鮑伯的PLC事件 (Bob's Blog)

由於S7-1200是內建RJ45的Ethernet，所以兩台以上的PLC，要做資料交換當然是使用Switch。
所以西門子已提供範例程式，供各位看倌參考囉！

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Automation task自動化需求:
Data is to be transferred between two S7-1200 CPUs via Ethernet.
The task is divided into the following two cases.
兩台S7-1200透過Ethernet網路，達到資料交換的需求.
資料交換有兩種不同方案.

Task 方案A
Independently of the data type, data with a fixed data length is to be transferred from one S7-1200 PLC to another.
單獨的資料格式且固定資料長度,由一台S7-1200傳到另一台PLC.

Task 方案B
A dynamically changeable number of data elements is to be transferred from one array of an S7-1200 PLC to another.
可變的資料區,以陣列的方式由一台S7-1200傳到另一台PLC.

架構圖

Automation solution 任務A
Using使用

• ◎the T communication blocks with integrated connection management (TSEND_C / TRCV_C)
  主要指令:TSEND_C / TRCV_C

• ◎via TCP
  通訊協定:TCP
  

• ◎2 bytes of absolutely addressed data
  
  

Automation solution 任務B
Using使用

• ◎the T communication blocks with manual connection management (TCON, TSEND, TRCV, TDISCON)
  主要指令:TCON, TSEND, TRCV, TDISCON

• ◎via ISO-on-TCP
  通訊協定:ISO-on-TCP

• ◎1 array with 3 elements of symbolically addressed data

Downloads下載點

Content of the downloads下載內容說明	下載
Configuration Example 17 V1.1 (Description) CE-X17範例說明
Startup Code V1.0 with control program for task A (necessary software: STEP 7 Basic V10.5) 第一個範例A
Startup Code V1.0 with control program for task B (necessary software: STEP 7 Basic V10.5) 第二個範例B

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Siemens SIMATIC PLC S7-400 S7-300 S7-1200 S7-200 LOGO HMI 西門子 自動化

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