SST-PFB3-VME控制模塊,SST使用書
軟件可編程硬件中斷提供了八個軟件可編程硬件中斷通過VMEchip2。這些中斷允許軟件創(chuàng)建硬件中斷。本地總線超時MVME187為本地總線提供超時功能。什么時候計時器啟用，本地總線訪問超時，傳輸錯誤確認（TEA）信號被發(fā)送到本地總線主機。這個超時值可由軟件選擇8微秒、64微秒、256微秒、，或無限。
SST-PFB3-VME控制模塊本地總線計時器在VMEbus期間不工作綁定周期。VMEbus綁定周期由VMEbus計時訪問計時器和VMEbus全局計時器。內(nèi)存映射內(nèi)存映射有兩種觀點：1、本地總線內(nèi)存映射–本地總線查看的所有資源的映射大師級
2.VMEbus內(nèi)存映射–VMEbus查看的車載資源映射本地總線內(nèi)存映射本地總線內(nèi)存映射通過以下方式拆分為不同的地址空間：傳輸類型（TT）信號。當?shù)刭Y源對正常訪問和中斷確認代碼。
正常地址范圍設備響應正常地址的設備的內(nèi)存映射范圍如下表所示。正常地址范圍為由本地總線上的傳輸類型（TT）信號定義。? 在MVME187上，傳輸類型0和1定義法線地址范圍。
第2-25頁的表2-5是從$00000000到$FFFFFF。地圖的許多區(qū)域是用戶可編程的，并且建議的用途如表所示。
? 高速緩存抑制功能可在MMU中編程。
? 板載輸入/輸出空間必須標記為緩存抑制和在其頁面表中序列化。
第2-26頁的表2-6進一步定義了本地輸入/輸出的映射設備。
and the corresponding material kilogram will be automatically converted by PLC and imported into the system for application. The curve rate is obtained according to the weight of the test weight and the curve characteristics of the module (see the instruction description of the module curve rate for details).
PLC: the program adopts wplsoft2 35 ladder diagram software. It includes four main parts: system setting, analog quantity acquisition, automatic operation and manual operation. Scan the ladder diagram during operation, automatically jump and switch according to external instructions, and execute continuously.
Process control:
The console is equipped with manual / automatic transfer switch, emergency stop button, on-board quantity input button, automatic operation start button, system reset button, etc. For manual operation, each mechanism can be controlled independently.
On board quantity input button: each time you press it, the on-board quantity counter will automatically increase by one, and long press it to clear the data. You can also input the value directly through the touch screen. System reset button: clear the non power failure storage area register to return the system to standby state.
According to the construction requirements, input the corresponding data command through the man-machine interface, press the automatic operation start button, and the system will operate automatically and continuously. The operation process is divided into three stages: batching, feeding, mixing and concrete unloading.
1. Batching: the automatic operation start contact triggers the batching and metering of 4 aggregates, cement, chemicals and water. After the aggregate batching is completed, the system detects the hopper position. When the hopper is at the lower limit, the weighing belt is fed, and the weighing belt timer is started. When the time reaches, it will stop
