SIMATIC S7-300
（使用帶 PROFIBUS DP 接口的 CPU 或 PROFIBUS DP CP）
SIMATIC S7-400
（使用帶 PROFIBUS DP 接口的 CPU 或 PROFIBUS DP CP）
SIMATIC C7
（通過(guò)配有 PROFIBUS DP 接口的 C7，或通過(guò) PROFIBUS DP CP）
SIMATIC S5-115U/H、S5-135U 和 S5-155U/H，帶 IM 308
SIMATIC 505
出于性能原因，每條線路上連接的主站不得超過(guò) 2 個(gè)。
以下設(shè)備可作為從站連接：
ET 200 分布式 I/O 設(shè)備
S7-300，通過(guò) CP 342-5
CPU 313C-2 DP，CPU 314C-2 DP，CPU 314C-2 PN/DP，CPU 315-2 DP，CPU 315-2 PN/DP，CPU 317-2 DP，CPU 317-2 PN/DP 和 CPU 319-3 PN/DP
C7-633/P DP，C7-633 DP，C7-634/P DP，C7-634 DP，C7-626 DP，C7-635，C7-636
現(xiàn)場(chǎng)設(shè)備
雖然帶有 STEP 7 的編程器/PC 或 OP 是總線上的主站，但是只使用 MPI 功能，另外通過(guò) PROFIBUS DP 也可部分提供 OP 功能。

如果 CPU 發(fā)出狀態(tài)信號(hào) “DEFECTIVE” （所有 LED 閃爍），您可以選擇保存信息以分析 CPU 狀態(tài)。
此信息存儲(chǔ)在診斷緩沖區(qū)及實(shí)際服務(wù)數(shù)據(jù)中。
選擇“目標(biāo)系統(tǒng) -> 保存服務(wù)數(shù)據(jù)” (Target system -> Save service data) 命令讀取該信息，并將數(shù)據(jù)保存到文件中以便轉(zhuǎn)發(fā)給客戶支持部門。
如果 CPU 處于 “DEFECTIVE” 狀態(tài)（所有 LED 閃爍）下，請(qǐng)關(guān)閉電源再打開（關(guān)閉/打開電源）。

結(jié)果： CPU 現(xiàn)在處于 STOP 模式。

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