. It means that none of the ports in the range must be blocked by the firewall of the PC. Device Busy group When connection to a NETA-21 is made, it takes time before it enters into the DDCS gateway mode. The Device Busy group defines settings for this wait: ? Wait Timeout is the maximum time that the PC waits for a NETA-21 going to the gateway mode. ? Poll Interval defines how often the PC checks the busy status of a NETA-21 while it is going to the DDCS gateway mode. OPC Server 7-40 DriveWindow 2 Device Mastership group Only one application can use the DDCS network of a DDCS/UDP device at a time. The client requests mastership of the device. Only the client having mastership can use the DDCS network. All others are rejected by the device. However, if there is no DDCS traffic for a specified time, the device automatically releases the mastership. The Device Mastership group defines settings for this behaviour: ? Watchdog Timeout is the time that the DDCS/UDP device waits before it automatically releases the mastership when DDCS traffic ceases. ? Force means that the connecting client gets the mastership even if another client already has it. It means the other client can no more communicate through the DDCS network. Typically you use forcing in a case where a client has crashed and not freed its mastership. Remote Subnet Size group Size of a remote subnet is 2z , where z is number of zero bits in the Remote Mask. Because remote subnet devices are searched by querying each IP address in the subnet specified by IP and Remote Subnet, start-up time may be very long for large subnets.
