PC-E984-685繼電器模塊
SUB_功能塊對(duì)這兩個(gè)輸入信號(hào)。任何未使用的輸入都將設(shè)置為0.0。
所有輸入應(yīng)具有相同的工程單位。If單位不一致，可以使用SCL功能塊或另一種方法是使用內(nèi)置的第m個(gè)功能塊縮放函數(shù)。在固件1.30及更高版本中，TAN_功能塊接受弧度輸入和輸出該角度的切線。TH_功能塊可以保存一個(gè)初始值，該值將：上電時(shí)傳輸至塊輸出O1，可以：用于在輸入TC為高（1）時(shí)跟蹤電視輸入。
在1.30固件或更高版本中，保持值可以是當(dāng)TH_時(shí)，使用脈沖發(fā)生器在線改變。O1區(qū)塊輸出直接連接到ODC中的X或Y輸入塊脈沖發(fā)生器制造所使用的范圍和分辨率在線變化將由X范圍或Y確定
Range inputsTOT_功能塊接受布爾輸入，并且將保留輸入轉(zhuǎn)換的運(yùn)行總數(shù)，作為塊輸出作為與其他塊互連的實(shí)際值控制器中的塊?？梢灾刂眠\(yùn)行總數(shù)
當(dāng)輸入R變高時(shí)（1）。輸入R在在每個(gè)掃描周期讀取輸入S。
未配置的輸入將設(shè)置為0。當(dāng)EDGETRIG參數(shù)設(shè)置為1，則總數(shù)將輸入S上的每個(gè)0到1轉(zhuǎn)換的增量。當(dāng)如果EDGETRIG參數(shù)設(shè)置為0，則總數(shù)將每次1到0轉(zhuǎn)換時(shí)遞增。
在熱啟動(dòng)和熱啟動(dòng)期間，總數(shù)將保留并且在冷啟動(dòng)時(shí)將被初始化為0.0。TSW_功能塊選擇兩個(gè)模擬輸入中的一個(gè)信號(hào)作為輸出信號(hào)。輸入A變成輸出當(dāng)輸入SC為低（0）時(shí)，輸入B將為輸出當(dāng)輸入SC變高時(shí)（1）。
未配置的輸入將默認(rèn)為SC=low（0）、A=0.0，B=100.0。XOR_功能塊執(zhí)行邏輯異或
在所有三個(gè)輸入上運(yùn)行。未使用的輸入將導(dǎo)致塊用作雙輸入XOR。異或輸出
當(dāng)所有配置輸入均為低（0）時(shí)，將為低電平（0），或當(dāng)所有配置的輸入為高（1）時(shí)。4.0工廠配置選項(xiàng)
工廠配置的選項(xiàng)提供了一種簡(jiǎn)單的方式來(lái)配置352Plus、353或354型如果工廠配置選項(xiàng)（FCO）將提供一個(gè)完整的、功能齊全的回路控制器，只要輸入/輸出正確進(jìn)行連接?？梢詫?duì)FCO進(jìn)行更改，以滿足個(gè)別要求。上的FCO列表以下頁(yè)面記錄了與第3節(jié)中列出的默認(rèn)值不同的參數(shù)。
SUB_ function blocks perform arithmetic subtraction on
the two input signals. Any unused input will be set to 0.0.
All inputs should have the same engineering units. If units
are not consistent, a SCL function block can be used or an
alternative is to use a MTH function block that has built-in
scaling functions. TAN__ function blocks, in firmware 1.30 and higher, accept a
radian input and output the tangent of that angle. TH_ function blocks can hold an initial value that will
transfer to the block output O1 on power up and it can be
used to track the TV input when input TC is high (1).
In 1.30 firmware or greater, the HOLD value can be
changed on line, using the pulser, when the TH_.O1 block
output is directly connected to X or Y inputs in an ODC
block. The range and resolution used by the pulser making
on line changes will be determined by the X Range or Y
Range inputsTOT_ function blocks accept a Boolean input and they
will retain a running total of the input transitions as the
block output as a real value for interconnection to other
blocks in the controller. The running total can be reset
when input R goes high (1). Input R is executed prior to
reading input S on each scan cycle.
Unconfigured inputs will be set to 0. When the
EDGETRIG parameter is set to 1, the total will
increment on each 0 to 1 transition on input S. When
the EDGETRIG parameter is set to 0, the total will
increment on each 1 to 0 transition.
The total will be retained during a WARM & HOT start
and will be initialized to 0.0 on a COLD start. TSW_ function blocks select one of two analog input
signals as the output signal. Input A becomes the output
when input SC is low (0) and input B will be the output
when input SC goes high (1).
Unconfigured inputs will default to SC=low(0), A=0.0,
B=100.0. XOR_ function blocks perform a logical exclusive OR
function on all three inputs. An unused input will cause the
block to function as a two input XOR. The XOR output
will be low (0) when all configured inputs are low (0) or
when all configured inputs are high (1). 4.0 FACTORY CONFIGURED OPTIONS
Factory Configured Options provide an easy way to configure a Model 352Plus, Model 353, or Model 354. In most
cases a Factory Configured Option (FCO) will provide a complete, functional loop controller, once the proper I/O
connections are made. Changes can be made to an FCO to meet individual requirements. The FCO listings on the
following pages document the parameters that are different than the default values listed in section 3.
