AO845A-eA輸入模塊,3BSE045584R2中文說明
MODBUS RTU地址與GForce-200的地址對應(yīng)關(guān)系 MODBUS地址總是以00001、30004之類的形式出現(xiàn)。GForce-200內(nèi)部的數(shù)據(jù)存儲區(qū)與MODBUS的0、1、3、4共4類地址的對應(yīng)關(guān)系如附表所示: 附表 MODBUS地址對應(yīng)表說明:其中T為GForce-200中的緩沖區(qū)起始地址，即HoldStart。如果已知GForce-200中的V存儲區(qū)地址，推算MODBUS地址的公式如下: MODBUS地址=40000+(T/2+1) 其中T為偶數(shù)。
AO845A-eA輸入模塊,3BSE045584R2中文說明5 結(jié)束語 Modbus RTU作為一種工業(yè)控制器的網(wǎng)絡(luò)通訊協(xié)議，其在如今眾多的控制器之間進(jìn)行聯(lián)網(wǎng)、監(jiān)控、相互通訊等方面發(fā)揮著重大作用，本文以典型的GForce-200控制系統(tǒng)為例，詳述了如何應(yīng)用Modbus RTU通訊協(xié)議以及檢測方法，使得控制器之間的通訊變得更加簡易和清晰。 系統(tǒng)組成
2.1 TDAM系列數(shù)據(jù)采集終端
TDAM7018模塊包括8個輸入通道,CPU采用ARM 32位處理器，AD采用24bit實現(xiàn)模擬數(shù)字轉(zhuǎn)換，運算能力強(qiáng)大， RMS 噪聲為5 μV ,零點偏移小于20 μV。每個數(shù)據(jù)采集器在板上帶有一個穩(wěn)定的參考電壓,采用多重積分算法確保在任何環(huán)境下不需額外考慮就可得到精確測量
2.1 通信隔離模塊
隔離器用來將數(shù)據(jù)采集器的數(shù)據(jù)電纜通過串行口接入PC主機(jī),即將數(shù)據(jù)采集器的RS485信號轉(zhuǎn)換PC主機(jī)所需的RS232信號,隔離器也將系統(tǒng)與主計算機(jī)進(jìn)行了電隔離。
2.3高精度溫度傳感器
a) 0-1200℃部分采用鎧裝型K型熱電偶探頭，實現(xiàn)防腐 防酸堿性；延長線采用臺灣進(jìn)口耐高溫不銹鋼網(wǎng)線，實現(xiàn)信號的長距離傳輸。固態(tài)硬盤,寬溫硬盤,高速硬盤,電子硬盤,數(shù)據(jù)存儲卡,工業(yè)SSD固態(tài)硬盤1、HDD Hard Disk Drive的縮寫，即硬盤驅(qū)動器的英文名。最基本的電腦存儲器，我們電腦中常說的電腦硬盤[C盤、D盤為磁盤邏輯分區(qū)]都在硬盤驅(qū)動器中。硬盤一般常見的磁盤容量為40G、80G、120G、160G等等，目前最高的桌面級硬盤為2TB。硬盤按體積大小可分為3.5寸、2.5寸、1.8寸等，按接口可分為PATA、SATA、SCSI等，PATA、SATA一般為桌面級應(yīng)用，容量大，價格相對較低，適合家用；
curve recording of programming software, and third-party general wave recording software. Variable recording of HMI Software (also referred to as SCADA software) is to add all variables to be recorded in HMI and set them to continuous recording, and then use waveform viewing control to playback waveform. This method is extremely inconvenient for temporary fault detection, because it is necessary to stop the HMI screen for screen development, and then run it again. The workload is not small, and it affects the use of operators. In addition, the variable refresh speed of HMI is generally low, such as 0.5s refresh cycle, and the program execution cycle of PLC is generally within 100ms. Therefore, many details will be omitted.
Not many PLC programming software can record curves, and it is not easy to operate. For example, STEP7 cannot record the curve. Botu has the track function (limited to s7-1200, s7-1500, etc.), but its essence is to record in PLC and then upload the display. The advantage: it can realize the recording of each cycle.
