OKUMA E4809-770-065-A伺服驱动放大器
DNP端口：选择用于DNP协议的适当PQM端口。只有在PQM中安装了T1或T20选项时，COM2选项才可用。每个端口的配置如图4–4：设置点第1页–PQM设置/通信端口第4–7页所示。•DNP从属地址：为此特定PQM输入从0到255的唯一地址。所选地址应用于当前分配使用DNP协议通信的PQM端口。尽管地址不必是连续的，但菊花链连接在一起的两个PQM都不能具有相同的地址，否则会有冲突导致错误。通常，添加到链接的每个PQM将使用下一个更高的地址。•DNP周转时间：如果使用RS232端口，则将周转时间设置为零。周转时间在使用无RTS或DTR开关的RS485转换器的应用中非常有用。延迟的典型值为30ms，以允许变送器在RS485转换器中下降。
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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