针对S7-300 PLC安装手册 安装时候你绝对需要-For S7-300 PlC installed when you absolutely need

本控制系统以 1 个 SIEMENS S7-300 PLC 和 7 个 S7-200 PLC 作为控制核心。S7-300,为主站，7 个 S7-200 PLC 作为从站，各站之间使用 ProfiBus-DP 总线进行通讯。-The control system for1 SIEMENS S7-300PLC and 7 S7-200PLC as the control core. S7-300, main station,7 S7-200PLC as from the station, the s

S7-300,为主站，7 个 S7-200 PLC 作为从站，各站之间使用 ProfiBus-DP 总线进行通讯。-S7-300, main station,7 S7-200PLC as from the station, the station between the use of ProfiBus-DP bus communication.