HITACHI LCE250A數(shù)字量輸入卡件
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FF H1總線允許重新使用現(xiàn)有的4-20 mA模擬信號(hào)布線。這意味著電纜往往成為主要的尺寸因素。FF配置工具可以直接連接到FF H1總線。HITACHI LCE250A已被CI860通信接口（以及LD800HSE鏈接設(shè)備）所取代。HITACHI LCE250A僅出于遺留原因進(jìn)行描述。指示器HITACHI LCE250A基金會(huì)現(xiàn)場(chǎng)總線H1接口具有以下LED指示器。技術(shù)數(shù)據(jù)表78。HITACHI LCE250A基金會(huì)現(xiàn)場(chǎng)總線H1–檢測(cè)到LED指示指示/顏色功能F（故障）/紅色單元錯(cuò)誤。由控制軟件控制。在控制器重置期間由硬件設(shè)置并清除。R（un）/綠色運(yùn)行。由控制軟件控制。在控制器重置過(guò)程中被硬件清除。Rx/Tx/黃色傳輸?shù)窖b置或從裝置傳輸。表79。HITACHI LCE250A基金會(huì)現(xiàn)場(chǎng)總線H1接口規(guī)范項(xiàng)目描述類型-基金會(huì)現(xiàn)場(chǎng)現(xiàn)場(chǎng)總線H1主控和鏈接時(shí)間表。-注意，完整的控制器具有基金會(huì)現(xiàn)場(chǎng)總線連接設(shè)備所需的硬件功能。通道數(shù)量單通道基金會(huì)現(xiàn)場(chǎng)總線H1（31.25 kbit/s）。協(xié)議基金會(huì)現(xiàn)場(chǎng)總線H1通過(guò)HITACHI LCE250A上的端口。通信速度31.25 kbit/s（FF H1）允許節(jié)點(diǎn)地址20–247通過(guò)變壓器進(jìn)行電流隔離。
The FF H1 bus allows reuse of existing cabling for 4-20 mA analog signals. This means the cables often become the dominant dimensioning factor. An FF configuration tool can be connected directly to the FF H1 bus. HITACHI LCE250A has been replaced by the CI860 communication interface (together with the LD800HSE linking device). CHITACHI LCE250Ais only described for legacy reasons.Indicators The CHITACHI LCE250AFOUNDATION Fieldbus H1 interface has the following LED indicators. Technical Data Table 78. CHITACHI LCE250AFOUNDATION Fieldbus H1 – LED Indications Indication/Color Function F(ault) /Red Unit error detected. Controlled by Control Software. Set and cleared by the Hardware during controller Reset. R(un) /Green Operating. Controlled by the Control Software. Cleared by the Hardware during controller Reset. Rx/Tx /Yellow Transmission to or from the unit. Table 79. CHITACHI LCE250AFOUNDATION Fieldbus H1 Interface Specifications Item Description Type – FOUNDATION Fieldbus H1 master and link schedule. – Note the complete controller has a HW capability necessary for a FOUNDATION Fieldbus linking device. Number of channels Single channel FOUNDATION Fieldbus H1 (31.25 kbit/s). Protocols FOUNDATION Fieldbus H1 via port on CHITACHI LCE250A Communication speed 31.25 kbit/s (FF H1) Allowed node address 20 – 247 Galvanic isolation By means of transformer.
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