P0917GZ冗余8通道卡件
記錄到ESL功能塊的事件可在以下位置查看：通過按下確認(rèn)按鈕，操作員面板
顯示包含ESL函數(shù)的循環(huán)時已記錄事件的塊。字母數(shù)字顯示器
這將是通過任何活動報警、狀態(tài)和條件的第一步或錯誤，然后是此后發(fā)生的所有記錄事件上次復(fù)位。配置的8字符名稱將為：顯示在字母數(shù)字顯示中，順序為：出現(xiàn)（ESL-1、ESL-2…）將出現(xiàn)在數(shù)字
單步執(zhí)行事件日志時顯示。其他活動例如警報、狀態(tài)條件或錯誤可以類似如果記錄到ESL功能塊，則查看。EXP_功能塊在固件1.30及更高版本中執(zhí)行自然指數(shù)函數(shù)，以“e”為基數(shù)。輸出將是值“e”提高到輸入X的冪。固件1.30及更高版本中的EXT_功能塊將提供一個等于Y輸入的輸出，被提升到X輸入的冪。輸入Y的所有負(fù)值將被視為0.0Y為0.0，X為負(fù)，輸出將設(shè)置為最大值編號（即1.17…e38）。
FTG_功能塊為一個每次輸入P從高電平
（1）轉(zhuǎn)換時的掃描周期輸入到低（0）輸入。GB_功能塊提供動作、增益和偏置
對輸入信號A的調(diào)整。盡管該塊可以提供信號縮放，如果需要，不應(yīng)將其用作范圍指針的引用。SCL功能塊當(dāng)為此目的需要縮放時，應(yīng)使用。HLD_功能塊提供的輸出等于在配置中保持VAL設(shè)置，以便與其他功能塊。ID是一個純積分控制器和五個控制器之一可以在每個循環(huán)一個的基礎(chǔ)上使用的類型。它使用以提供積分動作，
允許與其他功能塊或外部進(jìn)行交互裝置，如氣動控制器和切斷裝置切換，同時消除可能發(fā)生的故障其他控制器類型。在下列情況下提供衍生訴訟：參數(shù)TD為非零。
當(dāng)輸入A為高（1）時，控制器將在正常自動模式，當(dāng)?shù)停?）時，將導(dǎo)致輸出以跟蹤反饋信號。這將使控制器輸出跟蹤限制。當(dāng)控制器切換回自動時如果GE為非零，則滯后（GE+FB）輸入處的值將導(dǎo)致輸出積分到TI時間常數(shù)。進(jìn)程范圍指針參數(shù)指向函數(shù)具有范圍縮放的塊，如模擬輸入提供過程變量信號。這使控制器，用于歸一化范圍的調(diào)諧參數(shù)過程輸入。如果未配置此參數(shù)，控制器將使用0.00-100.00的范圍縮放。通電-在熱啟動或冷啟動期間，輸出將初始化為MINSCALE參數(shù)的值并且所有動態(tài)狀態(tài)將在第一掃描周期被初始化為它們的當(dāng)前輸入值。
Events logged to the ESL function block can be viewed at
the operator faceplate by pressing the ACK pushbutton
when displaying the loop containing an ESL function
block having logged events. The alphanumeric display
will first step through any active alarms, status conditions
or errors and then all the logged events that occurred since
the last reset. The configured 8-character name will be
shown in the alphanumeric display and the order of
occurrence (ESL-1, ESL-2...) will appear in the numeric
display when stepping through the event log. Other events
such as alarms, status conditions, or errors can be similarly
viewed if logged to the ESL function block. EXP_ function blocks, in firmware 1.30 and higher, perform the
natural exponentiation function, base “e”. The output will be the
value “e” raised to the power of input X. EXT_ function blocks, in firmware 1.30 and higher, will provide
an output that equals the Y input raised to the power of X input.
All negative values of input Y will be treated as 0.0. When input
Y is 0.0 and X is negative, the output will be set to the maximum
number (i.e. 1.17...e38). FTG_ function blocks provide a high (1) output for one
scan cycle each time input P transitions from a high (1)
input to a low (0) input. GB_ function blocks provide action, gain, and bias
adjustments to input signal A. Although this block can
provide signal scaling, it should not be used if needed as a
reference for a range pointer. The SCL function block
should be used when scaling is required for this purpose.
HLD_ function blocks provide an output equal to the
HOLD VAL set in configuration for interconnection to
other function blocks. ID is an integral only controller and one of five controller
types that can be used on a one per loop basis. It uses
external feedback to provide integral action and, therefore,
allows interaction with other function blocks or external
devices, such as pneumatic controllers and shutoff
switches while eliminating windup that can occur with
other controller types. Derivative action is provided when
the parameter TD is non-zero.
When input A is high (1) the controller will operate in the
normal auto mode and when low (0) will cause the output
of the lag function to track the feedback signal. This will
cause the controller output to track the feedback within the
limits. When the controller is switched back to auto, the
value at the input of the lag (GE+FB), if the GE is nonzero, will cause the output to integrate to a new output at
the TI time constant.
The process range pointer parameter points to a function
block that has range scaling, such as the analog input that
is providing the process variable signal. This enables the
controller to normalize the tuning parameters for the range
of the process input. If this parameter is not configured, the controller will use a range scaling of 0.00 - 100.00.
POWER UP - During a warm or cold start, the output will be initialized to the value of the MINSCALE parameter
and all dynamic states will be initialized to their current input value on the first scan cycle.
