PROSOFT MVI69-AFC 計(jì)算機(jī)模塊
標(biāo)志位輸入所需位置的標(biāo)志位存儲(chǔ)器中的字節(jié)偏移量。計(jì)時(shí)器和計(jì)數(shù)器輸入所需計(jì)時(shí)器或計(jì)數(shù)器的編號(hào)。數(shù)據(jù)塊輸入所需數(shù)據(jù)塊的編號(hào)。位ID數(shù)據(jù)元素中所需的位數(shù)。數(shù)據(jù)類型訪問數(shù)據(jù)所需的格式。此字段取決于所選的地址類型。某些地址類型的訪問權(quán)限有限，如果特定的數(shù)據(jù)類型不適用于所選的地址類型，則會(huì)顯示為灰色。字符串大小要訪問的字符串的大小。輸入S7 PLC中定義的字符串的確切大小。這僅適用于STRING的地址類型。MVI69-AFC（傳輸列表）是指定可編程控制器之間要傳輸?shù)臄?shù)據(jù)的傳輸列表。傳輸列表包含傳輸列表的唯一名稱、一組傳輸和傳輸錯(cuò)誤選項(xiàng)。傳輸時(shí)錯(cuò)誤指定掃描儀處理傳輸?shù)姆绞?。傳輸錯(cuò)誤時(shí)包括以下錯(cuò)誤選項(xiàng)：MVI69-AFC參數(shù)描述任何傳輸錯(cuò)誤時(shí)中止傳輸列表。Continue中止生成錯(cuò)誤的傳輸，但繼續(xù)執(zhí)行傳輸列表。重試（默認(rèn)值）重試生成錯(cuò)誤的傳輸，直到成功為止。傳輸指定一個(gè)源和一個(gè)目標(biāo)，包括一個(gè)序列號(hào)、等待指示符和更改時(shí)傳輸指示符。MVI69-AFC指定要從中讀取數(shù)據(jù)的標(biāo)記，或者指定數(shù)字或字符串文字常量。目的地指定將數(shù)據(jù)傳輸?shù)降臉?biāo)記。序列號(hào)決定傳輸?shù)膱?zhí)行順序。如果“等待”指示器處于啟用狀態(tài)，則指定傳輸列表將等待所有以前的傳輸完成后再開始此傳輸。
該區(qū)域的S7符號(hào)（IEC）為“Q”。此內(nèi)存是只讀的，用于模塊訪問。外圍輸入輸入模塊的實(shí)際物理硬件。MVI69-AFC該區(qū)域的S7符號(hào)（IEC）為“PI”。此區(qū)域是只讀的，用于模塊訪問。標(biāo)志位用于存儲(chǔ)PLC程序中計(jì)算的臨時(shí)結(jié)果的存儲(chǔ)器。該區(qū)域的S7符號(hào)（IEC）為“M”。此內(nèi)存是為模塊訪問而讀/寫的。計(jì)時(shí)器包含S7 PLC中計(jì)時(shí)器的累加器的存儲(chǔ)器。計(jì)時(shí)器的S7符號(hào)（IEC）為“T”。此內(nèi)存是只讀的，用于模塊訪問，其格式為BCD。該數(shù)字表示計(jì)時(shí)器已激活的毫秒數(shù)，最大值為3999。計(jì)數(shù)器包含S7中計(jì)數(shù)器的累加器的存儲(chǔ)器。計(jì)數(shù)器的S7符號(hào)（IEC）為“C”。此內(nèi)存是只讀的，用于模塊訪問，其格式為BCD。該數(shù)字表示計(jì)數(shù)器的累積值，因?yàn)橛?jì)數(shù)器一直處于活動(dòng)狀態(tài)，最大值為999?！?shù)描述數(shù)據(jù)塊包含S7 PLC程序信息的存儲(chǔ)器。它們可能包含以下數(shù)據(jù)類型：BOOL、BYTE、WORD、DWORD、INT、DINT、REAL、S5TIME、DATE、TIME、TIME_OF_DAY、CHAR、DATE_AND_TIME、STRING或ARRAY。S7 PLC或步驟7編程軟件文檔中應(yīng)提供這些數(shù)據(jù)類型的說明。MVI69-AFC此內(nèi)存是為模塊訪問而讀/寫的。DB編號(hào)要訪問的所需數(shù)據(jù)塊的編號(hào)。僅當(dāng)選擇的地址類型為數(shù)據(jù)塊（DB）時(shí)，此字段才有效。MVI69-AFC偏移相關(guān)的地址類型元素所需的偏移量/數(shù)量。以下是該字段對(duì)每種地址類型的含義的描述：輸入、外圍輸入和輸出輸入所需I/O模塊的插槽號(hào)。
MVI69-AFC Data Conversion During Transfers When the data type of a Source is different from the data type of the Destination, the Source is converted to the data type of the Base Data Type Conversion Rules (page 74). When you are transferring data from one array to another, the dimensions of the arrays must match in total number of elements. The members are all type-converted, if required, according to the Base Data Type Conversion Rules. PLC 5, SLC and MicroLogix Tags that specify Number of Elements greater than 1 are treated as array. If the Source and Destination are Structures (UDTs), the Source and Destination structure members are matched by name. If a Source member does not exist in the Destination, the Source member is ignored.MVI69-AFC If a Destination member does not exist in the Source, the transfer is not allowed. The Base Data Type Conversion Rules apply to the matched members,
MVI69-AFC The Wait indicator, if turned on, specifies that the Transfer List will wait for all previous transfers to complete before starting this transfer. The Transfer on Change indicator, if turned on, indicates that the transfer will occur whenever the source data changes. If the Transfer on Change option is selected, the source data has not changed since the last Transfer List execution, and the source data is less than 10 seconds old, the Transfer destination tag will not be written.MVI69-AFC This optimization can improve performance when writing to slow networks. When specifying a string constant in the Source, the string constant must begin and end with a single quote and cannot contain a single quote or double quote as part of the string to be transferred.
MVI69-AFC Certain Address Types have limited access and particular Data Types will be grayed out if not applicable to the selected Address Type. String Size The size of the string to be accessed. Enter the exact size of the string as it is defined in the S7 PLC. This is only applicable to an Address Type of STRING. A TRANSFER LIST is a list of Transfers that specify what data is to be transferred between the programmable controllers. A Transfer List contains a unique name for the Transfer List, a set of Transfers, and an On Transfer Error option. The On Transfer Error specifies how the scanner will handle a transfer. On Transfer Error includes the following error options: Parameter Description Abort Abort Transfer List on any Transfer error. Continue Abort the Transfer that generated the error, but continue Transfer List execution.MVI69-AFC Retry (default) Retry the Transfer that generated the error until it succeeds. A Transfer specifies a Source and a Destination and includes a Sequence Number, Wait indicator, and a Transfer on Change indicator.MVI69-AFC The Source specifies the Tag to read the data from or a numeric or string literal constant. The Destination specifies the Tag where the data will be transferred to. The Sequence Number determines the order of execution of the Transfers.