3.2 CI/CM PROFIBUS modules

CI/CM PROFIBUS模板

The AC 900F is designed for operation with different PROFIBUS communicationinterfaces like the CI 930F, CI 773F and CM 772F that can be connected on the leftside of the PM CPU module。

AC 900F 專為具有不同 PROFIBUS 通訊的操作而設計，像CI 930F、CI 773F和CM 772F這樣可以在左側連線PM CPU模組的一側。

PROFIBUS communication interfaces ensure communication via the PROFIBUSDPFieldbus. The internal coupler bus connects the CI/CM with the CPU module.This applies to data and power supply. A dual-port RAM is used for data exchange

PROFIBUS通訊介面確保通過PROFIBUS DP現場匯流排進行通訊。內部耦合器匯流排將CI/CM和CPU模板連線起來。這適用於資料和電源（指的是通過內部耦合器）。雙埠RAM適用於資料交換。

3.2.1 CI 930F PROFIBUS-DP Master Interface

CI 930F PROFIBUS-DP主站介面

The below description applies to CI 930F with ordering numbers 3BDH....R0002and ....R0005 only. CI 930F provides two on-board PROFIBUS interfaces A/B forincreased availability regarding PROFIBUS communication

以下描述僅適用於訂貨編號為3BDH....R0002和3BDH....R0005 的CI 930F，CI 930F提供了兩個板載PROFIBUS介面A/B以提升PROFIBUS通訊可用性。

LEDs for status display LED狀態顯示燈

Label 標籤

PROFIBUS Interface A Profibus通訊介面A

PROFIBUS Interface B Profibus通訊介面B

Data arriving at CI 930F via the coupler bus are routed in parallel to both A and Bconnections. The first data coming in over line A or line B with a correct telegramstart are routed to the coupler bus. With simultaneity, either line A or line B isselected at random. Testing and selection is always based on the first character. Inthe case of a telegram start with error on A, the control logic in CI 930F switches tothe redundant line B. The same procedure applies vice-versa for line B.

資料通過耦合器匯流排到達 CI 930F ， A 和 B 連線為平行路由。線路A或者線路B是第一批使用正確報文開頭的資料到耦合器匯流排的路徑。伴隨同步性，選擇線路A還是線路B是隨機的。測試和選擇始終基於第一個字元、在報文開頭出錯的情況下，CI930F的控制邏輯會切換到線路B，同樣的道理，如果B線路出錯，會自動切換到A。

LED status displays

LED燈狀態顯示

After having been switched on, the CI 930 PROFIBUS module performs a self-testduring power-up. During initialization, with newly configured modules or after achange of the operating mode, all LEDs may light up briefly before reaching thedefined status.

上電後，CI 930 PROFIBUS模板執行自檢。在初始化過程中，使用新配置的模組或在操作模式更改後，所有 LED 可能會在達到定義狀態之前短暫亮起。

Line redundancy OFF

LED A (line A)