DTCC901B輸入接線卡件
當循環(huán)事件激活時，輸出LE為高（1）。輸出SE為站錯誤激活時為高。6.循環(huán)#（在版本1.21固件中，此參數(shù)為MB索引，但它們具有相同的功能）。它將用于索引Modbus參數(shù)的讀取和寫入。LIL有25個參數(shù)：C1S、C2S、C3S、。。。。。C25S。當已選擇ODS塊且已配置循環(huán)#時，相應(yīng)的C#S LIL參數(shù)將包含LIL起始通道（n）位置。必須輸入循環(huán)#才能啟用LIL或Modbus通信。
必須配置操作員顯示器，以便將站環(huán)路數(shù)據(jù)正確映射到網(wǎng)絡(luò)數(shù)據(jù)。定序器回路當使用標準Modbus接口時，網(wǎng)絡(luò)數(shù)據(jù)映射到寄存器或線圈上，并添加可選LIL接口時的通道/參數(shù)。列出了Modbus和LIL的映射在“網(wǎng)絡(luò)通信”部分的表格中。
輸入CL控制對來自網(wǎng)絡(luò)的環(huán)路數(shù)據(jù)的更改的本地仲裁。
當未配置輸入CL時三個狀態(tài)輸出LO（在1.21固件中，此輸出命名為L）、CN和CM將設(shè)置為高（1）并更改可以通過網(wǎng)絡(luò)命令或本地面板進行。配置CL時，可以在本地切換從按鈕開關(guān)，如PB1SW（輸出PS），將從本地切換到控制臺或從每次切換輸入時，控制臺/計算機切換到本地。此外，當輸出LO變高時，輸出CN也將變高high和CM將變?yōu)閘ow，表明無論何時本地被禁用，控制源都將變?yōu)镃onsole，通過切換輸入CL或從網(wǎng)絡(luò)命令。可以使用網(wǎng)絡(luò)將計算機CM狀態(tài)設(shè)置為高命令NL輸出通常連接到按鈕塊PB1SW的MD輸入，以指示：操作員面板上的C/L開關(guān)位置，綠色LED表示C，紅色LED表示LO。當工作站未能在看門狗內(nèi)接收到Modbus網(wǎng)絡(luò)命令時，輸出WD將變高（1）時期看門狗時間在STATN（站參數(shù)）功能塊中設(shè)置。開/關(guān)是一個具有偏差功能的開/關(guān)控制器。它是五種控制器類型之一，可用于一個循環(huán)基礎(chǔ)。當P-S（過程-設(shè)定點）達到HDEV極限時布爾輸出HO將變高（1），當S-P（設(shè)定點
過程）達到LDEV極限時，輸出LO將消失高（1）。當偏差降至小于死區(qū)設(shè)置，輸出將變低（0）。
當TD參數(shù)不是0.0。當需要單端動作（間隙動作）時，設(shè)置死區(qū)等于間隙和HDEV參數(shù)
一半的差距。例如，如果死區(qū)=20.0，則設(shè)置HDEV至10。如果設(shè)定點S為50.0，輸出HO將消失當P等于60.0時為高（1），當P等于0時為低（0）等于40.0。
Output LE is high (1) when a loop event is active. Output SE is
high when a station error is active.
6. The LOOP # (in version 1.21 firmware this parameter was MB INDEX but they have the same function). It
will be used to index reads and writes to Modbus parameters. The LIL has 25 parameters: C1S, C2S, C3S, .....
C25S. When an ODS block has been selected and the LOOP # has been configured, the corresponding C#S LIL parameter will contain the LIL starting Chan (n) location. . The LOOP# must be entered to enable either
LIL or Modbus communications.
An operator display must be configured in order to properly map station loop data to network data. Sequencer loop
network data is mapped onto registers or coils when the standard Modbus interface is used and to
channels/parameters when the optional LIL interface has been added. Mappings for both Modbus and LIL are listed
in tables in the ‘Network Communications’ section.
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 toggled locally
from a pushbutton switch, such as PB1SW (output PS), and will change from local to console or from
console/computer to local each time the input is toggled. 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 toggling 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 the pushbutton block PB1SW to indicate
the C/L switch position on the operator faceplate using the green LED for C and the red LED for LO.
Output WD will go high (1) when the station fails to receive a Modbus network command within the watchdog
period. The watchdog time is set in the STATN (Station Parameters) function block. ON/OFF is an on/off controller with deviation function. It
is one of five controller types that can be used on a one per
loop basis.
When P-S (Process - Setpoint) reaches the HDEV limit, the
Boolean output HO will go high (1) and when S-P (Setpoint
- Process) reaches the LDEV limit, the output LO will go
high (1). When the deviation drops to less than the
DEADBAND setting, the outputs will go low (0).
Derivative action is added to the process variable when the
TD parameter is other than 0.0.
When single ended action (gap action) is desired, set the
DEADBAND equal to the gap and the HDEV parameter for
half the gap. For example, if DEADBAND = 20.0, set
HDEV to 10. If the setpoint S is 50.0, output HO will go
high (1) when P equals 60.0 and HO will go low (0) when P
equals 40.0.
