ENTERASYS A2H254-16 P0973BK网络交换机
如果命令操作需要数据，则必须使用有效数据写入命令数据寄存器。所选命令将在收到有效传输后立即执行。消息格式和示例：对PQM执行重置（操作代码1）。功能代码16-广播命令在多个设备菊花链的应用程序中，可能需要通过发送一个命令来同步所有设备中的时钟（日期和/或时间）。广播命令允许如下示例所示的同步。如果从属地址以0消息格式发送，则PQM将识别为广播命令。示例：向PQM发送广播命令，以存储1:27:10.015 pm从属地址1 00广播命令（地址=0）功能代码1 10存储多个设置点数据起始地址2 00 F0从地址00F0设置点数量2 00 04 4个设置点=8字节字节字节字节总计BYTE计数1 08 8字节数据数据1 2 0D 1B小时（24小时格式），分钟
The Command Data registers must be written with valid data if the command operation requires data. The selected command will be executed immediately upon receipt of a valid transmission. MESSAGE FORMAT AND EXAMPLE: Perform a reset on PQM (operation code 1).Function Code 16 - Broadcast Command In applications where multiple devices are daisy chained, it may be necessary to synchronize the clocks (date and/or time) in all the devices by sending one command. The broadcast command allows such synchronization as shown in an example below. The PQM will recognize a packet as being a broadcast command if the SLAVE ADDRESS is transmitted as 0.MESSAGE FORMAT AND EXAMPLE: Send broadcast command to the PQM to store 1:27:10.015 pm SLAVE ADDRESS 1 00 broadcast command (address = 0) FUNCTION CODE 1 10 store multiple setpoints DATA STARTING ADDRESS 2 00 F0 start at address 00F0 NUMBER OF SETPOINTS 2 00 04 4 setpoints = 8 bytes total BYTE COUNT 1 08 8 bytes of data DATA 1 2 0D 1B hours (24 hour format), minutes
