ACROMAG 651T-0600控制設(shè)備
通信部分。“LOOP#”和“LIL CHAN”參數(shù)允許配置循環(huán)索引
Modbus數(shù)據(jù)的編號(hào)（x）或LIL回路數(shù)據(jù)的起始信道（n）。
輸入CL控制對(duì)來(lái)自網(wǎng)絡(luò)的環(huán)路數(shù)據(jù)的更改的本地仲裁。當(dāng)未配置輸入CL時(shí)三個(gè)狀態(tài)輸出LO（在1.21固件中，此輸出命名為L(zhǎng)）、CN和CM將設(shè)置為高（1）并更改可以通過(guò)網(wǎng)絡(luò)命令或本地面板進(jìn)行。配置CL時(shí)，可以在本地進(jìn)行更改從按鈕開(kāi)關(guān)，如PB1SW輸出PS（配置為瞬時(shí)），并將從本地變?yōu)榭刂婆_(tái)或控制臺(tái)/計(jì)算機(jī)到本地，輸入的每個(gè)正向轉(zhuǎn)換。當(dāng)輸出LO變高時(shí)，輸出CN也將變高，CM將變低，表明控制源將變?yōu)榭刂婆_(tái)
無(wú)論何時(shí)通過(guò)輸入CL上的正轉(zhuǎn)換或從網(wǎng)絡(luò)命令禁用本地。計(jì)算機(jī)可以使用網(wǎng)絡(luò)命令將CM狀態(tài)設(shè)置為高。NL輸出通常連接到的MD輸入按鈕塊PB1SW用于指示操作員面板上的C/L開(kāi)關(guān)位置，C為綠色LED，紅色為紅色
LO的LED。當(dāng)控制器未能在看門(mén)狗內(nèi)接收到Modbus網(wǎng)絡(luò)命令時(shí)，輸出WD將變高（1）
時(shí)間看門(mén)狗時(shí)間在STATN（站參數(shù)）功能塊中設(shè)置
。輸入A可用于：確認(rèn)控制器中所有回路中的所有報(bào)警。輸出PN（脈沖開(kāi)啟）將變高0.5秒（或一個(gè)掃描周期，以較長(zhǎng)者為準(zhǔn)）。條形圖閃爍由優(yōu)先級(jí)控制
報(bào)警或事件的設(shè)置。閃爍條形圖停止時(shí)，輸出PF（脈沖關(guān)閉）將變高0.5秒（例如，按下確認(rèn)按鈕）。奇數(shù)功能塊是五個(gè)操作員顯示器之一，其：可在每個(gè)循環(huán)一次的基礎(chǔ)上用于配置本地操作員顯示功能以及網(wǎng)絡(luò)參數(shù)。請(qǐng)參閱下一頁(yè)的i|ware PC面板示例。奇數(shù)功能塊最多顯示16個(gè)離散變量。每個(gè)輸入具有相應(yīng)的塊輸出，該塊輸出：等于變量模式為自動(dòng)時(shí)的輸入。每個(gè)輸入變量可以分配一個(gè)模式。價(jià)值在人身上，可以使用脈沖發(fā)生器改變輸出并按下確認(rèn)按鈕。切換變量時(shí)對(duì)于手動(dòng)，它將始終等于輸入值，直到更改。LOOP#參數(shù)用于索引對(duì)的讀寫(xiě)Modbus和LIL網(wǎng)絡(luò)參數(shù)。當(dāng)使用LIL時(shí)，還必須配置LIL CHAN參數(shù)?？匆?jiàn)有關(guān)網(wǎng)絡(luò)參數(shù)的更多信息，請(qǐng)參見(jiàn)第6節(jié)。視圖OD參數(shù)設(shè)置為“是”時(shí)，啟用操作員顯示可在本地查看和訪(fǎng)問(wèn)。在案例中其中需要查看顯示或操作參數(shù)僅來(lái)自網(wǎng)絡(luò)工作站，參數(shù)應(yīng)為設(shè)置為NO。
Communications’ section. The ‘LOOP #’ and ‘LIL CHAN’ parameters enable configuration of a loop index
number (x) for Modbus data or a starting channel (n) for LIL loop data.
Input CL controls local arbitration of changes to loop data from the network. When input CL is not configured, the
three status outputs LO (in 1.21 firmware this output was named L), CN, and CM will be set high (1) and changes
can be made from a network command or the local faceplate. When CL is configured, it can be changed locally
from a pushbutton switch such as PB1SW output PS (configured as momentary) and will change from local to
console or console/computer to local with each positive transition of the input. Also, when output LO goes high,
output CN will also go high and CM will go low, indicating that the control source will change to Console
whenever Local is disabled, either by a positive transition on input CL or from a network command. The Computer
CM state can be set high using a network command. The NL output will normally be connected to the MD input of
pushbutton block PB1SW to indicate the C/L switch position on the operator faceplate, a green LED for C and a red
LED for LO.
Output WD will go high (1) when the controller fails to receive a Modbus network command within the watchdog
time. The watchdog time is set in the STATN (Station Parameters) function block. Input A can be used to
acknowledge all the alarms in all of the loops in a controller. Output PN (Pulse oN) will go high for 0.5 seconds (or
one scan cycle whichever is longer) whenever the bargraph flashes. Bargraph flashing is controlled by the priority
setting of alarms or events. Output PF (Pulse ofF) will go high for 0.5 sec when the flashing bargraph is stopped
(e.g. pressing the ACK button). ODD function blocks are one of five operator displays that
can be used on a one per loop basis to configure the local
operator display functions as well as network parameters.
See the i|ware PC faceplate example on the next page.
The ODD function block displays up to 16 discrete
variables. Each input has a corresponding block output that
is equal to the input when the variable mode is in Auto.
Each input variable can be assigned a mode. The value of
the output can be changed while in Man by using the pulser
and pressing the ACK button. When a variable is switched
to Manual it will always equal the input value until changed.
The LOOP # parameter is used to index reads and writes to
Modbus and LIL network parameters. When using the LIL,
the LIL CHAN parameter must also be configured. See
Section 6 for more information on network parameters.
The VIEW OD parameter, when set to YES enables the
operator display to be viewed and accessed locally. In cases
where it is desired to view display or operation parameters
only from a network workstation, the parameter should be
set to NO.
