3BSE018298R1信號輸出卡件
TVAs的CPU輸入掃描：CPU將輸入數(shù)據(jù)從FBC到PLC參考表的雙端口存儲器。時間長度取決于要掃描的I/O數(shù)據(jù)量。應(yīng)用程序的CPU邏輯執(zhí)行：執(zhí)行用戶所需的時間應(yīng)用程序。該時間取決于邏輯量以及PLC CPU中其他非搶占操作的需求和優(yōu)先級，如另一次I/O掃描和通信窗口時間。
TVAs的CPU輸出掃描：CPU傳輸輸出數(shù)據(jù)所需的時間
從PLC參考表到FBC的雙端口存儲器。時間長度取決于要掃描的I/O數(shù)據(jù)量。
配置同步I/O掃描
要設(shè)置同步I/O掃描：
1.在網(wǎng)絡(luò)配置工具中，指定FIP的網(wǎng)絡(luò)訪問方法總線控制器為同步（/時隙）。
2.將CPU掃描模式配置為微循環(huán)模式。
配置微循環(huán)的周期。微循環(huán)周期的典型值為：
等于PLC中設(shè)置的最快同步掃描周期。4.使用硬件配置工具從PLC定義同步掃描集CPU掃描設(shè)置選項卡。
–將FIP總線控制器的物理位置（機架/插槽）標(biāo)識為同步來源
5.從FIP總線控制器的掃描選項卡，將所需時隙連接到同步掃描集。
與時隙關(guān)聯(lián)時，時隙的周期必須相同同步掃描集。此外，還可以附加來自其他FIP的時隙
總線控制器到同一同步時隙。但只能有一個FBC
配置為同步源。也可以將本地PLC I/O數(shù)據(jù)連接到同步掃描集。
如果要同步輸入和輸出，請指定默認(rèn)時間
時隙DI和DO與一個同步掃描集，時隙AI和AO與另一個同步掃描集。
如果只想與輸入同步，則將DI分配給同步掃描集，將AI分配給另一個同步
CPU Input Scan of TVAs: The time necessary for the CPU to transfer the input data from
the dual–port memory of the FBC to the PLC reference tables. The length of time de- pends on the amount of I/O data to be scanned.
CPU Logic Execution of Application Program: The time necessary to execute the user
application program. This time depends on the amount of logic and the needs and priorities of other non–preemptive operations in the PLC CPU, such as another I/O scan and
the communications window time.
CPU Output Scan of TVAs: The time necessary for the CPU to transfer the output data
from the PLC reference tables to the dual–port memory of the FBC. The length of time
depends on the amount of I/O data to be scanned.
Configuring Synchronous I/O Scanning
To set up Synchronous I/O Scanning:
1. In the Network Configuration tool specify the Network Access method for the FIP
Bus Controller as Synchronous (/time slot).
2. Configure the CPU sweep mode as MICROCYCLE mode.
3. Configure a period for the microcycle. A typical value for the microcycle period is
equal to the period of the fastest synchronous scan set in the PLC.
4. Define a synchronous scan set using the Hardware Configuration tool, from the PLC
CPU Scan Set tab.
– Identify the physical location (rack/slot) of the FIP Bus Controller as the Sync
Source.
5. From the Scanning tab for the FIP Bus Controller, attach the desired time slot(s) to
the Synchronous Scan Set.
The periods of the time slots must be identical when associating to the same
synchronous scan set. In addition, it is possible to attach time slots from other FIP
Bus Controllers to the same synchronous time slot. But only one FBC can be
configured as the Sync Source. It is also possible to attach local PLC I/O data to a
synchronous scan set.
If you want to synchronize both the inputs and the outputs, assign the default time
slots DI and DO to one sync scan set and the time slots AI and AO to another sync
scan set.
If you want to synchronize to inputs only, assign DI to a sync scan set and AI to
another sync
