HIMA F3 DIO 8/8 01模塊,F3 DIO 8/8 01使用過程
主CLX示例
主機CPU和掃描儀模塊之間的握手使用CMD控件完成（本地：Slot:O.Data[0]）、CMD參數(shù)（本地：Slot:O.Data[1]）和CMD Reply（本地：Slot:
一、 數(shù)據(jù)[1]）寄存器。以下示例顯示了如何與卡交互：
?通過讀取ModuleStatus寄存器（本地：插槽：
一、 數(shù)據(jù)[0]）。如果是（0xE0），請等待1秒鐘，然后將卡聯(lián)機。
?卡運行且總線尚未運行時，將總線置于運行模式模式
IMA F3 DIO 8/8 01模塊?通過在CMD控件中設置命令位，發(fā)出未完成的命令寄存器（本地：插槽：S.Data[0]。0）筆記主CLX示例必須包含在控制邏輯中除非您使用的是自動運行位。如果使用自動運行bit你仍應使用主CLX示例中的梯級4和5，以便能夠通過命令參數(shù)寄存器發(fā)出命令。參見第節(jié)10.2.3有關自動運行位的更多信息。
PfbMasSts\u位是全局狀態(tài)位。僅當所有從屬設備存在，并與主設備進行數(shù)據(jù)交換。如果你這樣做了當某些從屬設備丟失或不存在時，不想進入運行模式通信時，應將此位作為聯(lián)系人檢查添加到橫檔2
Main CLX Example
Handshaking between the Host CPU and the scanner module is done using the CMD Control
(Local:Slot: O.Data[0]), CMD Argument (Local:Slot: O.Data[1]), and CMD Reply (Local:Slot:
I.Data[1]) registers.
The following example shows how to interface with the card:
?
Check to see if the Card is offline by reading the ModuleStatus register (Local:Slot:
I.Data[0]). If it is (0xE0), wait one 1 second and then put the Card online.
?
Put the Bus in Run mode once the Card is running and the Bus is not already in Run
mode
?
Issue commands that are outstanding by setting the command bit in the CMD Control
register (Local:Slot: S.Data[0].0)
Note
The Main CLX Example must be included with your Control Logic
unless you are using the AutoRun bit. If using the AutoRun bit you
should still use rungs 4 and 5 from the Main CLX Example to be able to
issue commands through the Command Argument register. See section
10.2.3 for more information on the AutoRun bit.
Note
The PfbMasSts_Bit is the Global Status bit. It will be set only if all
slaves are present and in data exchange with the Master. If you do
not want to enter Run mode while some slaves are missing or not
communicating, you should add this bit as an Examine On contact to
rung 2
