NI PXI-6259多功能采集卡
1.產(chǎn) 品 介 紹
品牌：NI
型號(hào)說(shuō)明：NI PXI-6259多功能采集卡
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2.產(chǎn) 品 詳 情 資 料：
NI PXI-6259必須將適當(dāng)?shù)慕K端電阻器連接到總線的始端和末端。表142列出了每種類型電纜的特性阻抗。如果CI862位于總線兩端，則通過(guò)現(xiàn)場(chǎng)總線接口模塊上的開(kāi)關(guān)設(shè)置特性電阻，見(jiàn)表17。如果TRIO模塊位于總線的起點(diǎn)或終點(diǎn)，則可以使用電阻器或端接電阻插頭（6202FP00150（150 W）或6202FP00075（75 W））端接總線。BSM短截線不應(yīng)端接。從正面看時(shí)，雙列直插開(kāi)關(guān)位于外殼底部。開(kāi)關(guān)1朝向外殼頂部。安裝Satt I/O單元和NI PXI-6259由處理器單元通過(guò)CEX總線供電，不需要額外的外部電源。NI PXI-6259沒(méi)有為現(xiàn)場(chǎng)設(shè)備供電。使用以下步驟將ControlNet連接到I/O系統(tǒng)和CI865模塊的BNC連接器。有關(guān)更多信息，請(qǐng)參閱AC 800M的Satt I/O接口（3BSE042821*）。BNC連接器位于：?機(jī)架I/O-200-RACN模塊后部。?200系列I/O-位于200-ACN模塊的前部。?CI865-位于NI PXI-6259模塊的前部NI PXI-6259
The appropriate terminating resistor must be attached to both the beginning and end of the bus. The characteristic impedance for each type of cable is listed in Table 142. If theNI PXI-6259is at either end of the bus, the characteristic resistance is set by a switch on the Field Bus Interface Module, Table 17. If a TRIO module is at the beginning or end of the bus, the bus can be terminated with a resistor or a terminating resistance plug, 6202FP00150 for 150 W or 6202FP00075 for 75 W. BSM stubs should not be terminated.the dip switch is located on the bottom of the housing when looking from the front. Switch 1 is towards the top of the housing.Installing the Satt I/O Units and CI865 Module The NI PXI-6259is powered from the processor unit via the CEX-Bus and requires no additional external power source. No field device is powered from the NI PXI-6259. Use the following procedure to connect the ControlNet to the BNC connector of the I/O systems and the NI PXI-6259 module. For more information see Satt I/O Interface for AC 800M (3BSE042821*). The BNC connector is located: ? Rack I/O - at the rear of the 200-RACN module. ? Series 200 I/O - at the front of the 200-ACN module. ? CI865 - at the front of the CI865 module
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