OKUMA E4809-770-065-A伺服驅(qū)動(dòng)放大器
DNP端口：選擇用于DNP協(xié)議的適當(dāng)PQM端口。只有在PQM中安裝了T1或T20選項(xiàng)時(shí)，COM2選項(xiàng)才可用。每個(gè)端口的配置如圖4–4：設(shè)置點(diǎn)第1頁(yè)–PQM設(shè)置/通信端口第4–7頁(yè)所示。?DNP從屬地址：為此特定PQM輸入從0到255的唯一地址。所選地址應(yīng)用于當(dāng)前分配使用DNP協(xié)議通信的PQM端口。盡管地址不必是連續(xù)的，但菊花鏈連接在一起的兩個(gè)PQM都不能具有相同的地址，否則會(huì)有沖突導(dǎo)致錯(cuò)誤。通常，添加到鏈接的每個(gè)PQM將使用下一個(gè)更高的地址。?DNP周轉(zhuǎn)時(shí)間：如果使用RS232端口，則將周轉(zhuǎn)時(shí)間設(shè)置為零。周轉(zhuǎn)時(shí)間在使用無(wú)RTS或DTR開(kāi)關(guān)的RS485轉(zhuǎn)換器的應(yīng)用中非常有用。延遲的典型值為30ms，以允許變送器在RS485轉(zhuǎn)換器中下降。
DNP PORT: Select the appropriate PQM port to be used for DNP protocol. The COM2 selection is only available if T1 or T20 option is installed in the PQM. Each port is configured as shown in FIGURE 4–4: Setpoints Page 1 – PQM Setup / Communication Ports on page 4–7. ? DNP SLAVE ADDRESS: Enter a unique address from 0 to 255 for this particular PQM. The address selected is applied to the PQM port currently assigned to communicate using the DNP protocol. Although addresses do not have to be sequential, no two PQMs that are daisy chained together can have the same address or there will be conflicts resulting in errors. Generally each PQM added to the link will use the next higher address. ? DNP TURNAROUND TIME: Set the turnaround time to zero if the RS232 port is being used. The turnaround time is useful in applications where the RS485 converter without RTS or DTR switching is being employed. A typical value for the delay is 30 ms to allow the transmitter to drop in the RS485 convertor.
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